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Q: Smooth muscle cannot be controlled consciously and thus acts ________. A. Involuntarily B. Voluntarily C. Under the control of the peripheral nervous system D. None of the above
A: A. Involuntarily
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User: Smooth muscle cannot be controlled consciously and thus acts ________. A. Involuntarily B. Voluntarily C. Under the control of the peripheral nervous system D. None of the above

Weegy: A. Involuntarily
MrG|Points 1109|

User: How is cardiac muscle similar to smooth muscle? A. Both are striated B. They share no similarities C. They share no differences D. Both have one central nucleus

Weegy: A. Both are striated
taben29|Points 777|

User: There are ________ of muscles that are responsible for chewing movements or mastication. A. Two pairs B. Three pairs C. Four pairs D. Five pairs

Weegy: There are C. Four pairs of muscles that are responsible for chewing movements or mastication.
patmarone|Points 6088|

User: The ________ muscle mass belongs to the posterior group? A. Smallest B. Largest C. Most dense D. None of the above

Weegy: B. Largest
patmarone|Points 6088|

User: Nearly ________ of the heat produced in the body is the result of muscle contraction. A. 55 percent B. 65 percent C. 75 percent D. 85 percent

Weegy: D. 85%
Pinkygrl1183|Points 740|

User: Skeletal muscles have an abundant supply of ________. A. Tendons B. Bones and cells C. Blood vessels and nerves D. All of the above

Weegy: The answer is A and C. Skeletal muscle is a form of striated muscle tissue existing under control of the somatic nervous system, that is, it is voluntarily controlled. It is one of three major muscle types, the others being cardiac and smooth muscle. [ As their name suggests, most skeletal muscles are attached to bones by bundles of collagen fibers known as tendons. Skeletal muscle is made up of individual components known as myocytes, or "muscle cells", sometimes colloquially called "muscle fibers". They are formed from the fusion of developmental myoblasts (a type of embryonic progenitor cell that gives rise to a muscle cell). These long, cylindrical, multinucleated cells are composed of myofibrils. The myofibers are in turn composed of myofibrils. The myofibrils are composed of actin and myosin myofibrils repeated as a sarcomere, the basic functional unit of the muscle fiber and responsible for skeletal muscle's striated appearance and forming the basic machinery necessary for muscle contraction. The term muscle refers to multiple bundles of muscle fibers held together by connective tissue. ]
bongche|Points 3085|

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Asked 9/9/2012 1:17:31 PM
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