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Bio 250 > Muscles > Flashcards

Muscles Flashcards

1
Q

Frontalis

A

O: galea aponeurotica
I: skin around eyebrows and nose
Raises eyebrows, wrinkles forehead

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2
Q

Orbicularis oculi

A

O: frontal bone
I: lateral palpebral raphe
Closes eyelids

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3
Q

Levator labii superioris

A

O: medial infra-orbital margin
I: skin and muscle of upper lip
Elevates upper lip

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4
Q

Risorius

A

O: deep fascia of face
I: skin at angle of mouth
Retracts corners of mouth

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5
Q

Depressor anguli oris

A

O: mandible
I: angle of mouth
Depresses mandible

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6
Q

Platysma

A

O: skin over lower neck
I: mandible
Draws skin of neck superiorly, draws down angle of mouth (grimace)

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7
Q

Temporalis

A

O: Temporal fossa
I: coronoid process of mandible
Elevates mandible

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8
Q

Masseter

A

O: zygomatic arch
I: Mandible
Elevates mandible (closes mouth to chew)

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9
Q

Zygomaticus

A

O: zygomatic bone
I: angle of mouth
Raises corners of mouth (smile)

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10
Q

Sternocleidomastoid

A

O: sternum, clavicle
I: mastoid process of temporal bone
Tilts/rotates head

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11
Q

Extrinsic eye muscles (6)

A 
superior rectus
lateral rectus
medial rectus
inferior rectus
superior oblique
inferior oblique
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12
Q

extrinsic tongue muscles

A

3

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13
Q

Orbicularis oris

A

O: maxilla and mandible
I: skin at angles of mouth
puckers lips

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14
Q

Pectoralis Major

A

O: clavicle, sternum, costal cartilages
I: humerus
Flexes arm at shoulder, adducts arm at shoulder

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15
Q

Serratus anterior

A

O: first 8 ribs
I: scapula
Abducts and upwardly rotates scapula

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16
Q

Diaphragm

A

O: sternum, costal cartilages, vertebral columns of lumbar vertebrae
I: central tendon
Primary muscle of inspiration

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17
Q

External intercostals

A

O: lower border of superior ribs
I: upper border of inferior ribs
Inhalation

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18
Q

Internal intercostals

A

O: rib; inferior border
I: rib, superior border
Holds ribs steady

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19
Q

External oblique

A

O: ribs 5-12
I: iliac crest, abdominal aponeurosis
Flexes and rotates vertebra column, compresses abdomen

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20
Q

Internal oblique

A

O: iliac crest
I: costal cartilages, abdominal aponeurosis
Flexes and rotates vertebral column, compresses abdomen

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21
Q

Transversus abdominis

A

O: iliac crest
I: abdominal aponeurosis, pubic symphysis, xiphoid process
Compresses abdomen

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22
Q

Rectus abdominis

A

O: pubic crest, symphysis pubis
I: costal cartilages of ribs, xiphoid process of sternum
Flexes torso, compresses abdomen

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23
Q

Tendinous intersections

A

3-4 fibrous bands that cross rectus abdominis

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24
Q

Linea alba

A

tendon that runs down midline, separates rectus abdominis into R and L

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25
Inguinal ligament
from ilium to pubic bone
26
Deltoid
O: clavicle, scapula I: deltoid tuberosity of humerus Prime mover of arm abduction multipennate
27
Biceps brachii
O: acromion, glenoid cavity I: by tendon into radial tuberosity Flexes elbow joint
28
Brachialis
O: front of humerus I: Coronoid process of ulna Major forearm flexor (lifts ulna as biceps lifts radius)
29
Triceps brachii
O: scapula, humerus I: by tendon into olecranon of ulna Forearm extensor
30
Thenar group (ball of thumb)
O: flexor retinaculum, nearby carpals I: base of thumb Controls thumb movements (abducts, flexes, opposes, adducts)
31
Hypothenar group (ball of pinky)
O: pisiform bone, flexor retinaculum I: little finger Abducts, flexes little finger
32
Quadriceps femoris
Rectus femoris, vastus lateralis, vastus medialis, vastus intermedius
33
Rectus femoris
O: iliac spine, acetabulum I: patella, tibial tuberosity via patellar ligament Extends knee, flexes thigh at hip
34
Vastus lateralis
O: greater trochanter I: patella and tibial tuberosity via patellar ligament Extends and stabilizes knee
35
Vastus medialis
O: linea aspera I: patella and tibial tuberosity via patellar ligament Extends knee
36
Vastus intermedius
O: femur shaft I: patella and tibial tuberosity via patellar ligament Extends knee
37
Sartorius
O: iliac spine I: proximal tibia flexes, abducts, rotates thigh; allows cross-legged position
38
Biceps femoris
O: ischial tuberosity, linea aspera I: head of fibia, lateral condyle of tibia (via common tendon) Extends thigh and flexes knee
39
Semitendinosus
O: ischial tuberosity I: tibial shaft Extends thigh and flexes knee
40
Semimembranosus
O: ischial tuberosity I: medial condyle of tibia Extends thigh and flexes knee
41
Gluteus maximus
O: ilium, sacrum, coccyx I: gluteal tuberosity of femur Major extensor of thigh
42
Gluteus medius
O: between gluteal lines on ilium I: by short tendon into greater trochanter of femur Abducts and rotates thigh
43
Ilioitibial tract
Thickened lateral portion of tensor fasciae latae | Runs from iliac crest to knee
44
Tensor fasciae latae
O: iliac crest I: iliotibial tract Stabilizes the knee
45
Occipitalis
O: occipital and temporal bones I: Epicranial aponeurosis Pulls scalp posteriorly
46
Trapezius
O: occipital bone, spinous process of C7 and all thoracic vertebrae I: acromion, spine of scapula, clavicle Stabilizes, raises, retracts, rotates scapula
47
Rhomboids
O: spinous process of C7 I: medial border of scapula Stabilizes scapula
48
Latissimus dorsi
O: indirect attachment via lumbrodorsal fascia into spines of vertebrae I: intertubercular sulcus of humerus
49
Supraspinatus
O: supraspinous fossa of scapula I: greater tubercle of humerus Abduction of shoulder joint
50
Infraspinatus
O: infraspinous fossa of scapula I: greater tubercle of humerus Rotates humerus laterally
51
Teres minor
O: lateral border of scapula I: greater tubercle of humerus Rotates humerus laterally
52
Teres major
O: posterior of scapula I: lesser tubercle of humerus Extends, medially rotates, adducts humerus
53
Subscapularis
O: subscapular fossa of scapula I: lesser tubercle of humerus Rotates humerus medially
54
Brachioradialis
O: distal end of humerus I: styloid process of radius Synergist in flexing forearm
55
Flexor carpi radialis
O: medial epicondyle of humerus I: base of second and third metacarpals Flexor of wrist
56
Palmaris longus
O: medial epicondyle of humerus I: fascia of palm Tenses skin and fascia of palm during hand movements
57
Flexor carpi ulnaris
O: medial epicondyle of humerus I: pisiform and hamate bones Flexor of wrist
58
Extensor carpi radialis longus
O: humerus I: base of second metacarpal Extends wrist
59
Extensor carpi radialis brevis
O: humerus I: base of third metacarpal Extends wrist
60
Extensor digitorum
O: humerus I: by 4 tendons into distal phalanges of fingers 2-5 Prime mover of finger extension
61
Extensor carpi ulnaris
O: humerus I: base of 5th metacarpal Extends wrist
62
Pronator teres
O: humerus I: by tendon into radius Pronates forearm
63
Tibialis anterior
O: lateral condyle of tibia, upper tibial shaft I: by tendon into medial cuneiform Dorsiflexion
64
Gastrocnemius
O: medial and lateral condyles of femur I: calcaneus via calcaneal tendon
65
Extensor digitorum longus
O: lateal condyles of tibula, fibula, interosseous membrane I: phalanges 2-5 Dorsiflexes foot
66
Extensor hallucis longus
O: fibular shaft, interosseous membrane I: distal phalanx of big toe extends big toe
67
Fibularis longus
O: lateral fibula I: by long tendon to underside of foot plantar flexion, everts foot
68
Fibularis brevis
O: fibular shaft I: by tendon to 5th metatasal plantar flexion, everts foot
69
Flexor hallicus longus
O: fibula, interosseous membrane I: tendon to big toe plantar flexes and inverts foot, flexes big toe
70
Soleus
O: tibia, fibula, interosseous membrane I: calcaneus via calcaneal tendon plantar flexes foot
71
Gracilis
O: pubis I: tibia Adducts thigh, flexes and medially rotates leg
72
Adductor longus
O: pubis I: linea aspera Adducts, flexes, medially rotates thigh
73
Adductor brevis
O: pubis I: linea aspera Adducts, flexes, medially rotates thigh
74
Adductor magnus
O: ischium, pubis I: linea aspera and adductor tubercle of femur Adducts, medially rotates and flexes thigh

Bio 250 (24 decks)

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