Lesson 8 of 8
Lesson 8: Human Body Systems
Your body is made of organ systems that each do a job and work together to keep you alive. Here is the quick tour.
- ●Skeletal: bones that support the body and protect organs
- ●Muscular: muscles that move the body and pump the heart
- ●Circulatory: heart and blood vessels that carry oxygen and nutrients
- ●Respiratory: lungs that take in oxygen and remove carbon dioxide
- ●Digestive: breaks down food into nutrients your cells can use
- ●Nervous: brain, spinal cord, and nerves that send signals and control the body
- ●Endocrine: glands that release hormones to regulate the body
- ●Excretory: kidneys that filter waste out of the blood
- ●Immune: defends the body against germs and disease
- ●Reproductive: makes offspring
REMEMBER
No system works alone. For example, the respiratory system grabs oxygen and the circulatory system delivers it, so your muscles can keep working.
ON THE TEST
Be ready to match a system to its main job and to name one organ in it. That is the most common body-systems question.
You finished FITE Notes: Biology
Now put it to work. Get measured, get on film, get recruited.
Train with Coach Fite →