U3 S10

breaks down food into nutrients that can be used by the body. The stomach breaks down food into tiny pieces. Nutrients are absorbed in the small intestine.

work together, share organs, and communicate.

chemical messages from the endocrine system and cells from the lymphatic and cardiovascular systems.

electrical messages and chemical messages.

Nerve cells transfer information between the body and the spinal cord and brain. Nerves mass electrical messages from one cell to the next along the line.

The endocrine system sends chemical messages through the bloodstream to certain cells.

hormones to prepare the body for action.

send electrical messages to the brain.

blood from the lungs to the body. The muscles use oxygen from the blood to keep moving.

The maintenance of a constant environment when outside conditions change. Responding to change allows all systems to work properly.