Physiology I - Exam 2 - Practice Questions

Question 1

Answer 1

B. AV node

Question 2

Answer 2

D. P

Question 3

Answer 3

B. Atrial repolarization

Question 4

Answer 4

D. 120°

Question 5

Answer 5

A. Lead I

Question 6

Answer 6

D. Lead II, because it is most parallel to the vector for the depolarization wave.

Question 7

Answer 7

A. 59°

Question 8

Answer 8

D. All the above

Question 9

Answer 9

B. Sinus bradycardia

Question 10

Answer 10

D. AV block

Question 11

Answer 11

B. Fibrillation may occur when the pathway around the circle is too short.

Question 12

Answer 12

C. Veins

Question 13

Answer 13

B. Vessel diameter

Question 14

Answer 14

B. 1PRU

Question 15

Answer 15

A. Tendency for turbulence

Question 16

Answer 16

B. 3.0

Question 17

Answer 17

A. Only statement 1 is true.

Question 18

Answer 18

B. Compliance

Question 19

Answer 19

D. The greater the amount of elastic tissue in a blood vessel the lower the compliance and the greater the elastance.

Question 20

Answer 20

B. Systemic arterioles

Question 21

Answer 21

A. Femoral artery

Question 22

Answer 22

C. Metarterioles

Question 23

Answer 23

C. Plasma colloid osmotic pressure

Question 24

Answer 24

C. 28.0 mm Hg

Question 25

Answer 25

A. Autoregulation of blood flow

Question 26

Answer 26

C. Oxygen and accumulation of tissue waste products

Question 27

Answer 27

C. Nitric oxide

Question 28

Answer 28

A. Inhibit vasoconstrictor and excite vasodilator centers

Question 29

Answer 29

D. Increase in atrionatriuretic peptide (ANP)

Question 30

Answer 30

A. Sedentary life style

Question 31

Answer 31

C. Activation of renal-pressure natriuresis mechanism

Question 32

Answer 32

B. Liver

Question 33

Answer 33

E. It would result in sodium and water loss and decreased arterial pressure.

Question 34

Answer 34

A. The difference between the oxygen concentration in the systemic arterial blood and the systemic mixed venous blood

Question 35

Answer 35

A. Hypertrophy of the heart

Question 36

Answer 36

D. High-output cardiac failure

Question 37

Answer 37

C. Blood flow resistance between peripheral vessels and right atrium

Question 38

Answer 38

C. An increase in mean systemic pressure and a shift of the vascular function curve to the right.

Question 39

Answer 39

C. Local metabolites of skeletal muscle arterioles

Question 40

Answer 40

D. 0 liters per minute

Question 41

Answer 41

B. Increase in the mean systemic filling pressure due to contraction of the muscle walls of veins

Question 42

Answer 42

C. Local muscle metabolism

Question 43

Answer 43

C. Sympathetic response

Question 44

Answer 44

A. Pulmonary vascular congestion and pulmonary edema

Question 45

The second heart sound is due to which of the following events?

A. Closure of atrioventricular valves at onset of ventricular systole

B. Opening of atrioventricular valves at onset of atrial systole

C. Closure of semilunar valves at onset of ventricular diastole

D. Opening of semilunar valves at onset of ventricular diastole

Answer 45

C. Closure of semilunar valves at onset of ventricular diastole

Question 46

Answer 46

B. Hemorrhagic in origin

Question 47

Answer 47

B. It decreases venous return and cardiac output.

Question 48

Answer 48

A. Lying down

Question 49

Answer 49

D. Posterior pituitary

Question 50

Answer 50

A. Hemorrhage

Question 51

Answer 51

C. Nitric oxide

Question 52

Answer 52

A. Increase in volume

Question 53

Answer 53

B. Compliance

Question 54

Answer 54

E. B and C only

Question 55

Answer 55

C. Diffusion

Question 56

Answer 56

B. Hering nerves

Question 57

Answer 57

A. 25%

Question 58

Answer 58

C. The extracellular volume increases and the intracellular volume decreases; osmolarity in both compartments increases.

Question 59

Answer 59

A. Ethanol

Question 60

Answer 60

C. Glomeruli lie in the outer cortex and have short loops of Henle.

Question 61

Answer 61

A. Tachycardia