Circulatory, Respiratory, & Digestive Asher

Front

What is the main function of the circulatory system?

Back

To transport blood, nutrients, gases, and waste products throughout the body.

Front

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

Back

The heart pumps blood throughout the body, supplying oxygen and nutrients to tissues and removing waste.

Front

Define 'alveoli'.

Back

Tiny air sacs in the lungs where gas exchange occurs.

Front

What is the function of the epiglottis?

Back

To prevent food and liquid from entering the trachea during swallowing.

Front

What are capillaries?

Back

Small blood vessels that connect arteries and veins, allowing for the exchange of materials between blood and tissues.

Front

Describe the pathway of blood through the heart.

Back

Blood enters the right atrium, moves to the right ventricle, is pumped to the lungs, returns to the left atrium, moves to the left ventricle, and is pumped to the body.

Front

What is the function of the diaphragm in the respiratory system?

Back

To contract and relax, facilitating breathing by changing the pressure in the thoracic cavity.

Front

What is the trachea?

Back

The windpipe that connects the larynx to the bronchi, allowing air to pass to the lungs.

Front

Explain the process of gas exchange in the lungs.

Back

Oxygen from the air in the alveoli diffuses into the blood, while carbon dioxide from the blood diffuses into the alveoli to be exhaled.

Front

What is the role of the bronchi in the respiratory system?

Back

To carry air from the trachea to the lungs, branching into smaller bronchioles.