Digestive, Respiratory, and Circulatory Systems Flashcard

Front

What organ begins the process of chemical digestion through the release of enzymes?

Back

Salivary glands

Front

Which part of the digestive system is the longest?

Back

Small intestine

Front

What are alveoli?

Back

Alveoli are tiny air sacs in the lungs that are the site of gas exchange.

Front

What type of blood vessels carry blood away from the heart?

Back

Arteries

Front

Why does breathing rate increase during exercise?

Back

The body needs more oxygen.

Front

What is the primary function of the digestive system?

Back

To break down food into nutrients that the body can use.

Front

What is the role of the stomach in digestion?

Back

The stomach mixes food with digestive juices and begins the digestion of proteins.

Front

What is the function of capillaries?

Back

Capillaries are small blood vessels where the exchange of oxygen, carbon dioxide, nutrients, and waste occurs.

Front

What is the main purpose of the respiratory system?

Back

To facilitate the exchange of oxygen and carbon dioxide between the body and the environment.

Front

What is the function of the large intestine?

Back

The large intestine absorbs water and forms waste products (feces) for elimination.