Arm

High school (ages 12+)
Human Body

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/arm

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the muscular actuation?Over 30 skeletal muscles, controlled by the nervous system, enable arm movement
2. What is the neuromuscular control?Motor cortex, cerebellum, and basal ganglia coordinate voluntary and involuntary arm movements
3. What parts make up the human arm?The arm has a shoulder, a humerus bone in the upper arm, two bones in the forearm called the radius and ulna, and the hand. The shoulder joint is like a ball-and-socket, the elbow is a hinge, and the wrist can twist.
4. How do our arms move so many ways?More than 30 muscles pull on the bones with tendons, and nerves send signals from the brain to the muscles. The shoulder can move a lot, and the wrist lets us turn our hand.

Brachiation: A form of arboreal locomotion in which primates swing from tree to tree using their arms.
Proprioception: The sense of the relative position of one's own parts of the body and strength of effort being employed in movement.
Brain-Computer Interface (BCI): A system that allows direct communication pathways between a brain and an external device.