1. Identify the human body system that the following organs belong to:

Brain
Elbow
Stomach
Heart
Kidney
2. Describe how the nervous, skeletal and muscular system work together when you do exercise such as running, swimming or biking?
3. Explain how do the circulatory system and respiratory system work together to transport oxygen through your body?

4. How can an organ, such as the lungs, work for multiple body systems?

Explanation:

1. Brain: Nervous system

Elbow: Skeletal system/muscular system

Stomach: Digestive system

Heart: Circulatory system

Kidney: urinary system

2. The nervous system sends a signal to the muscular system. This allows you to move your muscles, in turn your muscles control the movement of your bones.

3. The unoxygenated blood pumps through the right side of the heart, which then moves it to the lungs. At the lungs the blood becomes oxygenated and then moves to the left side of the heart. The left side then pumps the blood to the rest of the body.

answer: c.

explanation:

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.