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3B-Victoria Scott > Muscular System > Flashcards

Muscular System Flashcards

1
Q

Skeletal Muscle

A

voluntary, striated

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2
Q

Cardiac Muscle

A

involuntary, heart muscle, striated

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3
Q

Smooth Muscle

A

involuntary, not striated

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4
Q

Exicability

A

able to send electrical waves along the entire length

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5
Q

Elasticity

A

Having the ability to recoil to the original length

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6
Q

Extensibility

A

Allows muscles to stretch and 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

A

Target motion direction: Depression

Movement: Stabilizes clavicle during movement by depressing it

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18
Q

Serratus Anterior

A

Target motion direction: Scapula protracts; Ribs elevate

Movement: Moves arms from from side of body to front of body; assists with inhalation

19
Q

Trapezius

A

Target motion direction: Scapula rotates inferiorly, retracts, elevates, and depresses; Spine extends
Movement: Elevates shoulders (shrugging), pulls shoulder blades together, tilts head backwards

20
Q

Rhomboid Major

A

Target motion direction: Retracts; rotates inferiorly

Movement: Stabilizes scapula during pectoral girdle movement

21
Q

Pectoralis Major

A

Target motion direction: Flexion, adduction, medial rotation

Movement: Brings elbows together, moves elbow up (as during an uppercut punch)

22
Q

Latissimus dorsi

A

Target motion direction: Humerus extension, adduction, and medial rotation; scapula depression
Movement: moves elbow back (as if elbowing someone behind you); spreads elbows apart

23
Q

Deltoid

A

Target motion direction: Abduction, flexion, extension, and medial and lateral rotation
Movement: lifts arms at the shoulder

24
Q

Supraspinatus

A

Target motion direction: abduction

Movement: rotates the elbow outwards (as if during a tennis swing)

25
Q

Teres Major

A

Target motion direction: extension, adduction

Movement: Assists the infraspinatus in rotating the elbow outwards

26
Q

Biceps Brachii

A

Target motion direction: flexion, supination

Movement: performs a bicep curl, also allows palm of hand to point toward the body while flexing

27
Q

Triceps Brachii

A

Target motion direction: extension

Movement: extends forearm (as in a punch)

28
Q

Pronator teres

A

Target motion direction: Pronation

Movement: Turn hands palm-down

29
Q

Supinator

A

Target motion direction: Supination

Movement: Turn hands palm-up

30
Q

Iliacus

A

Target motion direction: thigh: flexion and lateral rotation; torso: flexion
Movement: raises the knee at the hip, as if performing a knee attack; also assists the lateral rotators in twisting the thighs (and lower leg) outward, and assists with bending over and maintaining posture

31
Q

Gluteus Maximus

A

Target motion direction: Extension

Movement: lowers the knee and moves the thigh back, as when getting ready to kick a ball

32
Q

Gluteus Medius

A

Target motion direction: Abduction

Movement: opens the thighs like when doing a split

33
Q

Gluteus Minimus

A

Target motion direction: Abduction

Movement: brings the thighs back together

34
Q

Adductor Longus

A

Target motion direction: adduction; flexion

Movement: brings the thighs back together; also assists with raising the knee

35
Q

Rectus Femoris

A

Target motion direction: tibia/fibula: extension; thigh: flexion
Movement: moves the lower leg out in front of the body, as if kicking; also assists in raising the knee

36
Q

Biceps Femoris

A

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

37
Q

Tibialis Anterior

A

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

38
Q

Extensor Hallucis Longus

A

Target motion direction: foot: dorsiflexion; big toe: extension
Movement: raises the sole of the foot off the ground as when preparing to foot-tap; extends big toe

39
Q

Extensor Digitorum Longus

A

Target motion direction: foot: dorsiflexion; toes: extension

Movement: raises the sole of the foot off the ground as when preparing to foot-tap; extends toes

40
Q

Gastrocnemius

A

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

41
Q

Soleus

A

Target motion direction: plantar flexion

Movement: lowers the sole of the foot to the ground as when foot tapping or jumping; also maintains posture when walking

42
Q

Tibialis Posterior

A

Target motion direction: plantar flexion

Movement: lowers the sole of the foot to the ground as when foot tapping or jumping

43
Q

Flexor Digitorum Longus

A

Target motion direction: foot: plantar flexion and inversion; toes: flexion
Movement: lowers the sole of the foot to the ground as when foot tapping or jumping; also bends the inside of foot upward and flexes the toes

44
Q

Flexor Hallucis Longus

A

Target motion direction: big toe: flexion; foot: plantar flexion
Movement: flexes the big toe

3B-Victoria Scott (11 decks)

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