Cardiovascular System (31 Question)

Question 1

Heart Anatomy & Blood Flow

Answer 1

Right atrium (RA) — Right ventricle (RV) — Lungs (Pulmonary artery, deoxygenated) — Left atrium (LA) — Left ventricle (LV) — Body ( aorta, Oxygenated).

Question 2

Valves:

Answer 2

Tricuspid between ( RA — RV).
Pulmonary between ( RV— Lungs).
Mitral between ( Bicuspid) ( LA— LV).
Aortic between ( LV— Aorta).

Question 3

SA Node =

Answer 3

Pacemaker ( 60-100 bpm).

Question 5

AV Node =

Answer 5

Delays impulse ( 40-60 bpm).

Question 6

QRS Complex on ECG =

Answer 6

Ventricular depolarization ( contraction).

Question 7

T wave =

Answer 7

Ventricular repolarization.

Question 8

Arteries =

Answer 8

Carry oxygenated blood (Except pulmonary artery).

Question 9

Veins =

Answer 9

Carry deoxygenated blood ( except pulmonary vein).

Question 10

Capillaries =

Answer 10

Site of gas/nutrient exchange.

Question 11

BP =

Answer 11

Systolic/Diastolic (normal ~120/80 mmHg).

Question 12

Baroreceptors

Answer 12

in aorta & carotid detect BP changes.

Question 13

Sympathetic nervous system =

Answer 13

Increases Heart Rate & Blood pressure.

Question 14

Parasympathetic nervous system =

Answer 14

Decreases HR & BP.

Question 15

Vasodilation =

Answer 15

Decreases BP

Question 16

Vasoconstriction

Answer 16

Increases BP.

Question 17

ADH

Answer 17

Increases BP by retaining water.

Question 18

Ischemia =

Answer 18

Low blood flow to tissues.

Question 19

Angina =

Answer 19

Chest pain from reduced heart oxygen.

Question 20

Myocardial infarction ( heart attack) =

Answer 20

Blocked coronary artery.