Chapter 3

Question 1

Which of the following is a small terminal branch of an artery, which ends in capillaries?

a. Vein
b. Atrium
c. Arteriole
d. Venule

Answer 1

c. Arteriole Correct

Question 2

Which of the following is a system of organs that collects oxygen from the external environment and transports it to the bloodstream?

a. Integumentary system
b. Endocrine system
c. Respiratory system
d. Immune system

Answer 2

Respiratory system

Question 3

After leaving the left ventricle, blood enters which structure?

a. Inferior vena cava
b. Superior vena cava
c. Aorta
d. Pulmonary artery

Answer 3

Aorta Correct

Question 4

Heavy breathing results in an increase in the activity level of which of the following secondary respiratory muscles?

a. Internal oblique
b. Scalenes
c. Diaphragm
d. Rectus abdominis

Answer 4

b. Scalenes

Question 5

What term describes the number of heart beats per minute and the amount of blood pumped per beat?

a. Cardiac output
b. Blood pressure
c. Heart rate
d. Stroke volume

Answer 5

a. Cardiac output Correct