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Body log muscles > muscles > Flashcards

muscles Flashcards

1
Q

what are the 2 types of muscle cells?

A

striated and non-striated

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2
Q

which 2 are striated?

A

cardiac and skeletal

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3
Q

which one is non-striated?

A

smooth muscle

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4
Q

which muscle type has no nervous innervation?

A

smooth

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5
Q

what is the sarcosome?

A

the mitochondrion in muscle cells

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6
Q

what is the sarcoplasmic reticulum?

A

the smooth ER in muscle cells

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7
Q

what is the order of structure?

A

epimysium, perimysium, fasicle, endomysium and muscle fibre

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8
Q

what are the 3 types of fibres?

A

slow oxidative, fast oxidative glycolytic and fast glycolytic

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9
Q

what is type 1

A

slow oxidative

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10
Q

which type has low blood supply and respires anaerobically?

A

type 2b (fast glycolytic)

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11
Q

what is type 1 for/

A

standing and walking

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12
Q

what is type 2B for?

A

sprinting and running

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13
Q

what colour is type 1 and 2a vs type 2 B

A

red vs white

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14
Q

where are the nuclei in cardiac muscle cells?

A

central

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15
Q

where are the nuclei in skeletal muscle cells?

A

peripheral

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16
Q

what is ANP and BNP

A

atrial natriuretic hormone and brain-type nateuriteic peptide

17
Q

what is the role of ANP and BNP and why are they released?

A

their roles are to reduce pressure by decreasing blood volume and are released during heart failure

18
Q

what is the order in the conduction of the heart?

A

SA node -> AV node-> bundle of his -> pukyne fibres

19
Q

is smooth muscle voluntary of involuntary?

A

involuntary, leading to things like hypertension, dysmennoreah etc

20
Q

LEARN THE SLIDE 58 ON CONTRACTION OF MUSCLE

A

PLEASE DO THAT RN (sliding filament theory too)

21
Q

What is myasthenia gravis?

A

autoimmune disease

22
Q

what causes myasthenia graves?

A

immune system produces antibodies against the Ach receptors on the endplate causing them to block and reduce synaptic transmission

23
Q

what 3 things form the thin filament of actin?

A

actin, troponin and tropomyosin

24
Q

what is required for muscle contraction o take place?

A

calcium

Body log muscles (1 decks)

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