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Summary Introduction to Anatomy and Physiology Fall 2023 Test 4: Muscular system Review

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2023/2024 Written for academic year
Institution Canadore College Of Applied Arts And Technology (CCAA )
Course IAP100 (IAP100)
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Review for IAP100 according to the review outline provided in class. Covers chapter 7: Muscular system.

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IAP100 Test 4: Muscular System




Know the different coverings and the names of each layer

EPIMYSIUM: Surrounds the whole bundle of muscles

PERIMYSIUM: Surrounds the muscle FASCICLES

ENDOMYSIUM: Surrounds the muscle fiber

TENDON: Muscle to bone

APONEUROSIS: Broad sheet of fibers, connects muscles to each other




Where is calcium stored?

Stored in the terminal cisternae on either side of the sarcoplasmic reticulum

What kind protein is in a thick filament?

Myosin

What kind of protein is in a thin filament?

Actin

What is a triad?

A triad consists of:

Terminal cisterna with the calcium

T-tubule

Terminal cisterna of the next sarcoplasmic reticulum

What’s in the terminal cisterna?

A high concentration of CALCIUM IONS

And

Very low CYTOSOL ( fluid portion of cytoplasm)

, What do the t tubules do?

T-tubules (transverse tubules):

allow electrical impulses from sarcoplasm to reach cell’s interior

allows unified contraction of entire fiber




What is the z- line?

Marks the boundary at each end of the sarcomere

Strands of protein (TITIN) connect the Z LINES to the thick filament to maintain alignment

What overlaps in the zone of overlap?

The zone between the thick and thin filaments and they overlap when there is muscle contraction
Connected book
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Frederic H. Martini, Edwin F. Bartholomew Essentials of Anatomy and Physiology
Publisher: 2019 ISBN: 9780135203804 Edition: Unknown

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