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Trevor Cunningham > Muscular System > Flashcards

Muscular System Flashcards

1
Q

Skeletal Muscle (voluntary)

A

Fibers are multinucleated structures that compose the skeletal muscle

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2
Q

Cardiac Muscle (involuntary)

A

Are only found in the heart

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3
Q

Smooth Muscle (involuntary)

A

Are called so because they do not have striations. These can be found in hollow organs such as bladder, stomach, uterus, intestines, and passageways of circulatory system

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4
Q

Exicability

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

A

Small triangular muscle, placed between the clavicle and the first rib, depression

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18
Q

Serratus anterior

A

Muscle that originates on the surface of the 1st to 8th ribs at the side of the chest, protract

19
Q

Trapezius

A

Either of a pair of large triangular muscles extending over the back of the neck, rotates inferiorly

20
Q

Rhomboid major

A

Skeletal muscle on the back that connects the scapula with the vertebrae of the spinal column, rotates inferiorly

21
Q

Pectoralis major

A

Thick, fan-shaped or triangular convergent muscle, situated at the chest of the human body, flexion

22
Q

Latissimus dorsi

A

Large, flat muscle covering the width of the middle and lower back, medial rotation

23
Q

Deltoid

A

Large triangular shaped muscle which lies over the glenohumeral joint, medial and lateral rotation

24
Q

Supraspinatus

A

relatively small muscle of the upper back that runs from the supraspinous fossa superior portion of the scapula to the greater tubercle of the humerus, abduction

25
Q

Teres major

A

Small muscle that runs along the lateral border of the scapula, extension

26
Q

Biceps brachii

A

Two-headed muscle of the arm, flexion

27
Q

Triceps brachii

A

Muscle that runs down the back of the humerus, extension

28
Q

Pronator teres

A

Muscle (located mainly in the forearm), pronation

29
Q

Supinator

A

Muscle whose contraction produces or assists in the supination of a limb or part of a limb, supination

30
Q

Iliacus

A

Triangular muscle which passes from the pelvis through the groin on either side and, together with the psoas, flexes the hip, flexion and lateral rotation

31
Q

Gluteus maximus

A

Largest and heaviest muscle in the body, extension

32
Q

Gluteus medius

A

Large fan-shaped muscle located in the posterior hip, abduction

33
Q

Gluteus minimus

A

The smallest muscle of the glutei, abduction

34
Q

Adductor longus

A

Skeletal muscle located in the thigh, flexion

35
Q

Rectus femoris

A

Part of the quadriceps group, extension

36
Q

Biceps femoris

A

Muscle in the back of the thigh which helps to flex the leg, flexion

37
Q

Tibialis anterior

A

Along the upper two-thirds of the lateral, inversion

38
Q

Extensor hallucis longus

A

Thin muscle, situated between the Tibialis anterior and the Extensor digitorum longus, dorsiflexion

39
Q

Extensor digitorum longus

A

Feather-like muscle of the anterior (extensor) compartment of leg, dorsiflexion

40
Q

Gastrocnemius

A

Chief muscle of the calf of the leg, which flexes the knee and foot. It runs to the Achilles tendon from two heads attached to the femur, dorsiflexion

41
Q

Soleus

A

powerful lower limb muscle, plantar flexion

42
Q

Tibialis posterior

A

Located deep in the posterior compartment of the lower leg and situated between the Flexor Digitorum Longus and the Flexor Hallucis Longus, plantar flexion

43
Q

Flexor digitorum longus

A

Thin muscle that belongs to the deep posterior muscles of the leg. It runs from the posterior surface of the tibia, plantar flexion

44
Q

Flexor hallucis longus

A

Powerful muscle located on the posterior aspect of the fibular below the deep fascia of the calf, flexion

Trevor Cunningham (7 decks)

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