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describe the large fleshy portion of muscle (lies between point of attachment)


touch connective tissue, forms layers around muscle


outer layer of fascia; extend either down and up muscle fiber to end points and attach to bone and form a tendon


second layer; surrounds smaller bundles of muscle fibers (fascicles)


bone to bone


muscle to bone


individual muscle fiber; third layer of connective tissue that surrounds the fascicles (in the perimysium)


meaning little mouse; movements of muscle under skin looked like little mouse

types of muscles

skeletal, smooth & cardiac

compartment syndrome

"crush syndrome"; when compartment is deprived of oxygen and nourishment, the muscle and nerves begin to die


flat, sheetlike fascia, connects muscle to muscle or muscle to bone; third type of connection

Which of the following "slides" in the sliding filament hypothesis?

actin and myosin

Which of the following is not true of a somatic motor neuron?

It is located within each sarcomere

The somatic motor nerve that supplies the muscles of the thigh has been severed. The person.

cannot walk

Which of the following causes the force-generating crossbridges?

the binding of the myosin head to actin

Compartment syndrome is serious because it

deprives the muscle of oxygen.

The biceps brachii, brachioradialis, and brachialis muscles

flex the forearm at the elbow

As the electrical signal travels through the T tubules, it causes the

release of calcium from the sarcoplasmic reticulum

Contraction of the right sternocleidomastoid muscle

rotates the head to the left.

Which of the following is not true of the chewing muscles?

They cannot tetanize.

Creatine phosphate

is an energy source for muscle contraction

Which of the following is least related to actin and myosin?

found in skeletal muscle, but not in smooth and cardiac muscle

Which of the following is not an event that occurs within the neuromuscular junction?

release of calcium from the sarcoplasmic reticulum

List the three types of muscles.

Skeletal smooth and cardiac

Which of the following is true of myasthenia gravis?

characterized by skeletal muscle weakness

When the muscle burns glucose anaerobically

lactic acid accumulates.

Which type of muscle requires stimulation by a somatic motor neuron?

skeletal muscle


increases the force of muscle contraction


single muscle responds to stimulus, the muscle contracts and then fully relaxes. not useful physiologically


muscle is stimulated repeatedly, muscle has no time to relax and remains contracted. sustained muscle contraction

basis for naming muscles

determined by size, shape, direction of fibers, location, number of origins, origin and insertion, and muscle action

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