Lab 2

define what blood vessels include

capillaries arteries and veins

arteries are ____ vessels because they carry blood away from the ____

conducting; heart

capillaries exchange between ___ and ____?

blood; interstitial fluid

____ accept blood from capillaries and ___ or aka return blood to heart

veins; drain

label from top left to bottom left and then top right to bottom right:

work bank

vein

tunica adventitia

elastic lamina

vaso vasorum

tunica intima

artery

basement membrane

venous valve

tunica media

correct answers

tunica interna/ intima contacts?

blood vessels in the lumen

what is known as the endothelium in blood vessels

tunica interna

part of the endothelium creates a slick surface minimizing friction as blood passes through what is this structure called

simple squamous epithelium

____ proteins attach endothelium to connective tissue

basement membrane

__ vessels have endothelium (aka tunica interna), continuous with heart endocardium

ALL

what blood vessels have the lowest blood pressure?

veins

in limbs ___ fold into the lumen to form the venous valves

endothelium cells

what kind of muscle is tunica media

smooth muscle with elastic fibers

contraction/ vasoconstriction ___ blood vessel diameter

decreases

relaxation/ vasodilation ___ vessel diameter

widens

what blood vessels have the thickest tunica media and why?

arteries because they need to maintain there shape even if blood pressure falls

what blood vessel carries the highest blood pressure

arteries

some arteries and veins have ___ between tunics

elastic laminae

during ___ blood surges into arteries and the elastic fibers ___

ventricular systole; stretch

tunica externa/ adventitia describe

loose areolar connective tissue

what is the function of tunic externa

attaches vessels to nearby structures

true or false arteries veins and nerves are packaged close together and their connective tissue interweaves

true

Large vessels have ______, networks of blood vessels which penetrate vessel layers to feed cells

vaso vasorum

the one on the left is a? the one on the right is a?

vein; artery

label from left down then right down then top center

word bank:

tunica media of vein

tunica externa

lumen of artery

lumen of vein

tunica intima

tunica intima

tunica media of artery

correct answers

conducting arteries include

pulmonary trunk

aorta

brachiocephalic trunk

common carotid

subclavian

common iliac

label from left down then right down

abdominal aorta

pulmonary trunk

aortic arch

subclavian

common iliac

common carotid

correct answers

____ arteries are large in circumference, ___ arteries are medium in circumference

conducting; distributing (muscular)

what arteries have relatively larger amounts of smooth muscle and fewer elastic fibers

distributing

__ capillaries branch from arterioles

microscopic

what are smooth muscles cells wrapping capillary entrances

precapillary sphincters

constricted sphincters ___ blood

block

when capillaries are closed arteriole blood flows into a _____

metarteriole

____ flow into the thoroughfare channel which receives blood from the capillaries

metarterioles

Left and right subclavian arteries give rise to_____________,
which combine to form __________ artery along the anterior aspect of
the brainstem

vertebral; basial

right and left common carotid artery give rise to ____ carotid artery which gives rise to anterior cerebral and ____ artery

internal; middle cerebral