Exercise 27

Question 1

Arteries

Answer 1

Under high pressure, thick walled

Carries oxygenated blood away from heart

Question 2

Pulmonary arteries

Answer 2

Carries deoxygenated blood

Question 3

Arterioles

Answer 3

Small arteries

Question 4

Capillaries

Answer 4

Smallest blood vessels

Materials can exchange

Question 5

Venules

Answer 5

Small veins

Question 6

Veins

Answer 6

Under low pressure, thin walled

Carries deoxygenated blood into heart

Question 7

Pulmonary veins

Answer 7

Carries oxygenated blood

Question 8

Blood vessel pathway

Answer 8

Artery -> arterioles -> capillaries -> venules -> veins

Question 9

Myocardium

Answer 9

Cardiac muscle

Question 10

Ligumentum arteriosum

Answer 10

Blood vessel closed in adults
Located between pulmonary trunk and aorta
Helped before lungs were developed

Question 11

Atrium (R/L)

Answer 11

Upper ‘receiving’ chambers of heart

Atria (plural)

Question 12

Ventricle (R/L)

Answer 12

Lower ‘pumping’ chambers of heart

Question 13

Heart valve

Answer 13

Open when blood flows in right direction, closes to prevent blood flow in wrong direction

Question 14

Tricuspid valve

Answer 14

Located between right atrium and right ventricle

Question 15

Bicuspid valve

Answer 15

Located between left atrium and left ventricle

Question 16

Pulmonary valve

Answer 16

Located between right ventricle and pulmonary trunk

Question 17

Aortic valve

Answer 17

Located between left ventricle and aorta

Question 18

Chordae tendineae

Answer 18

Attached to the valves between atria and ventricles

Question 19

Interventricular septum

Answer 19

Separates right and left ventricles

Question 20

Interatrial septum

Answer 20

Separates right and left atria

Question 21

Papillary muscle

Answer 21

Attached to heart wall and to chordae tendineae

Question 22

Apex

Answer 22

Most inferior part of heart

Question 23

Coronary sinus opening

Answer 23

Blood from coronary sinus enters right atrium via this opening

Question 24

Fossa ovalis

Answer 24

Closed in adults

Located between right atrium and left atrium (within intertrial septum)

Question 25

Coronary artery (R/L)

Answer 25

Vascularizes myocardium

Question 26

Blockage of coronary arteries or veins can lead to

Answer 26

Heart attack

Question 27

Coronary sinus (posterior)

Answer 27

Collects venous blood from coronary veins | Empties into right atrium through coronary sinus opening

Question 28

Pulmonary circulation

Answer 28

Takes blood from right ventricle to lungs back to atrium

Question 29

Systemic circulation

Answer 29

Takes blood from left ventricle to body tissues and back to right atrium

Question 30

Superior vena cava

Answer 30

Returns blood from head, neck, and arms to the heart

Question 31

Inferior vena cava

Answer 31

Returns blood from the inferior portion of the body (below the heart) to the heart

Question 32

Auricles

Answer 32

Pouch-like extensions of the atria