QUIZ CHAPTER 21-LIFE SCIENCE

Select the two body systems that help us to obtain energy in our body.

• digestive system

• skeletal system

• respiratory system

• integumentary system

The respiratory system functions in gas exchange, these gases are carbon dioxide and ______.

TRUE OR FALSE.

Breathing is the process of inhaling and exhaling air.

• TRUE

• FALSE

The structures in the lungs that provide oxygen to the blood are called?

• alveoli

• bronchioles

• diaphragm

• trachea

The muscle that contracts and relaxes to enable breathing is called:

• bicep

• deltoid

• diaphragm

• stomach

Select the example of accessory organ of the digestive system:

• small intestine

• liver

• stomach

• esophagus

The alimentary canal, that are the organs where food passes through, has ___ meters long.

• 8

• 2

• 9

• 1

The type of teeth that are strong and pointed for tearing food.

• canines

• molars

• premolars

• incisors

ABSORPTION of nutrients from food takes place in this organ by fingerlike structures called villi.

• large intestine

• pancreas

• esophagus

• small intestine.

Food is moved along the alimenrary canal by a force called ___________, a types of muscular contraction.

• friction

• peristalsis

• gravity

• muscular