What are the three main types of muscle tissue in the human body?

Skeletal muscle, cardiac muscle, and smooth muscle.

Explain the roles of biceps and triceps muscles when bending and straightening the arm.

The biceps shorten to bend the arm, while the triceps lengthen. To straighten the arm, the relationship reverses: the triceps shorten and the biceps lengthen.

What is the function of the stapedius muscle, and where is it located?

The stapedius is the body's tiniest skeletal muscle. It is located deep inside the ear.

Differentiate between fast-twitch and slow-twitch muscle fibers in terms of their function and energy usage.

Fast-twitch fibers react quickly but tire out rapidly, while slow-twitch fibers react and use energy slowly, allowing them to work for longer periods.

Exploring the Muscle System

9th GradePE60 min

aligned to General Standard 1

Learning Objective

I can identify the major muscles in the human body and their functions.

Lesson Flow

Watch Video

5 min

How your muscular system works - Emma Bryce

TED-Ed

Guided Notes

12 min

Key concepts students will learn:

•
The muscular system is composed of three main muscle types: skeletal, cardiac, and smooth.
•
Fast-twitch muscle fibers react quickly but tire easily, while slow-twitch fibers are endurance cells that work for longer periods.
•
The autonomic nervous system controls cardiac and smooth muscles, while the somatic nervous system controls skeletal muscles.

Practice

18 min

12 questions • Multiple choice & Short answer

Exit Ticket

5 min

“Name two skeletal muscles mentioned in the video and describe their functions.”

Teacher Guide

Get the complete package:

Answer keys for all questions
Differentiation strategies
Extension activities
Printable student handouts

Exploring the Muscle System

Learning Objective

Lesson Flow

Watch Video

Guided Notes

Practice

Exit Ticket

Teacher Guide

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