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| 1 | |
Which of the following is/are considered a function(s) of the muscles? |
| | A) | allows for body movement |
| | B) | protect internal organs and stabilize joints |
| | C) | maintain constant body temperature |
| | D) | assists movement of lymph in lymphatic vessels |
| | E) | All of the above statements are correct. |
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| 2 | |
Identify the basic type or types of muscle tissue. |
| | A) | cardiac |
| | B) | skeletal |
| | C) | smooth |
| | D) | All of these are correct. |
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| 3 | |
_________ is stored in the expanded portions of the sarcoplasmic reticulum. |
| | A) | Carbonate |
| | B) | Calcium |
| | C) | Phosphate |
| | D) | Sodium |
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| 4 | |
In muscle activity, creatine phosphate can be ___________. |
| | A) | used in the reaction: actin + myosin = actomyosin |
| | B) | used to change ADP to ATP |
| | C) | a molecule found in DNA |
| | D) | all of the above |
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| 5 | |
Which of the following is not a disease of the muscular system. |
| | A) | muscular dystrophy |
| | B) | Lou Gehrigs disease |
| | C) | fibromyalgia |
| | D) | cystic fibrosis |
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| 6 | |
In cardiac muscle, ________________ are branching fibers that are important in permitting contractions of the heart muscle to spread quickly. |
| | A) | polyps |
| | B) | Purkinje fibers |
| | C) | intercalated discs |
| | D) | Haversian canals |
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| 7 | |
_____________ is commonly called voluntary muscle. |
| | A) | Smooth muscle |
| | B) | Cardiac muscle |
| | C) | Skeletal muscle |
| | D) | All of these are under conscious control. |
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| 8 | |
_________ is slower to contract than skeletal muscle but is capable of sustained prolonged contractions and does not fatigue easily. |
| | A) | Smooth muscle |
| | B) | Cardiac muscle |
| | C) | Skeletal muscle |
| | D) | All of these are under conscious control. |
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| 9 | |
The end of the muscle that is attached to the stationary bone is called the _____. |
| | A) | origin |
| | B) | insertion |
| | C) | fascia |
| | D) | antagonist |
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| 10 | |
When a group of muscles moves a body part, the muscle that does the most work is called the _____. |
| | A) | antagonist |
| | B) | prime mover |
| | C) | synergist |
| | D) | contractor |
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| 11 | |
A muscle which opposes the action of another muscle is called the |
| | A) | antagonist. |
| | B) | prime mover. |
| | C) | synergist. |
| | D) | fascicle. |
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| 12 | |
Which is the correct pairing of the muscle name to its descriptor? |
| | A) | maximus; largest muscle |
| | B) | deltoid; triangular shape |
| | C) | frontalis; location on frontal bone |
| | D) | All of the choices are correct. |
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| 13 | |
Skeletal muscles are usually named on the basis of _____. |
| | A) | shape, size, or action |
| | B) | direction of fibers |
| | C) | number of attachments |
| | D) | All of the above. |
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| 14 | |
In a muscle fiber, the sarcolemma forms the _______. |
| | A) | S tubules |
| | B) | L tubules |
| | C) | T tubules |
| | D) | sarcoplasmic reticulum |
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| 15 | |
The sarcomere extends between two dark lines called the ________ lines. |
| | A) | Q |
| | B) | Z |
| | C) | T |
| | D) | R |
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| 16 | |
The light bands in skeletal muscle are composed of ______ and the dark bands are composed of _____. |
| | A) | troponin, tropomysin |
| | B) | actin, myosin |
| | C) | myosin, actin |
| | D) | tropomysin, troponin |
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| 17 | |
According to the sliding filament theory, myosin filaments pull actin filaments by means of ___. |
| | A) | cross-bridges |
| | B) | active transport |
| | C) | passive transport |
| | D) | expansion |
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| 18 | |
_________ is a neurotransmitter that triggers muscle contraction. |
| | A) | Myosin |
| | B) | Tropomyosin |
| | C) | Troponin |
| | D) | Acetylcholine |
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| 19 | |
Muscle tension summates until maximal sustained contraction, called ________, is achieved. |
| | A) | a twitch |
| | B) | fusion |
| | C) | tetanus |
| | D) | fatigue |
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| 20 | |
During strenuous exercise, the muscles use fermentation to supply their energy needs and thus incur a(n) ______. |
| | A) | oxygen dept |
| | B) | cell respiration deficiency |
| | C) | energy dept |
| | D) | lactate shortage |
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