Grade 9 reviewer Respiratory and Circulatory System

Breathing requires pressure change.

• True

• False

When we inhale, the muscles in the ribs and diaphragm contract; therefore, the lungs expand.

• True

• False

When we exhale, the volume of the lungs becomes larger; therefore, air flows from the lungs to the environment.

• True

• False

The cilia is the hairlike structure in the nose which traps dust and microorganisms.

• True

• False

The bronchi is a two-way passageway of air, and further branches off into bronchioles, which are then connected to the alveolar sacs.

• True

• False

What do you call this step?

• steps in gas exchange that occur in the alveolar sacs

• steps in gas exchange that occur in the bronchioles

• steps in gas exchange that occur in the pharnyx

• steps in gas exchange that occur in the bronchi

Give the major parts of the respiratory system.

• Brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body.

• Nose,Pharynx,Larynx,Trachea,Lungs

• Blood,The heart, Blood vessels, Arteries,Capillaries,Veins.

The circulatory system is responsible for the transport of gases, nutrients, and minerals needed by the body.

• True

• False

Hand-in-hand with the digestive system, the circulatory system delivers the important components from substances to other parts of the body.

• True

• False

Antibodies trigger a response from the immune system in the form of antigens.

• True

• False