The Cardiovascular System The Heart - Principles of Human Anatomy

There are four valves in the heart:
1) bicuspid (mitral)
2) tricuspid
3) pulmonary semilunar
4) aortic semilunar
What is the correct order in which blood flows through these valves, starting in the right atrium?

A) 1, 4, 2, 3
B) 1, 3, 2, 4
C) 2, 3, 1, 4
D) 2, 4, 1, 3

Answer

Question 2

(Multiple Choice)

Free

A vascular sinus, such as the coronary sinus, is best described as:

A) a thin-walled vein that has no smooth muscle to alter its diameter.
B) a thin-walled artery that has no smooth muscle to alter its diameter.
C) a connection between blood vessels that allows for multiple routes of blood flow.
D) a blood-filled connective tissue.

Answer

Question 3

(Multiple Choice)

Free

When auscultating heart sounds, S2 is caused by blood turbulence associated with closure of the _____ valves at the beginning of ventricular _____.

A) AV; diastole
B) Semilunar; systole
C) AV; systole
D) Semilunar; diastole

Answer