A&P - Unit 5 - Circulatory System - Test Question Bank - 100?s

Front

What is bilirubin?

Back

A yellow-orange-brown pigment molecule made during the normal process of breaking down red blood cells in the liver.

Front

How long do red blood cells (RBCs) live?

Back

About 120 days.

Front

What valve does deoxygenated blood pass through as it leaves the right atrium?

Back

The tricuspid valve.

Front

What is a stethoscope?

Back

A device used by health professionals for listening to internal sounds, placed over the brachial artery to listen to sounds of blood flow.

Front

What does the prefix 'leuko-' mean?

Back

White.

Front

What is the function of red blood cells?

Back

To transport oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs.

Front

What is the role of the heart in the circulatory system?

Back

To pump blood throughout the body, supplying oxygen and nutrients while removing waste products.

Front

What are the two main types of circulation in the human body?

Back

Pulmonary circulation (between the heart and lungs) and systemic circulation (between the heart and the rest of the body).

Front

What is the significance of the aortic semilunar valve?

Back

It prevents backflow of blood from the aorta into the left ventricle after contraction.

Front

What is the function of platelets in the blood?

Back

To help with blood clotting and prevent excessive bleeding.