The diagram above shows the two main parts of the human body’s central nervous system.

According to the diagram, which term best describes the brain?

Which is the main control center of the nervous system?

The eyes receive visual signals from the environment. This information is transmitted to the brain. Which body system does this process describe?

The protective covering of an organism, such as skin, hair and nails

A system of organs and tissues that controls and coordinates the body’s activities

The structure in the nervous system that carries messages to and from the spinal cord and brain

Keeping conditions constant inside the body as in keeping a steady body temperature

Something that makes an organism act in a certain way. This can be internal or external

Something an organism does when it senses a stimulus

A plant is shown bending towards the light. The light is known as the

The plant bending and growing towards the light is the plant's

The skin is part of the integumentary system. What is the main function of the integumentary system?

The skin eliminates waste through

Which organ produces Vitamin D for the body?