Muscular Tissue Flashcards
What is an example of a disease where the muscules are erratic and there is loss of control over body movements?
Huntington’s Disease
In relation to movement, what are the specific kinds of movement which muscular tissue has control over?
1) skeltal movement
2) organ movement
3) prevention of unwanted movements
4) heat production
What process occurs when a muscle takes up a major part of one’s blood glucose after a meal? This plays a substantial role in regulating glucose levels.
Normoglycemia
Muscles store which kind of monosacchiride?
glycogen
Which kind of muscle tissue is striated and voluntary?
skeletal muscle
The expression of “musclar system” refers to only which kind of muscle tissue?
skeletal muscle
Which kind of muscle tissue is striated and involuntary?
cardiac muscle
Which kind of muscle tissue is only part of the circulatory system?
cardiac muscle
Which kind of muscle tissue is non-striated and involuntary?
smooth muscle
Which kind of muscle tissue is found in many organ systems such as: circulatory, respiratory, reproductive, digestive, etc.?
smooth muscle
A ____ is an individual cell of skeletal muscle. They are called this because they are long, slender, threadlike cells.
muscle fibers
Each muscle fiber is enclosed in a thin sleeve of reticular connective tissue, which allows nerve fibers and blood capillaries to reach it and which furnishes the extracellular chemical environment (electrolytes) for muscle excitation. This also provides end-to-end mechanical connectivity, because few muscle fibers extend for the whole length of a muscle. What is this called?
endomysium
A ____ is a bundles of muscle fibers enclosed in a thicker connective tissue sheath, the perimysium.
fascicle
What is a layer of fibrous connective tissue, that is thicker than the endomysium, surrounding each fascicle and seperating it from others? It is well endowed with blood vessels.
perimysium
What is a layer of dense irregular connective tissue that covers the muscle as a whole, seperating it from neighboring muscles?
epimysium
A ____ is a sheet of connective tissue between adjacent muscles or between muscles and skin.
fascia
Which two structures of skeltal muscle grade into each other with no distinctly identifiable boundary between the two?
epimysium and fascia
Each skeleltal muscle fiber forms by the fusion of multiple embryonic cells called ____.
myoblasts
Skeletal muscle can be identified in ____ sections as having parallel, straight-side cells.
longitudinal
Skeletal muscle can be identified in ____ sections as having polygonal, angular cells.
cross
Why does skeletal muscle look faintly stippled in cross sections?
internal myofibrils
What is structure #1 in the muscle fiber below?
sarcolemma
not done
What is structure #2 in the muscle fiber below?
nuclei
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What is structure #3 in the muscle fiber below?
sarcoplasm
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What is structure #4 in the muscle fiber below?
transverse (T) tubules
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What is structure #5 in the muscle fiber below?
myofibrils
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What is structure #6 in the muscle fiber below?
sarcoplasmic reticulum
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What is structure #7 in the muscle fiber below?
terminal cisternae