lab 1- heart dissection Flashcards
1
Q
blood flow (starting where exchange occurs)
A
pulmonary capillaries L R pulmonary veins left atrium bicuspid left ventricle aortic valve aorta superior/inferior vena cava right atrium tricuspid right ventricle pulmonary valve pulmonary trunk L R pulmonary arteries
2
Q
tunica media
A
smooth muscle
doesn’t have striations
capable of vasoconstriction/dilation
3
Q
tunica intima
A
inner layer, endothelium- simple squamous, intimate with blood
4
Q
tunica adventitia
A
connective tissue, holds together
5
Q
how many layers does a vein have
A
3
6
Q
how many layers does a capillary have
A
1
7
Q
how many layers does an artery have
A
3
8
Q
auricle
A
faces anteriorly
9
Q
largest lumen
A
superior vena cava
10
Q
myocardium
A
intercalated discs, branching, centrally located nuclei, gap junction, non-voluntary
11
Q
atrial cell
A
60-80 bpm
12
Q
AV node
A
40-60 bpm
13
Q
ventricular cells
A
20-40 bpm
14
Q
skeletal muscle
A
striated, voluntary, parallel, multinucleate
15
Q
cardiac impulse flow
A
SA node atria slight pause @ AV node apex up sides of R/L ventricles
