The human body is composed of several systems that work together to maintain homeostasis and perform vital functions. The circulatory system transports blood, nutrients, and oxygen to cells. The respiratory system enables breathing and gas exchange. The digestive system breaks down food to provide energy. The nervous system controls body activities and responses. The skeletal system provides structure and protection.

1. Which system is responsible for transporting nutrients?

2. Describe the primary function of the respiratory system.

3. How does the nervous system contribute to body control?

1. Which age group has the highest average resting heart rate?

2. Calculate the difference in heart rate between children and adults.

3. Why might heart rates differ between age groups?

Word bank: oxygen, blood, lungs, heart

1. The circulatory system includes the ___, which pumps ___ throughout the body.

2. The respiratory system involves the ___, which help in exchanging ___ with the environment.

Explain the importance of the skeletal system in maintaining body structure and facilitating movement. Discuss how it interacts with the muscular and circulatory systems. [10 marks]

1. The ___ system is responsible for breaking down food.

2. The ___ system controls voluntary and involuntary actions.

3. The ___ system protects internal organs and supports the body.

The nervous system is a complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body. It is responsible for coordinating voluntary and involuntary actions and transmitting signals between different body parts.

1. What is the primary function of the nervous system?

2. How does the nervous system communicate with the rest of the body?