Pre-lab questions 1. Why do we not feel the movement of our stomach? 2. Why do muscles need lots of blood supply? Explain.

Methods and Materials:

microscope, labeled micro preparations of muscle cells

Procedures:

1. Observe micro preparations under low magnification

Observe micro preparations under high magnification and draw what you 3 Compare different tissues and discuss it with your friends.

Results:

Micro preparation no

2

3

Safety precautions

1. Before using microscope read instructions.

2. Call teacher if you break microscope slide, do not touch it.

Postlab questions

1. Match numbers with muscle types. Explain your answer. 2. why do skeletal muscle fibers have many nuclei?

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