Mucles Flashcards

0
Q

What do cardiac muscle and skeletal muscle have in common?

A

Both are striated with light and dark bands and have elongated cells.

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1
Q

What is the difference between cardiac muscle and skeletal muscle?

A

Cardiac muscle is only found in the heart. Skeletal muscle is found in the limbs, trunk, head, and neck. Cardiac muscle only has one or two nuclei in a cell centrally located. Skeletal muscle has multiple nuclei lying along the periphery of the cells.

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2
Q

What makes up the A band?

A

Actin and myosin

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3
Q

What makes up the I band?

A

Only actin filaments

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4
Q

What is the function of the sarcoplasmic reticulum?

A

Stores and releases calcium that is needed for cross bridge formation

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5
Q

What are the three ways in which a skeletal muscle can differ from another?

A

1) . Types: Slow twitch, fatigue fast twitch resistant, fast twitch fatiguable
2) . Size of PCSA (physiological cross sectional area)
3) . Arrangement: parallel, unipinnate, bipinnate, multipinnate

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6
Q

What are the things common to all skeletal muscle tissue? …

A

Skeletal-voluntary muscles attached to skeletal elements and cartilage.

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