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Unit 3 test
heart, blood, muscles, resting membrane potential
19
Biology
Undergraduate 1
03/31/2009

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Cards

Term
cardiovascular system
Definition
heart and vessel system
Term
vertebrates
Definition
closed circulatory system
Term
heart
Definition

muscle

provides force to move blood through vessels

Term
vessels
Definition

arteries

carry blood away from the heart 

Term
3 layer tunics of arteries
Definition

inner

middle 

outer

Term
inner layer
Definition
endothelial cells
Term
middle layer
Definition

smooth muscle in a thick band

has the ability to vasoconstrict 

mediated by autonomic nervous system

Term
outer layer
Definition
connective tissue of collagen and elastin
Term
capillaries
Definition

sites of exchange

gas, nutrients and waste exchanged 

serve tissues

endothelium with loose connective tissue

very thin (1 blood cell through at a time)

 

Term
fenestra
Definition
small gaps between the epithelium cells where gas exchange occurs
Term
plasma
Definition

fluid in vessels

90% filtered plasma re-enters the capillaries

Term
interstial fluid
Definition

fluid oustide the vessels

10% returned to vessels via the lymphatic system 

Term
veins
Definition

return blood to heart

low blood pressure

have endothelium 

connective tissue sheath 

large diameter 

one-way valves

 

Term
blood
Definition

connective tissue

has two elements

plasma

nutrients

Term
plasma
Definition

fluid part of the blood

has H2O

salts 

proteins

Term
proteins in blood
Definition

albumin

transport proteins

lipids-low density lipoproteins

immuniglobulins

Term

nutrients in blood

 

Definition

glucose

amino acids

vitamins

Term
functions of blood
Definition

deliver oxygen and carbon dioxide

transport white blood cells

transport nutrients, waste, heat

store water

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