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MED TERM Chapter 16 Vocabulary
MED TERM Chapter 16 Vocabulary
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Medical
Undergraduate 1
04/03/2007

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Term
pituitary gland, hypophysis cerebri
Definition
approximately the size of a pea and located the base of the brain; divided into two lobes
Term
anterior lobe or adenohypophysis
Definition
produces and secretes growth hormone (GH), adrenocorticotropic hormone (ACTH), thyroid-stimulating hormone (TSH), gonadotropic hormones, follicle-stimulating hormone (FSH), luteinizing hormone (LH), and prolactic or lactogenic hormone (PRL)
Term
growth hormone (GH)
Definition
regulates the growth of the body
Term
adrenocorticotropic hormone (ACTH)
Definition
stimulates the adrenal cortex
Term
thyroid-stimulating hormone (TSH)
Definition
stimulates the thyroid gland
Term
gonadotropic hormones
Definition
affect the male and female reproductive systems
Term
follicle-stimulating hormone (FSH)
Definition
regulates development, growth, and function of the ovaries and testes
Term
luteinizing hormone (LH)
Definition
regulate development, growth, and function of the ovaries and testes
Term
prolactin or lactogenic hormone (PRL)
Definition
promotes development of glandular tissue during pregnancy and produces milk after birth of an infant
Term
posterior lobe or neurohypophysis
Definition
stores and releases antidiuretic hormone and oxytocin
Term
antidiuretic hormone (ADH)
Definition
stimulates the kidney to reabsorb water
Term
oxytocin
Definition
stimulates uterine contractions during labor and postpartum
Term
hypothalamus
Definition
located near the pituitary gland in the brain; secretes "releasing" hormone that functions to stimulate or inhibit the release of pituitary gland hormones
Term
thyroid gland
Definition
largest endocrine gland; located in the neck below the larynx and comprises bilateral lobes connected by an isthmus; secretes the hormones triiodothyronine (T3) and thyroxine (T4), which require iodine for their production; thyroxine is necessary for body cell metabolism
Term
parathyroid glands
Definition
four small bodies lying directly behind the thyroid; parathormone (PTH), the hormone produced by the glands, helps maintain the level of calcium in the blood
Term
islets of Langerhans
Definition
clusters of endocrine tissue found throughout the pancreas, made up of different cell types that secrete various hormones, including insulin and glucagon; nonendocrine cells found throughout the pancras perform nonendocrine functions such as digestion
Term
adrenal glands, suprarenals
Definition
paired glands, one of which is located above each kidney the outer portion is called the adrenal cortex, and the inner portion is called the adrenal medulla; hormones secreted by the adrenal glands include cortisol, aldosterone, epinephrine, and norepinephrine
Term
cortisol
Definition
secreted by the adrenal cortex; aids the body during stress by increasing glucose levels to provide energy (also called hydrocortisone)
Term
aldosterone
Definition
secreted by the adrenal cortex; electrolytes (mineral salts) that are necessary for normal body function are regulated by this hormone
Term
epinephrine (adrenaline)
Definition
secreted by the adrenal medulla; helps the body to deal with stress by increasing the blood pressure, heartbeat, and respirations
Term
norepinephrine (noradrenaline)
Definition
secreted by the adrenal medulla; helps the body to deal with stress by increasing the blood pressure, heartbeat, and respirations
Term
aden/o
Definition
gland
Term
adren/o, adrenal/o
Definition
adrenal glands
Term
cortic/o
Definition
cortex (the outer layer of a body organ)
Term
endocrin/o
Definition
endocrine
Term
parathyroid/o
Definition
parathyroid glands
Term
thyroid/o, thyr/o
Definition
thyroid gland
Term
acr/o
Definition
extremities, height
Term
calc/i
Definition
calcium
Term
dips/o
Definition
thirst
Term
kal/i
Definition
potassium
Term
natr/o
Definition
sodium
Term
-drome
Definition
run, running
Term
acromegaly
Definition
enlargement of the extremities (and bones of the face, hands, and feet caused by excessive production of the growth hormone by the pituitary gland after puberty)
Term
adenitis
Definition
inflammation of a gland
Term
adenodynia
Definition
pain in a gland
Term
adenomalacia
Definition
abnormal softening of a gland
Term
adenomegaly
Definition
enlargement of a gland
Term
adenosis
Definition
abnormal condition of a gland
Term
adrenalitis
Definition
inflammation of the adrenal gland
Term
adrenomegaly
Definition
enlargement (of one or both) of the adrenal glands
Term
hypercalcemia
Definition
excessive calcium (Ca) in the blood
Term
hyperglycemia
Definition
excessive sugar in the blood
Term
hyperkalemia
Definition
excessive potassium (K) in the blood
Term
hyperthyroidism
Definition
state of excessive thyroid gland activity (characterized by excessive secretion of thyroid hormones)
Term
hypocalcemia
Definition
deficient level of calcium in the blood
Term
hypoglycemia
Definition
deficient level of sugar in the blood
Term
hypokalemia
Definition
deficient level of potassium in the blood
Term
hyponatremia
Definition
deficient level of sodium (Na) in the blood
Term
hypothyroidism
Definition
state of deficient thyroid gland activity (characterized by decreased secretion of thyroid hormones)
Term
parathyroidoma
Definition
tumor of a parathyroid gland
Term
thyroiditis
Definition
inflammation of the thyroid gland
Term
acidosis
Definition
condition brought about by an abnormal accumulation of acid products of metabolism, seen frequently in uncotrolled diabetes mellitus
Term
Addison disease
Definition
chronic syndrome resulting from a deficiency in the hormonal secretion of the adrenal cortex; symptoms may include weakness, darkening of skin, loss of appetite, depression, and other emotional problems
Term
cretinism
Definition
condition caused by congenital absence or atrophy (wasting away) of the thyroid gland, resulting in hypothyroidism; characterized by puffy features, mental deficiency, large tongue, and dwarfism
Term
Cushing syndrome
Definition
group of symptoms attributed to the excessive production of cortisol by the adrenal cortices (pl. of cortex); may be the result of a pituitary tumor; symptoms include abnormally pigmented skin, "moon face," pads of fat on the chest and abdomen, "buffalo hump" (fat on the upper back), and wasting away of muscle
Term
diabetes insipidus (DI)
Definition
result of decreased secretion of antidiuretic hormone by the posterior lobe of the pituitary gland; symptoms include excessive thirst (polydipsia) and large amounts of urine (polyuria) and sodium being excreted from the body
Term
diabetes mellitus (DM)
Definition
chronic disease involving a disorder of carbohydrate metabolism; caused by underactivity of the islets of Langerhans in the pancreas, which results in insufficient production of insulin; when the disease is not controlled or is untreated, the patient may develop ketosis, acidosis, and finally coma
Term
gigantism
Definition
condition brought about by overproduction of growth hormone by the pituitary gland before puberty
Term
goiter
Definition
enlargement of the thyroid gland
Term
Graves disease
Definition
a disorder of the thyroid gland characterized by the presence of hyperthyroidism, goiter, and exophthalmos
Term
ketosis
Definition
condition resulting from uncontrolled diabetes mellitus, in whihc the body has an abnormal concentration of ketone bodies (compounds that are a normal product of fat metabolism)
Term
myxedema
Definition
condition resulting from a deficiency of the thyroid hormone thyroxine; a severe form of hypothyroidism in an adult; symptoms include puffiness of the face and hands, course and thickened skin, enlarged tongue, slow speech, and anemia
Term
tetany
Definition
condition affecting nerves causing muscle spasms as a result of low amounts of calcium in the blood caused by a deficiency of the parathyroid hormone
Term
thyrotoxicosis
Definition
a condition caused by excessive thyroid hormones
Term
yoga
Definition
the practice of physical posture, breathing exercises, and meditation; regular practice of yoga has been linked with decreased blood glucose levels and improved insulin kinetics in those with type 1 and type 2 diabetes
Term
Diabetes Mellitus, type 1
Definition
insulin-dependent diabetes mellitus (IDDM), juvenile-onset diabetes; beta cells of the pancreas that produce insulin are destroyed and eventually no insulin is produced; abrupt onset, occurs primarily in childhood or adolescence; patients often are thin; symptoms include polyuria, polydipsia, weight loss, and hyperglycemia; treatment includes insulin injections and diet
Term
Diabetes Mellitus, type 2
Definition
noninsulin-dependent diabetes mellitus (NIDDM), adult-onset diabetes (AODM); resistance of body cells to the action of insulin and also a decrease in insulin secretion; slow onset, usually occurs in middle-aged or elderly adults; many patients are obese; symptoms include fatigue, blurred vision, thirst, and hyperglycemia; may have neural or vascular complications; treatment includes oral hypoglycemics or insulin and diet
Term
adenectomy
Definition
excision of a gland
Term
adrenalectomy
Definition
excision of an adrenal gland
Term
parathyroidectomy
Definition
excision of a parathyroid gland
Term
thyroidectomy
Definition
excision of the thyroid gland
Term
thyroidotomy
Definition
incision of the thyroid gland
Term
thyroparathyroidectomy
Definition
excision of the thyroid and parathyroid glands
Term
radioactive iodine uptake test (RAIU)
Definition
a nuclear medicine scan that measures thyroid function; radioactive iodine is given to the patient orally, after which its uptake into the thyroid gland is measured
Term
thyroid scan
Definition
a nuclear medicine test that shows the size, shape, and position of the thyroid gland; the patient is given a radioactive substance to visualize the thyroid gland; an images is recorded as the scanner is passed over the neck area; used to detect tumors and nodules
Term
fasting blood sugar (FBS)
Definition
a blood test to determine the amount of glucose (sugar) in the blood after fasting for 8 to 10 hours; elevation indicates diabetes mellitus
Term
thyroid-stimulating hormone level (TSH) (thyrotropin)
Definition
a blood test that measures the amount of thyroid-stimulating hormone in the blood; used to diagnose hyperthyroidism and to monitor patients on thyroid replacement therapy
Term
thyroxine level (T4)
Definition
a blood study that gives the direct measurement of the amount of thyroxine in the patient's blood; a greater-than-normal amount indicates hyperthyroidism; a less-than-normal amount indicates hypothyroidism
Term
adrenocorticohyperplasia
Definition
excessive development of the adrenal cortex
Term
adrenopathy
Definition
disease of the adrenal gland
Term
calcipenia
Definition
deficiency of calcium (also called hypocalcemia)
Term
cortical
Definition
pertaining to the cortex
Term
corticoid
Definition
resembling the cortex
Term
endocrinologist
Definition
a physician who studies and treats diseases of the endocrine system
Term
endocrinology
Definition
the study of the endocrine (system); a branch of medicine dealing with diseases of the endocrine system
Term
endocrinopathy
Definition
(any) disease of the endocrine system
Term
euthyroid
Definition
resembling a normal (functioning) thyroid gland
Term
polydipsia
Definition
abnormal state of much thirst
Term
syndrome
Definition
(set of symptoms that) run (occur) together
Term
exophthalmos
Definition
abnormal protrusion of the eyeball
Term
hormone
Definition
a chemical substance secreted by an endocrine gland that is carried in the blood to a target tissue
Term
isthmus
Definition
narrow strip of tissue connecting two large parts in the body, such as the isthmus that connects the two lobes of the thyroid gland
Term
metabolism
Definition
sum total of all the chemical processes that take place in a living organism
Term
DI
Definition
diabetes insipidus
Term
DM
Definition
diabetes mellitus
Term
FBS
Definition
fasting blood sugar
Term
RAIU
Definition
radioactive iodine uptake
Term
T4
Definition
thyroxine level
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