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Anatomy > Muscle > Flashcards

Muscle Flashcards

1
Q

Skeletal muscle

A

Striated muscles
voluntary Movement of skeletal muscle moves the body by pulling on bones

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2
Q

Cardiac muscle

A

Specialized striated muscle found in the heart involuntary pumping of blood throughout the body

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3
Q

smooth muscles

A

Non-striated muscle found in hollow organs involuntary movement of substances

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4
Q

Muscular system and function

A

Composed of skeletal muscle
Movement posture and joint stability control of body openings Thermal regulation glycemic control

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5
Q

Circulatory system

A

Cardiac muscle is only found in the heart

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6
Q

What is skeletal muscle tissue consist of

A

Myocytes and connective tissue

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7
Q

Characteristics of skeletal muscle tissue

A

Contractility – contains myofilaments that allow to contract
Excitability- nerve cells innovate muscle tissue in order to know when to contract
 extensibility - stretch to certain extent without tearing
Elasticity- can recoil back to resting length

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8
Q

Myocyte

A

Skeletal muscle cell long cylinder cell with striations

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9
Q

Myofibrils

A

 cylinder bundles of contractile proteins
Made up of myofilaments

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10
Q

Elastic Filaments

A

Compose of Titin
Interesting filaments in place restricts overstretching

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11
Q

What filaments are light and dark bands

A

Light equals Iband
Dark equals a band

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12
Q

Sarcomere

A

Function unit of myocyte consist of segments of myofribil in between 2Z lines

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13
Q

Smallest to largest skeletal muscle

A

Myofilaments, myofibril, Muscle fiber, fascicle, muscle

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14
Q

 Endomysium

A

Then sleeve of connective tissue that in cases each myocyte

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15
Q

Perimysium

A

Sleeve of connective tissue around each fascicle

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16
Q

Epimysium

A

Diverse layer of connective tissue that wraps around each muscle

17
Q

Fascia

A

Connected tissue that holds together functionally related muscle

18
Q

Tendon

A

Connected tissue that firmly attaches muscle to bone
Endo, Peri, epimysium All join to form a tendon on the muscle end
 tendon attaches periosteum Of bone on the bone end

19
Q

Aponeurosis

A

Wide broad tendon
Wild tendons attach muscle to specific point on a bone aponeurosis provide attachment over broad area

20
Q

Cutting off nerve supply results in

A

Muscle paralysis

21
Q

Somatic motor neuron

A

Nerve cells that innervate skeletal muscle
 Fibers can travel long distances to innovate individual myocytes

22
Q

Muscle receives about

A

1/4 of the bodies blood supplies

23
Q

During exercise muscles can require up to

A

3/4 of the bodies blood supply

24
Q

Blood capillaries branch extensively through

A

Connective tissue of muscle
Endomysium perimysium epimysium

Anatomy (19 decks)

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