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20 Cards in this Set

  • Front
  • Back
Muscle's make up what percentage of your total body weight?
A.25-27%
B.90-95%
C.10-13%
D.40-50%
D.40-50%
What are the three types of muscular tissue?
1.skeletal 2.cardiac 3.smooth
What are two characteristics of skeletal muscle?
1.striated 2.voluntary
Where is the only place you can find cardiac muscle?
the heart
Cardiac muscle is characterized as being involuntary? T/F
TRUE
Cardiac muscle tissue is also characterized has a characteristic autorhythmicity? T/F
TRUE
-built in rhythm (pace-maker)
Located in the walls of hollow internal structures?
smooth muscle tissue
What are two characteristics of smooth muscle tissue?
1.nonstriated 2.involuntary
Which function(s) are provided by all three types of muscular tissue?
A.produce body movement
B.generate heat
C.storing/moving substances w/in the body
D.stabilizing body positions
C. storing and moving substances within the body-done by all 3 types-
Skeletal muscle generates what percentage of body heat?
A.10%
B.50%
C.99%
D.85%
D. 85%
An autoimmune disease that causes chronic,progressive damage of the neuromuscular junction?
myasthenia gravis
Refers to a group of inherited muscle-destroying diseases that cause progressive degeneration of skeletal muscle fibers?
muscular dystrophy
The most common form of muscular dystrophy is known as what?
Duchenne muscular dystrophy
(DMD)
A painful,nonarticular rheumatic disorder that affects the fibrous connective tissue components of muscles, tendons, and ligaments?
fibromyalgia
A sudden involuntary contraction of a single muscle in a large group of muscles?
spasm
A painful spasmodic contraction?
cramp
A spasmodic twitching made involuntarily by muscles that are ordinarily under voluntary control?
tic
-Ex.twitching of the eyelid-
A rhythmic, involuntary, purposeless contraction that produces a quivering or shaking movement?
tremor
An involuntary, brief twitch of an entire motor unit that is visible under the skin?
fasciculation
A spontaneous contraction of a single muscle fiber that is not visible under the skin?
fibrillation
-i.e heart-