The Respiratory System

The main function of the respiratory system is _______.

• to provide oxygen and remove carbon dioxide from the body

• to clean the blood

• to break down food and absorb nutrients

• to remove oxygen from the body

The air sacs that are covered with capillaries where gas exchange takes place are called __________.

• bronchi

• lungs

• oxygen

• alveoli

Alternative name for the wind pipe is _______.

• esophogus

• bronchi

• trachea

• alveoli

A muscle sheath beneath the lungs that contacts and relaxes to cause gas exchange in and out of the body.

• alveoli

• diaphragm

• ribs

• intercostal muscles

Two short tubes that carry air into the lungs

• Trachea
• Bronchioles
• Lungs
• Bronchi

Passage way that moistens the air and has hairs to trap dust and particles

• Nasal cavity
• Bronchi
• Mouth cavity
• Larynx

The job of the red blood cell is to

• fight infection

• deliver oxygen and remove carbon dioxide

• form scabs

• deliver carbon dioxide and remove oxygen

Choose the best statement below that explains the relationship between respiratory and circulatory system.

• The respiratory system takes in food and the circulatory system takes the food to your muscles.

• The respiratory system takes in blood and the circulatory system takes the blood to your muscles.

• The respiratory system takes the oxygen to your muscles and the circulatory system takes in oxygen.

• The respiratory system takes in oxygen and the circulatory system takes the oxygen to all parts of your body.

What is function of the dome-shaped diaphragm muscle?

• This is where gas exchange happens.

• Air passes through the diaphragm on the way to the lungs.

• It attaches to the lungs and contracts and relaxes to help in breathing.

• It helps to filter the air from dust particles.

Figure below shows one type of blood cell. What is the name of the blood cells and its function?

• Red blood cell , Transport food

• White blood cell , Transport food

• Red blood cell, Transport oxygen

• White blood cell, Transport oxygen