Heart Terms

Question 1

Pulmonary Circuit

Answer 1

(R side of heart receives O2 poor blood from tissues); pumps blood to lungs to get rid of CO2 and picks up O2 (oxygen loading)

Question 2

Systemic Circuit

Answer 2

(L side of heart receives O2 rich blood from lungs); pumps blood to rest of body.

Question 3

Right Atrium

Answer 3

Receives blood returning from systemic circuit.

Question 4

Left Atrium

Answer 4

Receives blood from pulmonary circuit

Question 5

Right Ventricle

Answer 5

Pumps blood to pulmonary circuit

Question 6

Left Ventricle

Answer 6

Pumps blood to systemic circuit

Question 7

Apex

Answer 7

tip of heart facing left hip

Question 8

Pericardium

Answer 8

double-walled sac surrounds heart. Has two layers: fibrous pericardium (protect and anchor heart) & serous pericardium (touches heart)

Question 9

Serous Pericardium

Answer 9

Includes two layers: Parietal layer (underneath fibrous pericardium) & Visceral layer (epicardium).
*between these two layers = pericardial cavity (reduces friction)

Question 10

Epicardium

Answer 10

visceral layer of serous pericardium- underneath the fibrous pericardium

Question 11

Myocardium

Answer 11

Circular bundles of contractile cardiac muscle cells.

MIDDLE layer

Question 12

Endocardium

Answer 12

Innermost layer; lines heart chambers

Question 13

Interventricular Septum

Answer 13

Separates R &L ventricles

Question 14

Auricles

Answer 14

Increase volume in both atria

Question 15

Papillary Muscles

Answer 15

Attach to chordae tendinae to prevent them from over flapping.
(rooted in inferior of ventricles)

Question 16

Atrioventricular Valves

Answer 16

B/w atria and ventricles (bicuspid=L, & tricuspid=R)

Question 17

Tricuspid Valve

Answer 17

atrioventricular valve b/w right atrium and right ventricle

Question 18

Bicuspid/Mitral Valve

Answer 18

atrioventricular valve b/w left atrium and left ventricle

Question 19

Semilunar Valves

Answer 19

Valves that divide ventricles from major arteries; prevent backflow

Question 20

Chordae Tendinae

Answer 20

Hold flaps closed and prevent flaps from letting blood go back to the atria. (in ventricles)

Question 21

Pulmonary Semilunar Valve

Answer 21

b/w R ventricle and pulmonary artery

Question 22

Aortic Semilunar Valve

Answer 22

b/w L ventricle and aorta

Question 23

Coronary Arteries

Answer 23

give blood to heart through the coronary sulcus

Question 24

Intercalated Discs

Answer 24

junctions b/w cardiac cells that contain desmosomes (prevent cells from moving) .
work with gap junctions for ion transport