Week 2

Question 1

Aorta

Answer 1

the main artery that supplies oxygenated blood to circulatory system

Question 2

Aortic Semilunar Valve

Answer 2

connects your heart ventricles and arteries

Question 3

Av Node

Answer 3

Atrioventricular node:electrical relay station between the upper and lower chambers of the heart

Question 4

Atrium

Answer 4

an anatomical cavity or passage

Question 5

automaticity

Answer 5

spontaneous impulse initiation

Question 6

Bachmann’s bundle

Answer 6

interatrial bundle, a muscular bundle that connects the right and left atria

Question 7

Bundle Branches

Answer 7

offshoots of the bundle of His in the heart’s ventricle

Question 8

Bundle of His

Answer 8

an elongated segment connecting the AV node and the left and right bundle Branches of the septal crest

Question 9

Cardiac cycle

Answer 9

series of pressure changes in the heart

Question 10

Chordae Tendineae

Answer 10

strong fibrous connections between the valve leaflets and the papillary muscles

Question 11

conductivity

Answer 11

the ability of cells to transmit electrical impulses

Question 12

contractility

Answer 12

the ability of the heart muscle to shrink and pump blood

Question 13

coronary circulation

Answer 13

circulation of blood in the arteries and veins that supply the heart’s muscle

Question 14

deoxygenated blood

Answer 14

(venous blood) which travels from the peripheal blood vessels

Question 15

diastole

Answer 15

relaxed phase of the cardiac cycle when the chambers of the heart are refilling with blood (bottom number of the blood pressure)

Question 16

excitability

Answer 16

ability to respond to a stimulus

Question 17

interatrial septum

Answer 17

a thin wall of tissue that separates the right and left atria of the heart

Question 18

interventricular septum

Answer 18

separates the left and right ventricles

Question 19

left atrium

Answer 19

one of 4 chambers of the heart

Question 20

left ventricle

Answer 20

contracts which forces oxygenated blood through the aortic valve

Question 21

mitral valve

Answer 21

valve that keeps blood flowing in the right direction

Question 22

myocardial

Answer 22

relating to the muscular tissue of the heart

Question 23

oxygenated blood

Answer 23

a blood cell with hif=gh proportion of oxygen

Question 24

papillary muscles

Answer 24

5 pillar like muscles seen within the cavity of the ventricles

Question 25

parasympathetic

Answer 25

balances your sympathetic nervous system

Question 26

pericardium

Answer 26

fluid sac that surrounds the heart

Question 27

pulmonary artery

Answer 27

blood vessels that carry deoxygenated blood from the right side of your heart to your lungs

Question 28

pulmonary circulation

Answer 28

vast network that exchange blood and other tissue fluids

Question 29

pulmonary semilunar valve

Answer 29

separates the right vetricle from the pulmonary trunk

Question 30

pulmonary veins

Answer 30

vein carrying oxygenated blood from lungs to the left atrium

Question 31

purkinje fibers

Answer 31

specialized for conduction of impulses

Question 32

purkinje network

Answer 32

network of purkinje fibers that carry the cardiac impulse

Question 33

right atrium

Answer 33

one of 4 chambers of the heart

Question 34

right ventricle

Answer 34

accepting venous blood and propelling it to the lungs

Question 35

semilunar valve

Answer 35

prevents blood from flowing back into the heart

Question 36

sinoatrial node

Answer 36

generate electrical signal that cause upper heart chambers to contract

Question 37

systemic circulation

Answer 37

carries blood from left ventricle to organs and tissues of the body

Question 38

systole

Answer 38

period of contraction of the ventricles

Question 39

tricuspid valve

Answer 39

one of 4 valves that ensure blood flows in the correct direction

Question 40

vena cava

Answer 40

a large vein that carries blood to the heart

Question 41

sympathetic