Test 3 (Myscle Phys) Flashcards

1
Q

Interferes with ability to produce AP’s

A

K+ accumulation

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2
Q

Due to the accumulation of lactate

A

Internal acidity

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3
Q

Leads to failure of excitation- contraction coupling

A

reduced SR calcium release

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4
Q

Caused by changes in the CNS rather than fatigue of the muscles themselves

A

Central fatigue

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5
Q

Utilized at onset on contractile activity, but limited by CP stores

A

Creatine phosphate

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6
Q

Takes place within muscle mitochondria if sufficient oxygen is present and is essential during long periods of activity

A

Cellular respiration

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7
Q

Supports anaerobic or high intensity exercise

A

Glycolysis

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8
Q

Provides sensory information about muscle length

A

Muscle spindle apparatus

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9
Q

Provide sensory information about tension exerted on tendons

A

Golgi tendon organs

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10
Q

What neurons are attached to muscle spindles?

A

Afferent neurons

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11
Q

Located on tendons near their junction with eh muscle

A

Golgi tendon organ

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12
Q

Monitor muscle tension

A

Golgi tendon organs

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13
Q

Inherited disease characterized by progressive deterioration of muscle tissue

A

Muscular dystrophy

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14
Q

Bacteria in food produces neurotoxin, which prevents the release of acetylcholine necessary for muscle contraction

A

Botulism

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15
Q

Neurodegenerative disease affecting various motor neurons which leads to loss of function leads to muscle weakness, atrophy, and spastic paralysis

A

ALS

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16
Q

Autoimmune disease in which antibodies are produced that attach to the acetylcholine receptors on the sarcolemma, this blocking or reducing the stimulatory effect of the neurotransmitter

A

Eye drooping????

17
Q

Destruction of the neurons leads to paralysis of the skeletal muscle

A

Polio

18
Q

Bacteria produces a neurotoxin that affects motor neurons in the spinal cord resulting in continuous stimulation and contraction of muscles

A

Tetanus

19
Q

Disease caused by bacteria found in soil

A

Tetanus

20
Q

Involuntary, regulated by autonomic system, striated

A

Cardiac muscle

21
Q

Mass of cardiac muscle cells connected to each other via gap junction

A

Myocardium

22
Q

Found in the walls of hollow organs and tubes with NO striations

A

Smooth muscles

23
Q

What do long thin filaments attach to?

A

Dense bodies

24
Q

What are the 3 types of smooth muscle filaments?

A

Thick myosin
Thin actin
Intermediate filaments

25
Q

Consists of discrete units that function independently of one another (units must be separately stimulated)

A

Multiunit smooth muscle

26
Q

Individual cells are electrically liked by gap junctions

A

Single-Unit smooth muscle

27
Q

Excitation-Contraction coupling in smooth muscle

A

begins with rise in intracellular concentrations

calcium binds to calmodulin