What is the primary characteristic used to differentiate between skeletal, cardiac, and smooth muscle tissues under a microscope, as discussed in the video?

The presence or absence of striations and intercalated discs.

Describe the appearance of cardiac muscle tissue under a microscope, mentioning the key features that distinguish it from skeletal and smooth muscle.

Cardiac muscle has striations and intercalated discs, and it also has a branched appearance.

What microscopic features are absent in smooth muscle tissue that are present in both skeletal and cardiac muscle tissues?

Striations and intercalated discs.

Explain why observing multiple samples of each muscle type side-by-side can be helpful in learning to differentiate them.

Comparing multiple samples allows for a better understanding of the range of variation within each muscle type and highlights the key distinguishing features.

Microscopic Views of Skin, Bone, and Muscle

7th GradeScience40 min

Learning Objective

I can describe and distinguish skin, bone, and muscle tissues under a microscope.

Lesson Flow

Watch Video

5 min

Identifying Muscle | Review and Practice

Anatomy Hero

Guided Notes

8 min

Key concepts students will learn:

•
Striations, or light and dark stripes, are clearly visible in skeletal muscle.
•
Intercalated discs are only found in cardiac muscle, which also has a branched appearance.
•
Smooth muscle has neither striations nor intercalated discs.

Practice

12 min

8 questions • Multiple choice & Short answer

Exit Ticket

5 min

“Describe two key differences between skeletal muscle and cardiac muscle as viewed under a microscope.”

Teacher Guide

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

Microscopic Views of Skin, Bone, and Muscle

Learning Objective

Lesson Flow

Watch Video

Guided Notes

Practice

Exit Ticket

Teacher Guide

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