muscle tissue Flashcards

1
Q

fasicle

A

tubes, group of muscle cells

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2
Q

muscle cell (fiber)

A

multiple nuclei, striated

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3
Q

a bicep is an

A

organ

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4
Q

sarcolemma

A

Muscle fiber has a phospholipid bilayer, cell membrane

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5
Q

myofibrils (organelle)

A

tubes full of contractile proteins

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6
Q

hypertrophy

A

An enlargement of existing muscle
fibers

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7
Q

sacroplasm

A

muscle cell cytoplasm and contains organelles like
mitochondria and a large amount of glycogen for energy production and
myoglobin for oxygen storage.

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8
Q

sarcoplasmic reticulum

A

modified endoplasmic reticulum (stores calcium Ca++)
-neuron triggers SR to release calcium

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9
Q

sacromeres

A

basic unit of contraction in skeletal muscle

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10
Q

myosin

A

the main component of thick filaments, functions as
a motor protein. (contractile protein)

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11
Q

actin

A

the main component of thin filaments, connects to the
myosin for the sliding together of the filaments. (contractile protein)

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12
Q

tropomyosin

A

keeps us from spasms (regulatory protein)

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13
Q

troponin

A

Protein that sits on top of tropomyosin, calcium binds to (regulatory protein)

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14
Q

titin

A

elastic protein that helps a sarcomere return to its
resting length after a muscle has contracted or been
stretched. (structural protein)

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15
Q

dystrophin

A

attaches tubes of contractile proteins to cell membrane

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15
Q

main function of skeletal muscle

A

to move bone
Stabilize joints
Produce heat

16
Q

epimysium

A

dense fibrous connective tissue

17
Q

perimysium

A

dense irregular connective tissue

18
Q

Endomysium

A

areolar connective tissue

19
Q

Aponeurosi

A

holding muscle to muscle

20
Q

Muscle origin

A

Attachment site to the bone where it is stationary

21
Q

Muscle insertion

A

muscle attaches to bone that is going to move

22
Q

Catabolize

A

big to small generates heat

23
Q

Conductivity

A

The property of muscle tissue that allows an impulse to travel down the entire length of the cell membrane

24
Q

Botulinum toxin (botox)

A

paralysis muscles, blocks the ACh synaptic vesicle

25
Q

Myoglobin

A

supports oxygen in muscles, makes muscle fibers red

26
Q

Slow twitch muscle fibers

A

aerobic, steady power, endurance

27
Q

Fast twitch fibers

A

anaerobic, explosive powers, fatigues easily

28
Q

Slow oxidative fibers

A

use the most oxygen, use ATP slowly (trunk and lower limbs)

29
Q

Fast oxidative fibers

A

less myoglobin, use atp quickly

30
Q

Fast glycolytic fibers

A

white fibers, not a lot of ability to use ATP- use it really fast (upper limbs)

31
Q

Compartment syndrome

A

adductor swells, compressed nerves and blood vessels
Fascia needs to be cut to release muscle and swelling