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Laney Thornton > Muscular System > Flashcards

Muscular System Flashcards

1
Q

Skeletal Muscle (voluntary)

A

Multinucleated structures that compose the skeletal muscle

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2
Q

Smooth Muscle (involuntary)

A

Found in hollow organs such as bladder, stomach, uterus, intestines, and passage ways of circulatory system

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3
Q

Cardiac Muscle (involuntary)

A

Cardiac muscle are only found in the heart

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4
Q

Excitability

A

Able to send electrical waves (action potential) along the entire length

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5
Q

Elasticity

A

Having the ability to recoil back to its original length

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6
Q

Extensibility

A

Allows muscles to stretch or extend

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7
Q

Contractility

A

Allows muscles to pull on its attachment and shorten

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8
Q

Fascicle

A

The muscle fibers that are arranged in bundles

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9
Q

Epimysium

A

Outermost layer, surrounds entire muscle

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10
Q

Perimysium

A

Separates and surrounds fascicles

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11
Q

Endomysium

A

Surrounds each individual muscle fiber

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12
Q

Sarcolemma

A

Muscle fiber membrane

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13
Q

Myofibril

A

Individual parallel muscle fibers (made up of actin and myosin

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14
Q

Sarcoplasm

A

Inner material surrounding the myofibril (equivalent to the cell’s cytoplasm)

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15
Q

Actin

A

Thin filaments

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16
Q

Myosin

A

Thick filaments

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17
Q

Subclavius (prime mover)

A

Movement - stabilizes clavicle during movement by depressing it
Target Motion Direction - depression

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18
Q

Serratus Anterior (prime mover)

A

Movement - moves arm from side of body to front of body; assists with inhalation
Target Motion Direction - scapula: protracts; ribs: elevates

19
Q

Trapezius (prime mover)

A

Movement - elevates shoulders (shrugging); pulls shoulder blades together, tilts head backwards
Target Motion Direction - scapula: rotates inferiorly, retracts, elevates, and depresses; spine: extends

20
Q

Rhomboid Major (prime mover)

A

Movement - stabilizes scapula during pectoral girdle movement
Target Motion Direction - retracts, rotates inferiorly

21
Q

Pectoralis Major (prime mover)

A

Movement - brings elbows together; moves elbow up (as during an uppercut punch)
Target Motion Direction - flexion; adduction; medial rotation

22
Q

Latissimus Dorsi (prime mover)

A

Movement - moves elbows back (as in elbowing someone standing behind you); spreads elbows apart
Target Motion Direction - humerus: extension, adduction, and medial rotation; scapula: depression

23
Q

Deltoid (prime mover)

A

Movement - lifts arms at the shoulder

Target Motion Direction - abduction; flexion; extension; medial and lateral rotation

24
Q

Supraspinatus (prime mover)

A

Movement - rotates the elbow outwards, as during a tennis swing
Target Motion Direction - abduction

25
Q

Teres Major (prime mover)

A

Movement - assists the infraspinatus in rotating the elbow outwards
Target Motion Direction - extension; adduction

26
Q

Biceps Brachii (prime mover)

A

Movement - performs a bicep curl; also allows palm of hand to point toward body while flexing
Target Motion Direction - flexion; supination

27
Q

Triceps Brachii (prime mover)

A

Movement - extends forearm, as during a punch

Target Motion Direction - extension

28
Q

Pronator Teres (prime mover)

A

Movement - turns hand palm-down

Target Motion Direction - pronation

29
Q

Supinator (prime mover)

A

Movement - turns hand palm-up

Target Motion Direction - supination

30
Q

Iliacus (prime mover)

A

Movement - raises the knee at the hip; assists the lateral rotators in twisting the thigh (and lower leg) outward; assists with bending over and maintaining posture
Target Motion Direction - thigh: flexion and lateral rotation; torso: flexion

31
Q

Gluteous Maximus (prime mover)

A

Movement - lowers the knee and moves the thigh back, kicking a ball
Target Motion Direction - extension

32
Q

Gluteus Medius (prime mover)

A

Movement - opens the thigh, as when doing a split

Target Motion Direction - abduction

33
Q

Gluteus Minimus (prime mover)

A

Movement - brings thighs back together

Target Motion Direction - abduction

34
Q

Adductor Longus (prime mover)

A

Movement - brings thighs back together; assists with raising the knee
Target Motion Direction - adduction; flexion

35
Q

Rectus Femoris (prime mover)

A

Movement - moves lower leg out in front of body, as when kicking; assists in raising the knee
Target Motion Direction - tibia/fibula: extension; thigh: flexion

36
Q

Biceps Femoris(prime mover)

A

Movement - moves back of lower leg up and back towards the buttocks, as when kneeling; also moves thigh down and back and twists the thigh (and lower leg) outward
Target Motion Direction - tibia/fibula: flexion; thigh: extension, lateral rotation

37
Q

Tibialis Anterior (prime mover)

A

Movement - raises sole of the foot off the ground, as when preparing to foot-tap; bends inside of the foot upwards, as when catching your balance while falling laterally toward the opposite side as the balancing foot
Target Motion Direction - dorsiflexion; inversion

38
Q

Extensor Hallucis Longus (prime mover)

A

Movement - raises the sole of the foot off the ground, as when preparing the foot-tap; extends the big toe
Target Motion Direction - foot: dorsiflexion; big toe: extension

39
Q

Extensor Digitorum Longus (prime mover)

A

Movement - raises the sole of the foot off the ground, as when preparing to foot-tap; extends the toes
Target Motion Direction - foot: dorsiflexion; toes: extension

40
Q

Gastrocnemius (prime mover)

A

Movement - lowers the sole of the foot to the ground, as when foot-tapping or jumping; assists in moving the back of the lower legs up and towards the buttocks
Target Motion Direction - foot: plantar flexion; tibia/fibula: flexion

41
Q

Soleus (prime mover)

A

Movement - lowers the sole of the foot to the ground, as when foot-tapping or jumping; maintains posture while walking
Target Motion Direction - plantar flexion

42
Q

Tibialis Posterior (prime mover)

A

Movement - lowers the sole of the foot to the ground, as when foot-tapping or jumping
Target Motion Direction - plantar flexion

43
Q

Flexor Digitorum Longus (prime mover)

A

Movement - lowers the sole of the foot to the ground, as when foot-tapping or jumping; bends the inside of the foot upward and flexes the toes
Target Motion Direction - foot: plantar flexion and inversion; toes: flexion

44
Q

Flexor Hallicis Longus (prime mover)

A

Movement - flexes the big toe

Target Motion Direction - big toe: flexion; foot: plantar flexion

Laney Thornton (10 decks)

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