EXAM 2 - BIOS255 CHAMBERLAIN
ACTUAL UPDATED QUESTION AND
ANSWERS
Which form of membrane movement is ideal for the diffusion of gases? - CORRECT
ANSWERS simple diffusion
Which major category of tissues is ideal for lining and covering structures? - CORRECT
ANSWERS epithelial tissue
Tunica Intimia (interna) consists of - CORRECT ANSWERS endothelial cells, connective
tissue
tunica media consists of - CORRECT ANSWERS elastic fibers and smooth muscle
tunica externa consists of - CORRECT ANSWERS epithelial cells, connective tissue,
elastic fibers
which layer is the largest? - CORRECT ANSWERS tunica media
why is the tunica media thicker in arteries than veins? - CORRECT ANSWERS they
supply more pressure to blood
what are the only blood vessels that contain valves? - CORRECT ANSWERS veins and
venules
what do valves do? - CORRECT ANSWERS prevent back flow of blood
,what is an artery - CORRECT ANSWERS blood vessels that transports blood AWAY from
the heart and TOWARDS the capillaries
are arteries oxygen rich or oxygen poor? - CORRECT ANSWERS oxygen rich
what is a vein? - CORRECT ANSWERS vessels that drain blood from the capillaries and
transport it TOWARDS the heart
are veins oxygen rich or oxygen poor? - CORRECT ANSWERS oxygen poor
what is a capillary? - CORRECT ANSWERS microscopic vessel that allows for the
exchange of substances between blood and tissues
what are capillaries composed of? - CORRECT ANSWERS layer of endothelium and a
basement membrane
what are elastic arteries composed of? - CORRECT ANSWERS more elastic fibers than
smooth muscle
what do elastic arteries do? - CORRECT ANSWERS conduct blood from the heart to
distant muscular arteries
why do elastic arteries stretch? - CORRECT ANSWERS to accommodate blood being
ejected from the ventricle
what do muscular arteries consists of? - CORRECT ANSWERS multiple layers of smooth
muscle
what do muscular arteries do? - CORRECT ANSWERS allow vessels to vasodilate and
vasoconstrict to regulate distribution of blood
, what do arterioles do - CORRECT ANSWERS deliver blood to the capillaries where
nutrient and gas exchange occur
what do arterioles consists of - CORRECT ANSWERS attached to capillary beds, pre
capillary sphincter
pre capillary sphincter function - CORRECT ANSWERS used to control blood flow
through the systemic capillary
arterioles are always under what? and what is it regulated by? - CORRECT
ANSWERS vasomotor tone, regulated by vasomotor center of the brainstem
what do continuous capillaries consists of - CORRECT ANSWERS endothelial cells that
encircle lumen, filtration cleft, systemic capillaries
what is the function of continuous capillaries? - CORRECT ANSWERS move small
nutrients and waste through simple diffusion
diffusion and bulk flow endocytosis
where are continuous capillaries found? - CORRECT ANSWERS muscles and skin
what do fenestrated capillaries consists of? - CORRECT ANSWERS fenestration
(windows), pores, filtration cleft
what is the function of fenestrated capillaries? - CORRECT ANSWERS allow more
capillary exchange and slightly larger molecules to be absorbed and filtered out of capillaries
where are fenestrated capillaries found? - CORRECT ANSWERS small intestine and
kidneys
ACTUAL UPDATED QUESTION AND
ANSWERS
Which form of membrane movement is ideal for the diffusion of gases? - CORRECT
ANSWERS simple diffusion
Which major category of tissues is ideal for lining and covering structures? - CORRECT
ANSWERS epithelial tissue
Tunica Intimia (interna) consists of - CORRECT ANSWERS endothelial cells, connective
tissue
tunica media consists of - CORRECT ANSWERS elastic fibers and smooth muscle
tunica externa consists of - CORRECT ANSWERS epithelial cells, connective tissue,
elastic fibers
which layer is the largest? - CORRECT ANSWERS tunica media
why is the tunica media thicker in arteries than veins? - CORRECT ANSWERS they
supply more pressure to blood
what are the only blood vessels that contain valves? - CORRECT ANSWERS veins and
venules
what do valves do? - CORRECT ANSWERS prevent back flow of blood
,what is an artery - CORRECT ANSWERS blood vessels that transports blood AWAY from
the heart and TOWARDS the capillaries
are arteries oxygen rich or oxygen poor? - CORRECT ANSWERS oxygen rich
what is a vein? - CORRECT ANSWERS vessels that drain blood from the capillaries and
transport it TOWARDS the heart
are veins oxygen rich or oxygen poor? - CORRECT ANSWERS oxygen poor
what is a capillary? - CORRECT ANSWERS microscopic vessel that allows for the
exchange of substances between blood and tissues
what are capillaries composed of? - CORRECT ANSWERS layer of endothelium and a
basement membrane
what are elastic arteries composed of? - CORRECT ANSWERS more elastic fibers than
smooth muscle
what do elastic arteries do? - CORRECT ANSWERS conduct blood from the heart to
distant muscular arteries
why do elastic arteries stretch? - CORRECT ANSWERS to accommodate blood being
ejected from the ventricle
what do muscular arteries consists of? - CORRECT ANSWERS multiple layers of smooth
muscle
what do muscular arteries do? - CORRECT ANSWERS allow vessels to vasodilate and
vasoconstrict to regulate distribution of blood
, what do arterioles do - CORRECT ANSWERS deliver blood to the capillaries where
nutrient and gas exchange occur
what do arterioles consists of - CORRECT ANSWERS attached to capillary beds, pre
capillary sphincter
pre capillary sphincter function - CORRECT ANSWERS used to control blood flow
through the systemic capillary
arterioles are always under what? and what is it regulated by? - CORRECT
ANSWERS vasomotor tone, regulated by vasomotor center of the brainstem
what do continuous capillaries consists of - CORRECT ANSWERS endothelial cells that
encircle lumen, filtration cleft, systemic capillaries
what is the function of continuous capillaries? - CORRECT ANSWERS move small
nutrients and waste through simple diffusion
diffusion and bulk flow endocytosis
where are continuous capillaries found? - CORRECT ANSWERS muscles and skin
what do fenestrated capillaries consists of? - CORRECT ANSWERS fenestration
(windows), pores, filtration cleft
what is the function of fenestrated capillaries? - CORRECT ANSWERS allow more
capillary exchange and slightly larger molecules to be absorbed and filtered out of capillaries
where are fenestrated capillaries found? - CORRECT ANSWERS small intestine and
kidneys
