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BMS 1001 > Muscle > Flashcards

Muscle Flashcards

1
Q

What are the functions of the muscular system?

A 
Movement
Maintains Posture
Stabilizes joint
Generates Heat
Controls Heart Muscle
Dilation & Constriction of circulation
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2
Q

What are muscle cells called?

A

Muscle Fibres

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3
Q

What is the name of the 2 proteins found in a muscle fiber?

A

Myocin & Actin

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4
Q

What are the preffix’s for muscle?

A

Myo, Mys and Sarco

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5
Q

What is the name for the cell membrane in a muscle fibre?

A

Sarcolemma

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6
Q

What is the name change for the Cytoplasm in the muscle fiber?

A

Sarcoplasm

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7
Q

What is the name change for the Smooth ER in the muscle fiber?

A

Sarcoplasmic reticulum

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8
Q

What are the 3 types of muscle, and give an example of each?

A

Skeletal - biceps,
Smooth - uterus, circulatory blood vessels
Cardiac - heart

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9
Q

What is the function of skeletal muscle and what nerve pathway supplies them?

A

Movement and the Somatic nervous system -

Visually - Striated. Voluntary movement

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10
Q

What nerve system supplies the smooth muscle?

A

Parasympathetic and Sympathetic

Visually - Uni-striated. Involuntary movement

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11
Q

What nerve supply supplies Cardiac muscle?

A

Sympathetic and Parasympathetic

Visually Striated - Involuntary movement

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12
Q

What are the levels of organisation within a skeletal muscle?

A

Sarcomere - Myofibril - Muscle Fiber (cell) - Muscle Fiber bundle - Muscle

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13
Q

What is the name of the connective tissue that surrounds the whole muscle?

A

Epimyosium

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14
Q

What is the name of the CT that covers the Facicle (muscle fiber bundle)?

A

Perimysium

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15
Q

What is the name of the CT that covers the Muscle Fiber?

A

Endomysisum

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16
Q

What is the name of the area where the nerve axon meet the muscle fiber?

A

Muscle end plate.

17
Q

What is teh name of the thin filaments?

A

Actin

18
Q

What is the name of the thick filaments?

A

Myosin

19
Q

What is the name given to the functional unit within a Skeletal muscle fiber?

A

Sarcomere

20
Q

Why is calcium important in muscle contraction?

A

It binds to the troponin forcing it to change shape and the tropomyosin to move off binding sites

21
Q

What does myosin need to move?

A

It need one molecule of ATP to move to bind and one molecule to release. ATP is converted to ADP and Pi

22
Q

Where are the Ca ions kept?

A

In the Sarcoplasmic reticulum

23
Q

What happens when an action potential is generated?

A

The AP travels do the T-Tubles opening the Sarcoplasmic reticulium allowing Ca ions into the Sarcoplasm which then bind to Troponin

24
Q

What is the name of the nurotransmittter used by skeletal muscle?

A

Acetylcholine

BMS 1001 (18 decks)

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