1. Which of the following structures is responsible for

maintaining the shape and protecting the internal organs of

the human body?

a) Muscular system

b) Skeletal system

c) Respiratory system

d) Nervous system

Answer: b) Skeletal system

Rationale: The skeletal system is responsible for providing

support, protection, and shape to the human body. It

includes bones, cartilage, ligaments, and tendons.

2. The primary function of the circulatory system is to:

a) Facilitate gas exchange in the lungs

b) Coordinate body movements

c) Transport oxygen and nutrients to the body cells

d) Regulate body temperature

Answer: c) Transport oxygen and nutrients to the body

cells

Rationale: The circulatory system consists of the heart,

blood vessels, and blood. Its main function is to transport

oxygen, nutrients, hormones, and waste products

throughout the body.

3. Which of the following structures is responsible for

filtering waste products from the blood?