Overview

Question 1

Automaticity

Answer 1

heart beats by itself

Question 2

myogenic

Answer 2

originates within heart/muscle

Question 3

Function of Sinoatrial node

Answer 3

specialized myocytes

initiates heartbeat

Question 4

Atrioventircular node located? Fcn?

Answer 4

between atria/ventricles

Slows conduction - allow atrial contraction to precedes ventricular contractions

Question 5

His-Purkinje system

Answer 5

bundle of his, L/R Bundle branches, Purkinje fibers (inner wall of ventricles)
Coordinated contraction of ventricles

Question 6

R atrium * R ventricles supplied by

Answer 6

Right main coronary artery

Question 7

LA/LV supplied by

Answer 7

Left coronary artery

Question 8

LCA bifurcates to

Answer 8

Left anterior descending

Circumflex arteries

Question 9

Coronary veins drains into:

Answer 9

coronary sinus (posterior of heart - drains into RA)

Question 10

BV: inner layer, connective tissue/vascular endothelium, signaling

Answer 10

tunica intima

Question 11

BV: Site of atherosclerotic plaque formation

Answer 11

tunica intima

Question 12

BV: Outer most layer

Answer 12

tunica adventitia

Question 13

BV: Connective tissue (collagen/elastin)

Answer 13

tunica adventitia

Question 14

BV: Middle layer/ control vessel diameter

Answer 14

Tunica Media

Question 15

Precapillary sphincter

Answer 15

smooth muscle bands at junction of arterioles and cap bed

Question 16

Blood flow in cap bed controlled by:

Answer 16

Pressure gradients/precapillary sphincter

Question 17

Lymph is _____ ______ fluids

Answer 17

filtered interstitial

Question 18

Lymphatic capillaries differ:

Answer 18

porous blind end capillary

Question 19

Lymphatic system is ___ pressure, ___ - way valves

Answer 19

low, one

Question 20

Flow of lymph/Blood per day

Answer 20

2-4 vs 7000

Question 21

General blood flow

Answer 21

aorta - large artery - small artery - arteriole - capillary - venule - vein - vena cava