NPA Anatomy & Physiology of the Circulatory System 2

Question 1

Which vein runs along the lateral (thumb) side of the forearm and is considered the third choice for venipuncture in the antecubital fossa?

Accepted Answer

Cephalic vein

Answer

Basilic vein

Answer

Median cubital vein

Answer

Median antebrachial vein

Question 2

Approximately how much blood does the average adult human body contain?

Accepted Answer

4–6 liters

Answer

2–3 liters

Answer

7–9 liters

Answer

10–12 liters

Question 3

What is the primary role of erythrocytes (red blood cells)?

Accepted Answer

Transport oxygen and carbon dioxide

Answer

Fight infection and produce antibodies

Answer

Facilitate blood clotting at injury sites

Answer

Produce clotting factors in the liver

Question 4

Which vein runs along the medial (pinky finger) side of the forearm and is considered the second choice for antecubital venipuncture?

Accepted Answer

Basilic vein

Answer

Cephalic vein

Answer

Median antebrachial vein

Answer

Median cubital vein

Question 5

What is plasma?

Accepted Answer

The liquid portion of blood containing clotting factors and proteins

Answer

The liquid portion of blood after clotting factors have been removed

Answer

The cellular portion of whole blood

Answer

Concentrated red blood cells separated by centrifugation

Question 6

Which pulmonary vessel is unique in that it carries deoxygenated blood?

Accepted Answer

Pulmonary arteries

Answer

Pulmonary veins

Answer

Aorta

Answer

Superior vena cava

Question 7

The sinoatrial (SA) node is often called the 'pacemaker of the heart' because it:

Accepted Answer

Initiates the electrical impulse that triggers each heartbeat

Answer

Controls blood pressure in the aorta

Answer

Regulates oxygen levels in coronary arteries

Answer

Prevents backflow between heart chambers