Ch.3,les4

Question 1

Heart

Answer 1

The muscular organ that pumps blood throughout the body.

Question 2

Atrium

Answer 2

An upper chamber of the human heart.there are two. One on the left side and one on the right side.

Question 3

Ventricle

Answer 3

A lower chamber of the human heart. There are two.One on the left side and one on the right side.

Question 4

Valve

Answer 4

A structure that allows fluids to flow in only one direction.

Question 5

Artery

Answer 5

A blood vessel that carries oxygen-rich blood away from the heart.

Question 6

Aorta

Answer 6

A large artery that carries oxygen-rich blood away from the heart to the rest of the body.

Question 7

Vein

Answer 7

A blood vessel that transports blood into the heart.

Question 8

Vena cava

Answer 8

The main vein leading from the body into the heart.

Question 9

Capillary

Answer 9

A tiny blood vessel that connects arteries and veins.

Question 10

Circulatory system

Answer 10

The organ system that moves blood through the body.(also known as the cardiovascular system)