Term
What stimulates spermatogensis? |
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Definition
androgen-binding proteins and testosterone
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Term
Where are Sertoli Cells located and what do they secrete? |
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Definition
Located in the seminiferous tubules (in the testes) and they secrete androgin-binding proteins (triggered by FSH) |
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Term
What do Cowper's glands do? |
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Definition
During sexual arousal, they secrete an alkaline fluid into the urethra that protect sperm |
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Term
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Definition
Most female eggs go through this degenerative process (they die off by adolescence) |
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Term
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Definition
Primary oocyte surrounded by a single layer of flat follicular cells |
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Term
graafian (Mature) follicle
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Definition
primary follicle -> secondary follicle -> graafian follicle
Primary oocyte completes meiosis I producing the first polar body and secondary oocyte in this follicle. The mature follicle will release the secondary oocyte eventually resulting in ovulation |
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Term
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Definition
what the mature follicle becomes after expelling the secondary oocyte
produced progesterone, estrogen, relaxin and inhibin until it becomes corpus albican |
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Term
What happens when a secondary oocyte is fertilized? |
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Definition
Meiosis II resumes, and the oocyte splits into an ovum (mature egg) and a second polar body |
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Term
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Definition
a diploid zygote is formed when the nuclei of a sperm cell and ovum unite |
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Term
What are teh steps in oogenesis? |
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Definition
start with oogonium; becomes primary oocyte; splits into first polar body and secondary oocyte; the secondary oocyte goes through ovulation; if it is fertilized, an ovum and second polar body are created; the ovum and sperm nuclei form a zygote |
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Term
What does FSH stimulate in females? |
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Definition
it stimulates the primary follicle to occur from a primary oocyte |
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Term
What is the function of inhibin and where is it excreted from? |
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Definition
secreted bu follicles and it inhibits FSH (because you only need one primary follicle at a time) |
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Term
What does LH (lutinizing hormone) do in females |
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Definition
stilulates the corpus luteum to release hormones (estrogen, progesterone, relaxin) |
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Term
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Definition
what the corpus luteum becomes after fertilization has not occured (stops secreting estrogen and progesterone etc) |
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Term
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Definition
Human Chroionic Gonadatropin- zygote will immediately begin releasing this
stimulates corpus luteum to continue secreting estrogen and progesterone
function is to maintain the zygote and uterus for 8-9 weeks |
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Term
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Definition
doesn't allow mother and fetal blood to mix; tree-like structures that bring nutrients to the fetus |
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Term
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Definition
Juxtaglomerular Cells (afferent arteriole) and Macula Densa (Loop of Henle) |
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Term
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Definition
Releases renin into the blood
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Term
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Definition
activates angiotensinogen to turn into angiotensis I which will then target ACE to stimulate it to form angiotensin II |
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Term
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Definition
powerful vasoconstrictor
also stimulates the adrenal cortex to release Aldosterone (adresses LBP problems) |
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Term
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Definition
causes kidneys to retain water by attaching to principal cells in the Distal Convoluted tubules (DCT) triggering them to retain sodium which makes the water follow (Increases Blood Pressure) |
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Term
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Definition
Antidiuretic Hormone- released from posterior pituitary gland in response to low blood pressure (stimulate aquapores to allow water to run through cells and out of the filtrate)
inhibitted by caffiene and alcohol |
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Term
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Definition
Atrial Natriuretic Peptide- a response to high blood pressure by sending sodium out into the urine where water will follow |
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Term
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Definition
NFP=GBHP-CHP-BCOP
GBHP-Glomerular blood hydrostatic pressure (BP in glomerular capillaries)
CHP- Capsular Hydrostatic Pressure (pressure exerted against filtration membrane by fluid in the capsular space and renal tubule)
BCOP-Blood colloid osmotic pressure (due to presence of proteins) |
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Term
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Definition
maintains a steady flow of blood into the glomerulus (localized response not intended for long term) |
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Term
What type of special cells are located in the bladder and ureter |
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Definition
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Term
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Definition
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Term
Electrolytes and 4 functions |
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Definition
inorganic compounds that dissolve into ions
1 conducts osmosis between body compartments
2 maintain acid-base balance
3 create electrical currents
4 cofactors for enzymes |
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Term
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Definition
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Term
What 3 processes does the body have to attempt to maintain the pH level?
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Definition
1 Buffer System
2 Lungs exhaling CO2
3 Intercollated cells in the kidneys release hydrogen molecules into the urine as needed |
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Term
3 Principle Buffer Systems |
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Definition
Carbonic Acid-Bicarbonate
Protein Buffer System (cytosol and Plasma)
Phosphate Buffer System (cytosol) |
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Term
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Definition
when the body cannot protect itself and it becomes acidic
CNS is depressed |
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Term
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Definition
When body cannot protect itself and it becomes alkaline (basic)
CNS is overstimulated |
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Term
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Definition
too much CO2 (interference of gas exchange) |
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Term
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Definition
Arterial blood pressure of CO2 is too low (hyperventilating or getting rid of too much CO2) |
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Term
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Definition
blood bicarbonate concentration is too low (not enough hydrogen secreted by kidneys) |
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Term
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Definition
blood bicarbonate levels are too high; body is losing too much acid (excessive vomitting or diarrhea) NON respiratory loss of acid |
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Term
where are the adrenal glands located? |
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Definition
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Term
What 3 hormones do the adrenal cortex secrete? |
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Definition
mineralocorticoids- affect mineral homeostasis (aldosterone)
glucocorticoids-affect glucose homesostasis
androgens- synthesizing steroid hormones that have masculinizing effects (gonadicorticoids) |
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Term
The adrenal medulla is made up of what kind of tissue? |
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Definition
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Term
What are the two major hormones excreted from the adrenal medulla? |
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Definition
epinephrine and norepinehprine (increase heart rate and blood pressure, increase blood flow to heart, lier, skeletal muscles and adipose tissue, increase blood levels of glucose and fatty acids) |
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Term
What are the two PRIMARY hormones secreted by the pancreas? |
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Definition
Glucagon (raises blood glucose levels)
Insulin (loswers blood glucose levels) |
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Term
What does the Pineal Gland secrete? |
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Definition
Melatonin- in response to absense of light (causes sleepiness) |
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Term
What does the Thymus Gland secrete? |
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Definition
Thymosin (involved with maturation and propagation of T Cells) |
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Term
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Definition
Pituitary Gland Disorder
growth plates remain open in children; hypersecretion of HGH in children |
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Term
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Definition
Pituitary Gland Disorder
hypersecretion of HGH in adults (mandible continues to grow along iwth hands, feet, cheeks, and the jaws while other tissues enlarge) |
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Term
Congenital Hypothyroidism
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Definition
hyposecretion of thyroid hormones at birth (also known as cretinism) causes severe mental retardation and stunted growth |
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Term
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Definition
produces myxedema (more often in females) causes edema to accumulate and swell; slow heart rate, low body temperature, sensitiity to cold, dry hair and skin, muscular weakness and tendency to gain weight easily |
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Term
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Definition
most common form of hypothyroidism (thyroid gland disorder)
autoimmune disorder where person pridyces abtubidues tagt nunuc TSH producing an enlarged thyroid |
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Term
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Definition
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Term
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Definition
Adrenal Gland Disorder
benign tumors of adrenal medulla; causes oversecretion of norepinephrin and epinephrin; prolonged fight or flight |
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Term
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Definition
Adrenal Gland Disorder
redistribution of fats (spindly arms)
poor wound healing |
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Term
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Definition
Adrenal Gland Disorder
hyposecretion of glucocorticoids and aldosterone
hypoglycemia, muscle weakness, LBP, looks bronzed, dehydration due to low sodium levels |
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Term
Diabetes Mellitus (I and II) |
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Definition
Type I- due to autoimmune illness; pancreas cannot produce insulin (usually found in children or young adults)
Type II-receptors are not functioning correctly, usually in overweight older adults |
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Term
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Definition
occurs when a diabetic injects too much insulin; causes hypoglycemia and maybe insulin shock |
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Term
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Definition
Cortical Nephron- in Loop of Henle; only extends slightly into pyramid (80%)
Juxtamedullary Nephron- Loop of Henle; extends much further down (20%) |
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Term
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Definition
circle around tubules filtering blood |
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Term
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Definition
peritubular capillaries that only circle around the loop of henle in the juxtamedullary nephrons |
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Term
Serous Membrane of Renal Corpuscle (2) |
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Definition
Visceral Layer-made of podocytes on the glomerulus (inside)
Parietal Layer- makes up Bowman's Capsul |
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Term
Renal Functions (Physiology) |
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Definition
regulate volume and composition of blood
rids body of urea, creatinine, uric acid (wastes)
glomerular filtration of plasma
tubular reabsorption
tubular secretion |
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Term
Specialized Cells in DCT (2) |
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Definition
Principal cells- have specific receptor sites for aldosterone and ADH
intercollated cells-last opportunity to fine tune the pH of blood; can remove or add hydrogen ions to urine
Once you pass the specialized cells, the fluid becomes liquid |
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Term
Counter-Current Mechanism |
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Definition
applies to the Loop of Henle
ions are actiely pumped out in the ascending loop (water will want to follow but cannot leave)
this creates a greater concentration of solutes that draw water out of the descending loop
Forwards Process Affects Previous Process |
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Term
Action of Lipid Soluble Hormones |
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Definition
transported by a protein in the blood
receptor site is located in the cytoplasm or nucleus
alters the DNA which will then transcribe new proteins that change the cell's function |
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Term
Actions of Water Soluble Proteins |
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Definition
Receptor Site is located on the cell membrane
converts ATP to cAMP (occurs in cytosol)
causes a series of events that add phosphate to proteins and change their structure |
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Term
3 Types of gland stimulation |
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Definition
humoral-levels of substances in the fluids or blood cause a gland to secrete a hormone
nerual- nervous tissue stimulates the gland
hormonal- hormones from one gland stimulate another gland to release hormones |
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Term
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Definition
conduit between nervous and endocrine systems |
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Term
Hypophyseal Portal System |
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Definition
bloodyish area connecting pituitary to hypothalamus
capillary bed to capillary bed
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Term
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Definition
corticotropin releasing hormone (hypothalamus)
to ACTH (adrenal corticotropin hormone) (anterior pituitary)
to Adrenal Cortext |
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Term
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Definition
growth horomone releasing hormone (hypothalamus)
to HGH (human growth hormone) in anterior pituitary gland
to all over your body |
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Term
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Definition
thyrotropin releasing hormone (hypothalamus)
to TSH (thryoid stimulating hormone) anterior pituitary
to Thyroid |
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Term
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Definition
gonatotropin releasing hormone (hypothalamus)
to FSH/LH (follicle stimulating hormone and lutinizing hormone) anterior pituitary gland
to ovaries and testes |
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Term
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Definition
polactin releasing hormone (hypothalamus)
to prolactin (anterior pituitary)
to mammory glands |
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Term
Posterior Pituitary Gland |
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Definition
made of nervous tissue
does not make any hormones of its own
stores 2 hormones from hypothalamus
1 ADH
2 Oxytocin (stimulates pregnancy contractions) |
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Term
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Definition
tissue made of of follicular cells that produce T3 and T4 |
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Term
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Definition
gel like substance in the thyroid gland that stores T3 and T4 |
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Term
What stimulates T3 and T4 to be released? |
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Definition
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Term
What are T3 and T4 responsible for? |
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Definition
regulating metabolism, growth of cells, chemical processes T4 is slow acting T3 is fast acting |
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Term
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Definition
located in between follicle cells in the thyroid gland
secrete calcitonin (gets calcium out of the blood when levels are too elevated) |
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Term
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Definition
(4) embedded in the thyroid galnds
secreted PTH when calcium levels in the blood are low; this travels to the kidney for the release of calcitreal (Vit D) that travels to the guy to release more calcium into the blood |
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Term
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Definition
produced by the afferent arteriole in response to LBP |
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Term
The visceral layer of the glomerular capsul consists of? |
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Definition
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Term
Aldosterone acts of the ______ to cause _______________. |
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Definition
DCT, sodium and water reabsorption |
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Term
The major fluid compartment of the body is? |
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Definition
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Term
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Definition
area on the floor of the urinary bladder flattened by three openings |
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Term
Where are interlobular arteries and veins located? |
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Definition
in the cortex of the kidney |
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Term
the network of capillaries where the filtration of the blood occurs in the.. |
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Definition
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Term
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Definition
secreted by sertoli cells and regulates FSH |
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Term
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Definition
establishes the fetal ability to tell self from non-self |
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Term
This hormone acts on itself to change transcription and genetic activity |
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Definition
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Term
The walls of the heart produce ____ which _____ blood pressure |
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Definition
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Term
ADH and oxytocin are produced by the ___________ |
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Definition
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Term
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Definition
eicosanoid that acts on smooth muscle |
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Term
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Definition
causes calcium levels to rise |
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Term
Erythopoietin is produced by the _______ and targets ____________ |
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Definition
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Term
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Definition
takes calcium out of the blood and increases bone formation |
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Term
What produces aldosterone? |
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Definition
Zona glomerulosa in the adrenal cortex |
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Term
What hormones are produced by the adenophypophysis? |
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Definition
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Term
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Definition
the myometrium of the uterus |
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Term
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Definition
the endometrium of the uterus |
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Term
Erection of the penis is sympathetic or parasympathetic? |
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Definition
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Term
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Definition
the removal of inhibitors form the acrosome of the sperm (occurs in the uterus) |
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