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AP Biology
Chapter 38
61
Biology
12th Grade
04/30/2011

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Term
circulatory system
Definition
function: to move substances in the blood to and from cells
Term
blood
Definition
the transport medium of the circulatory system that flows inside tubular vessels
Term
heart
Definition
the muscular pump that contracts to circulate blood through arteries and vessels,helps with the stabalizing of internal pH, carries away metabolic wastes and secretions, transports oxygen
Term
interstitial fluid
Definition
the fluid in the tissue spaces between cells that exchanges substances with cells
Term
open circulatory system
Definition
blood flows in and o ut of vessels or the heart
Term
closed circulatory system
Definition
blood is pumped from heart to vessels then back to the heart while confined in the blood vessels
Term
pulmonary circuit
Definition
pumps oxygen poor, carbon dioxide rich blood from the heart to the lungs
Term
systemic circuit
Definition
pumps oxygenated blood to tissues
Term
lymphatic system
Definition
vessels return excess interstitial fluid to blood
Term
stem cell
Definition
an unspecialized cell whose daughter cells can differentiate into specialized cells
Term
plasma
Definition
solvent for proteins, molecules, and ions that transport lips and vitamins; also functions in blood clotting
Term
red blood cells
Definition
transport oxygen to cells going through aerobic respiration and carry carbon dioxide from them
Term
cell count
Definition
measures the quantity of cells of a specific type
Term
platelets
Definition
activate blood clotting
Term
anemias
Definition
disorders where there are to few red blood cells or deformed red blood cells
Term
hemorrhagic anemia
Definition
sudden blood loss
Term
hemolytic anemia
Definition
when bacteria and protozoans replicate in blood cells
Term
iron deficiency anemia
Definition
caused by an insufficient amount of iron in the diet resulting in the red blood cells losing the capability to make enough hemoglobin
Term
sickle-cell anemia
Definition
caused by a mutation that modifies hemoglobin
Term
polycythemias
Definition
too many red blood cells which elevates blood pressure
Term
leukemia
Definition
interfere with the formation of white blood cells
Term
agglutination
Definition
antibodies bind foreign cells and make them form clumps to attract phagocytes
Term
Rh blood typing
Definition
based on presence or absece of Rh marker
Term
aorta
Definition
main artery of the heart
Term
jugular veins
Definition
recieve blood from brain and from tissues of head
Term
superior vena cava
Definition
recieves blood from veins and upper body
Term
pulmonary veins
Definition
deliver oxygenated blood from the lungs to the heart
Term
hepatic vein
Definition
delivers nutrient rich blood from small intestine to the liver
Term
renal vein
Definition
carries processed blood away from kidneys
Term
inferior vena cava
Definition
recieves blood from all veins below diaphragm
Term
iliac veins
Definition
carry blood away from pelvic organs and lower abdominal wall
Term
femoral vein
Definition
carries blood away from the thigh and inner knee
Term
carotid arteries
Definition
deliver blood to neck, head, & brain
Term
ascending aorta
Definition
cacrries oxygenated blood away from the heart
Term
coronary arteries
Definition
carry the incessantly active cardiac muscle cells of heart
Term
brachioal artery
Definition
delivers blood ro upper extremities; place of blood pressure measurement
Term
renal artery
Definition
delivers blood to kidneys where its volume, and cimposition are adjusted
Term
abdominal aorta
Definition
delivers blood to arteries leading to the digestive tract, kidneys, and pelvic region
Term
iliac arteries
Definition
deliver blood to pelvic organs and lower abdominal wall
Term
femoral artery
Definition
delivers blood to the inner thigh and knee
Term
cacrdiac cycle
Definition
when all four chamberss go through expansion and contraction (diastole and systole)
Term
cardiac muscle
Definition
the muscle found only in the heart
Term
cardiac conduction system
Definition
initiates and distributes signals thst tell cardiac muscle cells to contract
Term
cardiac pacemaker
Definition
a clump of noncontracting cells that fire action potentials over and over which will then trigger cardiac cycles
Term
arteries
Definition
rapid transport vessels for blood pumped OUT of the heart
Term
arterioles
Definition
smaller vessels that control blood flow
Term
capillaries
Definition
small blood vessels rhat form diffusion zones
Term
venules
Definition
small vessels located betweem cappilaries and veins
Term
veins
Definition
large vessels that transport blood back to the heart
Term
blood pressure
Definition
fluid pressure imparted to blood by ventricular contractions
Term
vasodilation
Definition
diameter of blood vessel enlarges
Term
vaso constriction
Definition
diameter of blood vessel constricts
Term
bulk flow
Definition
movement of water and solutes in response to a difference in fluid pressure between regions
Term
ultrafiltration
Definition
small amount of protein free plasma is pushed out through clefts in the cappillary wall
Term
capillary reabsorption
Definition
tissue fluid moves into capillaries through clefts in the capillary wall
Term
hemostasis
Definition
stops blood loss from small blood vessels that hve become ruptured or cut
Term
atherosclerosis
Definition
arteries thicken and lose elasticity
Term
lymph vascular system
Definition
consists of many tubes that collect and deliver water and solutes from interstitial fluid to ducts of circulatory system,
Term
lymph nodes
Definition
located at intervals between lymph vessels to filtration the lymph
Term
spleen
Definition
forms red blood cwlls in embryos and filters pathogens from blood vessels
Term
thymus gland
Definition
T lymphocytes recognize and respond to certain pathogens
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