Chapter 10 study guide intro muscles Flashcards
1
Q
1
A
Thin Filament
2
Q
2
A
Thick Filament
3
Q
3
A
Z disc
4
Q
4
A
H zone
5
Q
6
A
I band
6
Q
7
A
A band
7
Q
8
A
M line
8
Q
muscle types
A
skeletal
cardiac
smooth
9
Q
skeletal muscle
A
voluntary
striated
attached to bones
multi-nucleated
10
Q
cardiac muscle
A
involuntary
striated
intercolated discs
11
Q
smooth muscle
A
involuntary
nonstriated
cells fusiform in shape
12
Q
muscle tissue funtions
A
movement
stability of body
control of passages and openings
heat production
glycemic control
13
Q
muscle properties
A
excitability
conductivity
contractility
extensibility
elasticity
14
Q
muscle structure
1
A
fascia
15
Q
muscle structure
2
A
epimysium
16
Q
muscle structure
3
A
perimysium
17
Q
muscle structure
4
A
fascicles
18
Q
muscle structure
5
A
endomysium
19
Q
muscle structure
6
A
muscle fiber
20
Q
muscle fiber
1
A
Nucleus
21
Q
muscle fiber
2
A
Mitochondria
22
Q
muscle fiber
3
A
myofibrils
23
Q
muscle fiber
4
A
myofilaments
24
Q
muslce fiber
5
A
Sarcolemma
25
muscle fiber
6
transverse tubule
26
muscle fiber
7
transverse cisternae
27
muscle fiber
8
sarcoplasmic reticulum
28
muslce to bone attachments
indirect
direct
29
indirect attachment
attach via fibrous tendons
30
direct attachment
muscle fibers extend nearly to bone surface and muscle fibers connect directly to periosteum
31
muscle groups
prime movers
synergist
antagonist
fixator
32
prime movers
muscle that produces the most force
33
synergists
muscles that assist prime mover
34
antagonist
muscle that opposes prime mover
35
fixator
muscle that holds bone still
36
intrinsic muscles
boht origin and insertion are within specified region
head
hand
37
extrinsic muscles
origin is outside of the region
insertion is in the region of movement
38
stiations of muscle
due to the arrangement of bands within the sarcomere
39
motor neuron relationship
connection is the neuromuscular junction
nerve impulse causes muscle contraction
by release of acetylcholine
40
neuromuscular junction
synaptic knob nestles in depression of the sarcolemma
the synaptic cleft separates the to from actual contact
41
motor unit
single nerve fiber and all muscle fibers innervated by it
42
motor unit significance
allows precise control over muscle contractoin to allow just enough contraction to perform the task
43
