6.4 Organs

Question 1

What is an organ?

Answer 1

Collection of tissues adapted to perform a particular function in an organism

Question 2

What is an organ system?

Answer 2

A group of organs working together to carry out major functions in the body

Question 3

What are 3 examples of organ systems in animals?

Answer 3

1. Digestive
2. Cardiovascular
3. Gas exchange

Question 4

What does the digestive system do? What is its function?

Answer 4

Takes in food.

• Breaks down large insoluble molecules into smaller soluble ones
• Absorbs nutrients into the blood
• Retains water needed by the body
• Removes undigested material from the body

Question 5

What does the cardiovascular system do? What is its function?

Answer 5

Moves blood around the body - To provide an effective transport system for the substances it carries

Question 6

What does the gaseous exchange system do? What is its function?

Answer 6

Brings air into the body so oxygen can be extracted for respiration and CO2 can be expelled