Muscles Chapter 6

25 cards

Chapter 6 Flashcards 1


 
  
Created Dec 8, 2008
by
juliechristiansen

 

 
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  Side A   Side B
1
Name the 3 types of muscle tissue.
 
Cardiac Smooth Striated
2
Which muscle cells are elongated & what are they called?
 
Skeletal & Smooth They are called muscle fibers
3
What prefixes indicate a muscle is being referred to (medical terminology)
 
Mys & myo = "muscle" sarco = "flesh"
4
Which muscle fibers are cigar-shaped, multinucleate and makeup the largest of muscle fiber...
 
Skeletal
5
What are skeletal muscles attached to?
 
Bones, skin and some facial muscles
6
What are cardiac muscles attached to?
 
Walls of the heart
7
What are smooth muscles attached to?
 
Mostly in the walls of hollow (visceral) organs (other than the heart). ex. stomach, bladder,...
8
What is the cell shape and appearance of skeletal muscles?
 
single, very long cylindrical multinucleate cells obvious striations
9
What is the cell shape and appearance of smooth muscles?
 
single fusiform uninucleate no striations
10
What is the cell shape and appearance of cardiac muscles?
 
branching chains of cells uninucleate intercalated discs striations
11
Which muscle type is considered "voluntary"
 
Skeletal; it is the only muscle type subject to conscious control
12
Each muscle fiber is enclosed in a delicate connective tissue sheath called what?
 
Endomysium
13
What covering surrounds several sheated endomysium?
 
Perimysium
14
the perimysium form a bundle of fibers called what?
 
Fascicle
15
Many fascicles makeup what is called...
 
The epimysium, a connective tissue that covers the entire muscle
16
epimysia blend into strong, cordlike....
 
Tendons
17
sheetlike tendons are called what
 
Aponeuroses
18
T/F cardiac muscle is found in many areas of the body.
 
False; cardiac muscle is found only in the heart.
19
Name the four important roles muscles play in the body
 
Produces movement maintains posture stabilizes joints generates heat
20
What is it called when a muscle is stimulated so rapidly that no evidence of relaxation is...
 
Muscle twitch
21
what energy source is used directly to power muscle activity
 
ATP
22
How many seconds worth of time does the muscle store in ATP
 
4-6 seconds; therefore ATP must be regenerated continuously if contraction is to continue
23
What is the name of the other unique high energy molecule called that is found in muscle fibers...
 
Creatine Phosphate
24
When does muscle fatigue occur?
 
When a muscle is unable to contract even though it is still being stimulated. Without rest...
25
Muscle fatigue is believed to be a result of what?
 
Oxygen debt. A person is not able to take in oxygen fast enough to keep the muscles supplied...

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