Flashcards in Muscles Deck (38)
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Tissue surrounding the entire muscle that separates f from
Other muscles or bones
Fasciae
1
Tissue around the entire muscle
Epimysium
2
Tissue surrounding the individual fascicals
Permits in
3
Tissue surrounding the individual muscle fiber
Endomysium
4
Adult stem cells repair damaged muscle cells
Myoblast
5
The muscle cell membrane outer most layer
Sarcolemma
6
The muscle cytoplasm
Sarcoplasn
7
The muscle cells ER
Sarcoplasmic reticulum
8
Run perpendicular to the ER to carry materials from fiber to fiber run opposition direction of ER
Transverse tubules
9
Submits of muscle fiber
Myofibrils
10
Sub units of myofibril
Myofilaments
11
Neuron that connect to muscles
Motor neuron
12
Gap between nerve and fiber
Synapse
13
The last part of the motor neuron in the neuromuscular junction
Synaptic terminal
14
The part of the muscle in the neuromuscular justin area
Motor end plate
15
The amount of stimulus needed to release a neurotransmitter
Action potential
16
Neurotransmitter that causes Na ions to enter the fiber
Acetylcholine
17
The gradual build up of tension do to repeated stimuli
Wave summation
18
Maximum tension with brief periods of relaxation
Incomplete tetanus
19
No period of relaxation constant full tension( smooth)
Complete tetanus
20
Contraction ends but low levels of tension remains in muscle fiber
Treppe
21
Tension in the myofibril
Internal tension
22
Tension at the tendon
External tension
23
A motor neuron and all of the fibers it connects to
Motor unit
24
Fewer fiber per neuron- react quicker with less force
Fine motor skills
25
Many fiber per neuron- slower but have more force
Course motor skills
26
Resting tension in a muscle
Muscle tone
27
Length of muscle changes
Isotoic contractions
28
Shortens
Concentric
29
