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Physiology > Nerve > Flashcards

Nerve Flashcards

1
Q

RMP in neuron

A

-70mV

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2
Q

Outside Cell membrane is which charge

A

Less negative than out

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3
Q

Ionic basis of rmp

A

K efflux

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4
Q

Properties of action potential

A

All or none law
Refractory period
Propagation

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5
Q

Muscle specualized for

A

Contracting and generating force

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6
Q

Unstriated muscle

A

Smooth

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7
Q

Nerve supply of skeletal muscle

A

Somatic

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8
Q

Hormones affect which two muscles

A

Cardiac and smooth

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9
Q

Single skeletal muscle

A

Muscle fiber

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10
Q

Properties of skeletal muscle

A 
Large
Elongated
Cylinderical
Multinucleated
Striated
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11
Q

Thick filament

A

Myosin

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12
Q

Thin filament

A

Actin
Troponin
Tropomyosin

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13
Q

Functional unit of skeletal muscle

A

Sarcomere

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14
Q

Area between two Z lines

A

Sarcomere

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15
Q

Contactile proteins

A

Actin

Myosin

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16
Q

Do actin and myosin really contact

A

No

17
Q

Regulatory protein

A

Troponin

Tropomyosin

18
Q

Tubules of sarcoplasmic reticulum

A

L tubules

19
Q

Function of sarcoplasmic reticulum

A

Concerned with Ca2+ movt and muscle metabolism

20
Q

Motor unit

A

One motor neuron and all muscle fibres innervates it

21
Q

Threshold of motor unit 1

A

Low

22
Q

What is neuromuscular transmission

A

Process by which NAP is coverted into MAP

23
Q

Junction between motor neuron and skeletal muscle cell

A

Neuromuscular junction

24
Q

Motor neuron contains what vesicles

A

Acetylcholine

25
Q

Motor end plate

A

Mucle membrane under terminal button

26
Q

sliding filamet theory is

A

Shorteing if muscle by sliding thin over thick filament

27
Q

Excitation contaction couoking

A

When excitation of muscle leads to develpomeny of muscke firce or contraction

28
Q

While sarcomere shortens ca2+ is transorted to

A

Sarcoplasmic reticulum

29
Q

Functional unit of skeletal muscle

A

Sarcomere

30
Q

What helps in rapid transmission of action potential from cell membrane to all the fibrils

A

T tubules 

31
Q

Another name of neuromuscular junction

A

Myoneural junction

32
Q

Power stroke is related to which filament

A

Myosin

33
Q

Does calcium binds to troponin or tropomyosin

A

Troponin

Physiology (10 decks)

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