Circulatory & Respiratory Systems - AYER 2025

The function of the heart is to:

• pump blood around the body

• bring oxygen into the body

• break down food

• give energy to the body

The heart has ___ chambers.

• 1
• 2
• 3
• 4

The heart is the major organ of what body system? 

• Respiratory
• Circulatory (cardiovascular)

Tags

NGSS.MS-LS1-3

The left side of the heart is surrounded by thicker muscle than the right side of the heart because the right side of the heart:

• pumps blood out to the whole body

• pumps blood out only to the lungs

• receives blood from the body

• the left side of the heart is NOT surrounded by thicker muscle

the smallest blood vessels in your body

• arteries

• veins

• capillaries

• aorta

The blood vessels that direct blood back to the heart are:

• veins

• arteries

• capillaries

The blood vessels that direct blood AWAY from the heart are the:

• arteries

• capillaries

• veins

The lungs are the major organ of what body system?

• Respiratory System

• Circulatory (Cardiovascular) System

Tags

NGSS.MS-LS1-3

Transporting materials throughout body is the function of the

• respiratory system

• cardiovascular (circulatory) system

Trachea, Bronchus, Bronchioles, Alveoli, Lungs are the main organs of the

• respiratory system

• cardiovascular (circulatory) system