Physical strength

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/physical-strength

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. How long is Physical strength?Muscle hypertrophy (increased fiber size) becomes a major contributor to strength increases
2. What is the primary force generators?Skeletal muscles acting as biological actuators through actin-myosin interaction
3. How do muscles make us strong?Muscles work like tiny machines. When nerves send signals, the muscle fibers slide together, shortening and creating tension that moves our bones.
4. Why did our ancestors need to be strong?Early humans used strength to hunt animals, protect family, and climb difficult places, so stronger people had better chances to survive.

Neuromuscular system: The interconnected network of nerves and muscles that control movement and force production.
Muscle hypertrophy: The increase in the size of muscle fibers, leading to greater muscle mass and strength.
Sarcopenia: The age-related loss of muscle mass, strength, and function.