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Exam 10: Muscle Tissue and Organization

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Question 41

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The top long distance runners probably have _______ proportion of slow muscle fibers in their leg muscles.

A) a higher
B) a lower
C) the same

D) B) and C)
E) A) and B)

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Question 42

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On a muscle fiber,the two terminal cisternae and the centrally placed T-tubule form a structure called a ______________.

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Question 43

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The most common type of pennate muscle configuration is

The enzyme _____________ resides in the synaptic cleft and breaks down molecules of Ach.

In the resting stage,a muscle with the word "rectus" in its name has straight fascicles.

The calcium ions involved in skeletal muscle contraction bind to a(n) ______ subunit.

Which are the reservoirs that store the calcium required for muscle contraction?

A motor unit consists of A: A single motor neuron B: Neuromuscular junctions C: Muscle fibers D: Several motor neurons E: A single muscle fiber

The ability of a contracted muscle to recoil to its resting length when the applied tension is removed is called _______________.

In the hierarchy of skeletal muscle fiber components,the myofibril is made up of myofilaments.

The type of muscle fibers that have only a single nucleus,both thick and thin filaments,but no Z discs,are

A fan-shaped muscle that exerts a point-focused contraction force is a _______________ muscle.

When muscle tension is greater than the resistance (weight) ,movement ______ occur.

During skeletal muscle contraction,more force is created when more motor units are activated.

The number of satellite cells in skeletal muscle steadily decreases with age.

Skeletal muscles are the only locations in the body where muscle tissue is found.

Which is the correct order of the connective tissue layers of a skeletal muscle,beginning with the outermost first? A: Endomysium B: Epimysium C: Perimysium

The fat and connective tissue that encircle a beef steak form the endomysium.

Which contraction occurs when you try (unsuccessfully) to move a wall?

A circular muscle band that contracts at an orifice is also known as a _______________.