Circulatory & Lymphatic & Immune Systems

Question 1

In the circulatory system, gas exchange occurs in the

Answer 1

Capillaries

Question 2

Which blood vessels are a single cell in thickness?

Answer 2

Capillaries

Question 3

Veins and arteries are composed of how many layers?

Answer 3

3

Question 4

A characteristic of arteries is

Answer 4

They have a thick muscle layer lining the lumen

Question 5

An average adult has _______ L of blood.

Answer 5

5-6

Question 6

Plasma constitutes _______ % of total blood volume.

Answer 6

55% (always little over half)

Question 7

Another name for a WBC is

Answer 7

Leukocyte

Question 8

The main function of leukocytes is to

Answer 8

Protect body against infection

Question 9

Which leukocyte is known as a phagocyte?

Answer 9

Neutrophil

Question 10

Platelets remain in the circulation for

Answer 10

9-12 days

Question 11

Which cellular component is responsible for the transport of hemoglobin?

Answer 11

RBCs

Question 12

Which laboratory test does assist in diagnosing HIV infection?

Answer 12

aPTT

Question 13

A group of inherited disorders marked by increased bleeding times is known as

Answer 13

Hemophilias

Question 14

Which organs are included in the lymphatic system?

Answer 14

Spleen, Thymus, Tonsils

Question 15

Helper T cells are needed to make

Answer 15

Antibodies

Question 16

Platelets are also called?

Answer 16

Thrombocytes