Chapter 18- Heart

Question 1

Left side of the Heart

Answer 1

receives oxygenated blood from lungs. Pumps to body tissues via systemic circuit.

Question 2

Right Atrium (receiving chamber of the heart)

Answer 2

receives blood returning from systemic circuit

Question 3

Left atrium (receiving chamber of heart)

Answer 3

receives blood returning from pulmonary circuit.

Question 4

Right ventricle

Answer 4

pumps blood into pulmonary trunk

Question 5

left ventricle

Answer 5

pumps blood into the Aorta (largest artery in body)

Question 6

Trabeculae Carneae

Answer 6

Irregular ridges of muscle on walls

Question 7

Papillary muscles

Answer 7

anchor chordae tendineae.

Question 8

chordae tendineae

Answer 8

connect papillary muscle to mitral and tricuspid valve

Question 9

Prevent back-flow into atria when ventricles contract…

Answer 9

two atrioventricular (AV) valves

Question 10

Prevent back-flow into ventricles when ventricle relax…

Answer 10

two semilunar (SL) valves

Question 11

arteries arise from the base of the…

Answer 11

aorta

Question 12

cardiac veins

Answer 12

collects blood from capillary beds

Question 13

coronary sinus

Answer 13

emptie into right atrium; formed by merging cardiac veins

Question 14

Angina pectoris

Answer 14

thoracic pain caused by deficiency in blood delivery to myocardium. Cells weakened

Question 15

myocardial infarction

Answer 15

Heart attack. Prolonged coronary blockage. Areas of cell death repaired with non-contractile scar tissue

Question 16

intercalated discs

Answer 16

junctions between cells-anchor cardiac cells

Question 17

Right side of the heart

Answer 17

recieves oxygen-poor blood from tissue. Pump to the lungs to get rid of CO2, and pick up O2 via the PULMONARY CIRCUIT