NPA Anatomy & Physiology of the Circulatory System 3

Question 1

What is the difference between serum and plasma?

Accepted Answer

Plasma contains clotting factors; serum does not

Answer

Serum contains clotting factors; plasma does not

Answer

Serum is obtained from EDTA tubes; plasma from SST tubes

Answer

Plasma has a higher red blood cell concentration than serum

Question 2

Hematopoiesis refers to:

Accepted Answer

The formation and development of blood cells

Answer

The clotting of blood after vessel injury

Answer

The breakdown of hemoglobin in the spleen

Answer

The exchange of gases in the pulmonary capillaries

Question 3

Which cellular blood component is primarily responsible for hemostasis (stopping bleeding) at a wound site?

Accepted Answer

Thrombocytes (platelets)

Answer

Erythrocytes

Answer

Leukocytes

Answer

Monocytes

Question 4

The innermost layer of a blood vessel that is in direct contact with blood is called the:

Accepted Answer

Tunica intima

Answer

Tunica media

Answer

Tunica externa

Answer

Tunica adventitia

Question 5

In the systemic circulation, arteries carry oxygenated blood ______ the heart and veins carry deoxygenated blood ______ the heart.

Accepted Answer

away from; toward

Answer

toward; away from

Answer

away from; away from

Answer

toward; toward

Question 6

Which large veins return deoxygenated blood from the body to the right atrium of the heart?

Accepted Answer

Superior and inferior vena cava

Answer

Pulmonary veins

Answer

Coronary veins

Answer

Hepatic portal vein

Question 7

When a phlebotomist collapses a vein during blood collection, it is most likely due to:

Accepted Answer

Applying excessive vacuum or suction too quickly

Answer

Using a needle that is too large in gauge

Answer

Not anchoring the vein before insertion

Answer

Inserting the needle at too steep an angle