Human Body Systems- OL (flashcard #2)

Front

What is the main function of the digestive system?

Back

The main function of the digestive system is to break down food into molecules (nutrients) that the body can use.

Front

What is chemical digestion?

Back

Chemical digestion is the type of digestion that occurs when chemicals are used to break down foods into substances that can be absorbed by the body.

Front

Name the major organs of the respiratory system.

Back

The major organs of the respiratory system include the lungs, trachea, nose, and mouth.

Front

What are involuntary muscles?

Back

Involuntary muscles are muscles that cannot be controlled consciously, such as the muscles that control the heartbeat.

Front

Which system do the lungs belong to?

Back

The lungs are part of the respiratory system.

Front

What is the role of the stomach in digestion?

Back

The stomach plays a key role in digestion by mixing food with digestive juices and breaking it down into a semi-liquid form.

Front

What is the difference between mechanical and chemical digestion?

Back

Mechanical digestion involves physically breaking down food into smaller pieces, while chemical digestion involves breaking down food into nutrients using enzymes and acids.

Front

What is the function of the trachea?

Back

The trachea, or windpipe, is responsible for transporting air to and from the lungs.

Front

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

Back

The diaphragm is a muscle that helps in breathing by contracting and relaxing to allow air to enter and exit the lungs.

Front

What are nutrients?

Back

Nutrients are substances that provide nourishment essential for the maintenance of life and for growth.