science 8 xxx

What is the primary function of the small intestine in the digestive system?

Absorbs nutrients.

The pathway of food through the digestive system starts at the __________.

Mouth

Mouth, Esophagus, Stomach, Small Intestine, Large Intestine, Rectum, Anus represents what process?

Pathway of food in the digestive system.

What organ is the site of gas exchange in the respiratory system?

Lungs

In the lungs, oxygen moves into the blood by a process called __________.

Diffusion

The role of the respiratory system includes providing __________ and removing carbon dioxide.

Oxygen

What is the role of the large intestine?

Absorbs water and forms waste.

Nose/Mouth → Trachea → Bronchi → Lungs → Alveoli represents what pathway?

Pathway of air in the respiratory system.

What was a major difference in public perception of smoking in the 1950s compared to today?

Smoking was accepted due to a lack of knowledge about health risks.

What do alveoli exchange with the bloodstream?

Oxygen and carbon dioxide.

The __________ stores waste until it is excreted from the body.

Rectum

What is the function of the trachea?

Transports air.

The __________ begins the process of digestion.

Mouth

What is the main purpose of the digestive system?

Breaks down food for energy and nutrients.

Diffusion in the intestines allows __________ to move into the bloodstream.

Nutrients

The anus is responsible for __________ waste from the body.

Excreting