Term
| The return of a contracted muscle fiber to its resting length is an active (energy requiring) process. |
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Definition
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Term
| Which is the neurotransmitter that causes the release of calcium ions and initiates the steps of skeletal muscle fiber contraction? |
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Definition
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Term
| A muscle whose name has "triceps" in it |
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Definition
| has three muscle heads or tendons of origin. |
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Term
| The type of fibers specialized to continue contracting for extended periods of time are |
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Definition
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Term
| The fascicles of a pennate muscle are at an oblique angle to the tendons. |
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Definition
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Term
| Which is a correct listing of the hierarchy of a skeletal muscle's components, beginning with the smallest? |
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Definition
a: Myofibrils
b: Muscle fiber
c: Fascicle
d: Skeletal muscle |
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Term
| The embryonic-like cells that remain in adult skeletal muscle tissue are known as satellite cells. |
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Definition
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Term
| Which of the following best fills in the blank:? There is/are ______ sarcomeres in each myofibril. |
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Definition
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Term
| The agonist is the muscle that contracts to produce a desired movement. |
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Definition
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Term
| Using the mandible to close your mouth as you bite on food is an example of a _________. |
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Definition
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Term
| Which are the reservoirs that store the calcium required for muscle contraction? |
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Definition
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Term
| The fat and connective tissue that encircle a beefsteak is the endomysium. |
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Definition
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Term
| Interestingly, muscle tissue is found in areas besides the skeletal muscles. |
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Definition
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Term
| A muscle whose name has "orbicularis" in it is _______ in appearance. |
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Definition
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Term
| Generally, a skeletal muscle is composed of |
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Definition
a: connective tissue sheaths.
b: nerves.
c: arteries.
d: veins.
e: muscle fibers. |
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Term
| When a muscle is isometrically contracted, its length _______ change. |
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Definition
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Term
| Which is the correct order of the connective tissue layers of a skeletal muscle, beginning with the outermost first? |
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Definition
b: Epimysium
c: Perimysium
a: Endomysium |
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Term
| Second-class levers are the most common in the human body. |
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Definition
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Term
| The type of lever with the fulcrum in the middle is |
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Definition
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Term
| The multiple nuclei in skeletal muscle cells are the result of |
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Definition
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Term
| Slow fibers are specialized to continue contracting for extended periods of time without experiencing fatigue. |
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Definition
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Term
| Which are considered specific characteristics of all muscle cells? |
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Definition
a: Contractility
b: Extensibility
c: Excitability
d: Elasticity |
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Term
| Parallel muscles will pull _______ than pennate muscles of the same size. |
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Definition
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Term
| In the resting stage, a muscle with the word rectus in its name always has straight fascicles. |
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Definition
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Term
| Which contraction occurs when you try to move a wall? |
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Definition
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Term
| The type of fibers specialized to continue contracting for extended periods of time are |
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Definition
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Term
| A muscle whose name has "profundus" in it is located |
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Definition
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Term
| In the hierarchy of skeletal muscle fiber components, the myofibril is made up of myofilaments. |
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Definition
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Term
| The primary function of the abdominal muscles is not to bend, but rather to hold the abdominal organs in place. |
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Definition
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Term
| Fast fibers fatigue ______. |
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Definition
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Term
| In the human body the synovial joint between two bones always serves as the fulcrum of the lever. |
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Definition
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Term
| The biceps brachii is an example of a ________ muscle. |
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Definition
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Term
| Which structures are reservoirs that store acetylcholine? |
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Definition
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Term
| A sarcomere is defined as the distance from one _____ to the next adjacent ____ . (The same answer fills in both spaces.) |
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Definition
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Term
| A muscle whose name has "pollicis" in it is located |
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Definition
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Term
| The type of muscle fibers that are striated, form Y-shaped branches, and have junctions called intercalated discs are |
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Definition
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Term
| When a muscle is isometrically contracted, its length _______ change. |
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Definition
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Term
| The agonist is the muscle that contracts to produce a desired movement. |
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Definition
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Term
| The return of a contracted muscle fiber to its resting length is an active (energy requiring) process. |
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Definition
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Term
| Which apply to synergist muscles? |
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Definition
a: Assist the agonist
c: May stabilize the point of origin
d: May contribute to tension at the insertion site |
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Term
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Definition
a: a single motor neuron.
b: neuromuscular junctions.
c: muscle fibers. |
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Term
| Smooth muscle tissue is found in such places as the organs of the digestive tract, the walls of blood vessels, and the iris. |
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Definition
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Term
| When muscle tension is greater than the resistance (weight), movement ______ occur. |
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Definition
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Term
| The type of muscle fibers that have only a single nucleus, both thick and thin filaments, but no Z discs, are |
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Definition
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Term
| Interestingly, muscle tissue is found in areas besides the skeletal muscles. |
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Definition
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Term
| During skeletal muscle contraction more force is created when more motor units are activated. |
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Definition
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Term
| Parallel muscles exhibit great strength but little endurance. |
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Definition
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Term
| The tension produced by a muscle fiber is directly proportional to the number of sarcomeres it contains. |
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Definition
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