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A&P Cod > Ch 11 - Muscular System > Flashcards

Ch 11 - Muscular System Flashcards

1
Q

Frontalis (frontal belly)

A

A: draws scalp anteriorly, raises eyebrows, wrinkles skin of the forehead

Origin: Epicranial Aponeurosis

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2
Q

Occipitalis (occipital belly)

A

A: draws scalp posteriorly

I: Epicranial Aponeurosis

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3
Q

Obicularis Oculi

A

A: closes the eye

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4
Q

Obicularis Oris

A

A: closes and protrudes lips (kissing), compresses lips against teeth, shapes lips for speech

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5
Q

Buccinator

A

A: presses cheeks against teeth and lips (like for blowing, whistling, sucking, assists with chewing, draws corners of mouth laterally

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6
Q

Zygomatic Major

A

A: draws angles of mouth superiorly and laterally (smiling)

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7
Q

Risorius

A

A: draws angles of mouth laterally

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8
Q

Levator Labii Superioris

A

A: raises upper lip

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9
Q

Depressor Labii Inferioris

A

A: depresses/lower lower lip

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10
Q

Levator Anguli Oris

A

A: draws angle of mouth laterally and superiorly

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11
Q

Depressor Anguli Oris

A

A: draws angle of mouth laterally and inferiorly (like when opening mouth)

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12
Q

Mentalis

A

A: elevates and protrudes lower lip, pulls skin of chin up (pouting)

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13
Q

Platysma

A

A: draws outer part of lower lip inferiorly and posteriorly, depresses mandible

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14
Q

Masseter

A

A: elevates mandible (closes mouth)

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15
Q

Temporalis

A

A: elevates and retracts mandible

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16
Q

Superior Rectus

A

A: moves eye superiorly/elevates

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17
Q

Inferior Rectus

A

A: moves eye inferiorly/depresses

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18
Q

Lateral Rectus

A

A: moves eye laterally (abduction)

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19
Q

Medial Rectus

A

A: moves eye medially (adduction)

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20
Q

Superior Oblique

A

A: moves eye inferiorly and laterally, rotates them medially

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21
Q

Inferior Oblique

A

A: moves eye superiorly and medially, rotates them laterally

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22
Q

Sternocleidomastoid (SCM)

A

Action when acting together: flexes neck/cervical vertebral column, extends head at atlanto-occipital joint

Action unilaterally: lateral flexion of head and neck to same side, rotate head to opposite side, can elevate sternum during forced breathing

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23
Q

Splenius Capitus

A

A: extend head and vertebral column

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24
Q

Erector Spinae (group):
Spinalis Thoracis
Longissimus Thoracis
Iliocostalis Thoracis

A

A: All 3 extend the vertebral column at their respected regions

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25
Digastric
A: elevates hyoid bone
26
Stylohyoid
A: elevates hyoid bone
27
Mylohyoid
A: elevates hyoid bone
28
Omohyoid
A: depresses hyoid bone
29
Semispinalis Capitis
Action when acting bilaterally: extend head and vertebral column Action when acting unilaterally: rotate head to opposite side
30
Levator Scapulae
A: elevates scapula, rotates it downward
31
Pectoralis Minor
A: abducts scapula, rotates it downward I: Coracoid Process of Scapula
32
Rhomboid Major
A: elevates and adducts the scapula, rotates it downward, stabilizes scapula
33
Rhomboid Minor
A: elevates and adducts the scapula, rotates it downward, stabilizes scapula
34
Serratus Anterior
A: stabilizes the scapula | known as the "BOXER's MUSCLE", useful with horizontal arm movements like punching and pushing
35
Trapezius
Action of superior portion: upward rotation of scapula Action of middle fibers: adduct scapula Action of inferior fibers: depress scapula
36
Coracobrachialis
A: flexes and adducts arm at the shoulder joint O: corocoid process of the scapula
37
Pectoralis Major
A: adducts and medially rotates the arm
38
Teres Major
A: extends arm at the shoulder joint, medially rotates arm
39
Latissimus Dorsi
A: extends, adducts, and medially rotates the arm
40
Supraspinatus
A: assists with abduction of arm
41
Infraspinatus
A: laterally rotates arm
42
Subscapularis
A: medially rotates the arm
43
Deltoid
A: abducts the arm, flex the arm, medially rotate the arm
44
Teres Minor
A: laterally rotates the arm, extends the arm
45
Rotator Cuff
SITS Supraspinatous Infraspinatous Teres Minor Subscapularis
46
Biceps Brachii (long head, short head)
A: flexes forearm, supinates forearm, flexes arm at shoulder joint O: short head originates from Coracoid Process
47
Brachialis
A: flexes forearm
48
Brachioradialis
A: flexes forearm
49
Triceps Brachii (long head, lateral head, medial head)
A: extends forearm, extends arm at the shoulder joint I: Olecranon Process of the Ulna
50
Pronator Teres
A: pronates the forearm
51
Supinator
A: supinates the forearm
52
Pronator Quadratus
A: pronates forearm
53
Flexor Carpi Radialis
A: flexes ad abducts hand (radial deviation) O: Medial Epicondyle of Humerus
54
Flexor Carpi Ulnaris
A: flexes and adducts the hand (ulnar deviation) O: Medial Epicondyle of Humerus
55
Palmaris Longus
A: weakly flexes the hand O: Medial Epicondyle of Humerus
56
Flexor Digitorum Superficialis
A: flexes middle and proximal phalanx of each finger, flexes hand O: Medial Epicondyle of Humerus
57
Flexor Digitorum Profundus
A: flexes distal and middle phalanx of each finger, flexes hand
58
Flexor Pollicis Longus
A: flexes distal phalanx of thumb
59
Extensor Carpi Radialis Longus
A: extends and abducts hand
60
Extensor Carpi Radialis Brevis
A: extends and abducts hand O: Lateral Epicondyle of Humerus
61
Extensor Carpi Ulnaris
A: extends wrist/hand, radial deviates hand O: Lateral Epicondyle of Humerus
62
Extensor Digitorum
A: extends distal and middle phalanx of each finger, extends hand O: Lateral Epicondyle of Humerus
63
Extensor Pollicis Longus
A: extends distal and middle phalanx of thumb, abducts hand
64
Extensor Pollicis Brevis
A: extends proximal phalanx of thumb, extends hand
65
External Obliques
Action bilaterally: flex abdomen/vertebral column Action unilaterally: flex spine/trunk
66
Internal Obliques
Action bilaterally: flex abdomen/spine Action unilaterally: laterally flex spine
67
Transverse Abdominus
A: compresses abdomen
68
Rectus Abdominus
A: flexes spine, compresses abdomen
69
Diaphragm
A: compresses abdomen, increases vertical dimension of thoracic cavity for inhalation to occur
70
Quadratus Lumborum
Action bilaterally: extend spine Action unilaterally: laterally flex spine
71
External Intercostals
A: elevate ribs for inhalation
72
Internal Intercostals
A: depresses ribs with forceful expiration
73
Psoas Major
A: flex the thigh, rotate it laterally, flex trunk (like sitting up from supine position)
74
Iliacus
A: flex the thigh, rotate it laterally, flex trunk (like sitting up from supine position)
75
Gluteus Maximus
A: extend the thigh, extends torso, laterally rotates thigh
76
Gluteus Minimus
A: abducts thigh, medially rotates thigh
77
Tensor Fasciae Latae
A: flexes and abducts thigh
78
Iliotibial Tract
connects Tensor Fascia Latae to lower leg
79
Adductor Longus
A: adducts and flexes thigh
80
Adductor Magnus
A: adducts thigh, anterior part flexes thigh, posterior part extends thigh
81
Gracilis
A: adducts thigh, medially rotates thigh, flexes leg
82
Gluteus Minimus
A: abducts thigh, medially rotates thigh
83
Piriformis
A: laterally rotates and abducts thigh I: Greater Trochanter of Femur
84
Biceps Femoris
A: flexes leg, extends thigh
85
Semimembranosus
A: flexes leg, extends thigh
86
Semitendinosus
A: flexes leg, extends thigh
87
Rectus Femoris
A: extend leg, flex thigh O: AIIS
88
Vastus Lateralis
A: extend leg, flex thigh
89
Vastus Medialis
A: extend leg, flex thigh
90
Vastus Intermedius
A: extend leg, flex thigh
91
Sartorius
A: flexes leg, flexes thigh, abducts thigh, laterally rotates thigh O: ASIS
92
Tibialis Anterior
A: dorsiflexion, inversion
93
Fibularis Longus
A: plantar flexion, eversion
94
Fibularis Brevis
A: plantar flexion, eversion
95
Gastrocnemius
A: plantar flexion, flexes leg
96
Soleus
A: plantar flexion
97
Tibialis Posterior
A: plantar flexion, inversion
98
Extensor Digitorum Longus
A: dorsiflexion, extends distal and middle phalanx of each toe
99
Extensor Hallucis Longus
A: dorsiflexion, extends proximal phalanx of great toe
100
Flexor Digitorum Longus
A: plantar flexion, flexes distal and middle phalanx of each toe
101
Flexor Hallucis Longus
A: plantar flexion, flexes distal and middle phalanx of great toe
102
Plantaris
A: plantar flexion, flexes leg
103
Calcaneal Tendon
aka "Achille's Tendon" Made of these 3 muscles: Gastrocnemius Soleus Plantaris Inserts onto the Calcaneus Bone

A&P Cod (12 decks)

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