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Human A&P II > L-1 Muscles > Flashcards

L-1 Muscles Flashcards

1
Q

Frontal belly of epicranius

A

Origin: Epicranial aponeurosis
Insertion: skin or eyebrows/root of nose
Action: raises eyebrows

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2
Q

Occipital belly of the epicranius

A

Origin: occipital/temporal bones
Insertion: epicranial aponeurosis
Action: pulls scalp posteriorly

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3
Q

Temporalis

A

Origin: temporal fossa
Insertion: coronoid process of mandible
Action: closes jaw

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4
Q

Zygomaticus

A

Origin: zygomatic
Insertion: skin/muscles of upper lip
Action: moves upper lip/ opens lips

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5
Q

Risorius

A

Origin: fascia of masseter muscle
Insertion: skin @ angle of mouth
Action: draws corner of lip laterally/ smile/ grin

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6
Q

Levator Labii Superioris

A

Origin: zygomatic Bone
Insertion: skin/muscle of upper lip
Action: raises and furrows upper lip and opens lips

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7
Q

Buccinator

A

Origin: molar region of maxilla and mandible
Insertion: orbicularis oris
Action: draws corner of mouth laterally/ compressed cheeks/stores food when eating

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8
Q

Depressor Anguli Oris

A

Origin: body of mandible
Insertion: skin and muscle of lower lip
Action: draws lip inferiorly

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9
Q

Depressor Labii Inferioris

A

Origin: mandible
Insertion: skin/muscle of lower lip
Action: move lower lip inferiorly

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10
Q

Mentalis

A

Origin: mandible below incisors
Insertion: skin of chin
Action: protrudes lower lip/ wrinkles chin

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11
Q

Masseter

A

Origin: maxilla/zygomatic
Insertion: mandible
Action: closes jaw

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12
Q

Orbicularis oculi

A

Origin: frontal/maxillary bones and ligaments around orbit
Insertion: tissue of eyelid
Action: closes eye/blinking

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13
Q

Orbicularis oris

A

Origin: arises indirectly from maxilla/mandible
Insertion: encircles mouth
Action: closes lips/kissing and whistle muscle

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14
Q

Platysma

A

Origin: fascia of chest over pectoral and deltoid muscles
Insertion: lower mandible/skin/muscles @ corner of mouth
Action: tenses skin of neck

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15
Q

Pectoralis major

A

Origin: clavicle, sternum, coastal cartilage
Insertion: humerus
Action: flex/adduct arm

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16
Q

Rectus abdominis

A

Origin: pubis
Insertion: xiphoid process
Action: flex vertebral column

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17
Q

Serratus Anterior

A

Origin: lateral aspect of ribs 1-8
Insertion: vertebral border of anterior surface of scapula
Action: holds scapula against chest wall/rotates scapula and essential to raising arm

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18
Q

External oblique

A

Origin: anterior surface of lower 8 ribs
Insertion: linea Alba/ pubic and iliac crest
Action: compressed abdominal wall

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19
Q

Internal oblique

A

Origin: lumbar fascia
Insertion: linea Alba/ pubic crest
Action: compressed abdominal wall

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20
Q

Transversus abdominis

A

Origin: inginual ligament
Insertion: linea Alba/pubic crest
Action: Compresses abdominal contents

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21
Q

Diaphragm

A

Origin: inferior border of rib/sternum
Insertion: central tendon
Action: prime mover of inspiration flattens and contraction.

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22
Q

Trapezius

A

Origin: occipital bone
Insertion: spinous process of scapula
Action: extends head, raises rotates and retracts scapula

23
Q

Latissimus Dorsi

A

Origin: iliac crest
Insertion: humerus
Action: extends/adducts arm

24
Q

Deltoid

A

Origin: clavicle/scapula
Insertion: deltoid tuberosity of humerus
Action: abducts arm

25
Q

Bicepts Brachii

A

Origin: coracoid process
Insertion: radial tuberosity
Action: flexes elbow

26
Q

Triceps Brachii

A

Origin: humerus
Insertion: olecranon process
Action: extends elbow

27
Q

Brachialis

A

Origin: distal portion of anterior humerus
Insertion: coronoid process of ulna
Action: flex or if forearm

28
Q

Brachi Oradialis

A

Origin: lateral ridge at royal end of humerus
Insertion: base of radial styloid process
Action: synergist in forearm flexion

29
Q

Pronator Teres

A

Origin: medial epicondyle or humerus and coronoid process of ulna
Insertion: midshaft of radius
Action: pronate forearm

30
Q

Flexor Carpi Radialis

A

Origin: medial epicondyle of humerus
Insertion: base of metacarpals I and III
Action: powerful flexor and abductor of the hand

31
Q

Palmaris Longus

A

Origin: medial epicondyle of humerus
Insertion: palmar aponeurosis/ skin and fascia of palm
Action: flexes hand, tenses skin and fascia of palm

32
Q

Flexor Carpi Ulnaris

A

Origin: medial epicondyle of humerus and olecranon
Insertion: base of metacarpal V
Action: flexes and adducts hand

33
Q

Supinator

A

Origin: lateral epicondyle of humerus, proximal ulna
Insertion: proximal end of radius
Action: synergist of bicepts Brachii to supinate forearm

34
Q

Extensor Digitorium

A

Origin: lateral epicondyle of humerus
Insertion: by four tendons into distal phalanges of fingers II-V
Action: prime mover of finger extension, extends hand

35
Q

Extensor Carpi Ulnaris

A

Origin: lateral epicondyle of humerus
Insertion: base of metacarpal V
Action: Extends and adducts hand

36
Q

Gluteus Maximus

A

Origin: dorsal ilium, sacrum, coccyx
Insertion: gluteal tuberosity of femur and iliotibal tract
Action: powerful thigh extensor

37
Q

Gluteus Medius

A

Origin: upper lateral surface of ilium
Insertion: greater trochanter of femur
Action:
Abducts and medically rotates thigh, steadies pelvis while walking

38
Q

Tensor fasciae latae

A

Origin: anterior iliac crest
Insertion: iliotibal tract
Action: flexes/abducts and medically rotates thigh and steadies trunk

39
Q

Adductor Longus

A

Origin: pubis
Insertion: linea aspera
Action: adduct and medially rotate/flex thigh

40
Q

Adductor Magnus

A

Origin: ischial and pubic rami and ischial tuberosity
Insertion: linea aspera and adductor tubercle of femur
Action: adduct and medially rotate and flex thigh

41
Q

Bicepts Femoris

A

Origin: ischial tuberosity, femur
Insertion: fibula/tibula
Action: flex knee/ extend thigh

42
Q

Quadriceps group:

RECTUS FEMORIS

A

Origin: iliac spine/acetabulum
Insertion: Tibial tuberosity through patella
Action: extends leg, flexes thigh

43
Q

Quadriceps group

VASTUS LATERALIS

A

Origin: femur
Action: extends leg, stabilizes knee
Insertion: tibial tuberosity through patella

44
Q

Quadriceps group

VASTUS MEDIALIS

A

Origin: femur
Insertion: Tibial Tuberosity through patella
Action: extends leg, stabilizes patella

45
Q

Sartorius

A

Origin: anterior superior iliac spine
Insertion: by aponeurosis into medial aspect of proximal tibia
Action: flexes, abducts and laterally rotates thigh and flexes leg

46
Q

Gracilis

A

Origin: inferior ramus and body of pubis
Insertion: medial surface of tibia
Action: adducts thigh, flexes and medially rotates leg

47
Q

Semitendinosus

A

Origin: ischial tuberosity
Insertion: medial aspect of upper tibial shaft
Action: extends thigh, flexes leg, medially rotates leg

48
Q

Semimembranosus

A

Origin: ischial tuberosity
Insertion: medial condyle of tibia/lateral condyle of femur
Action: extends thigh/flexes leg

49
Q

Gastrocnemius

A

Origin: medial/lateral condyles of femur
Insertion: calcaneus
Action: plantar flexion

50
Q

Soleus

A

Origin: proximal portion of tibia, fibula
Insertion: calcaneus via cal sneak tendon
Action: plantar flexion

51
Q

Tibialis anterior

A

Origin: Lateral condyle and upper 2/3 of tibia
Insertion: By attending into inferior surface a first cuneiform of metatarsal I
Action: prime mover of dorsiflexion

52
Q

Extensor digitorum longus

A

Origin: Lateral condyle of tibia proximal 3/4 of fibula
Insertion: Inserts into middle and distal phalanges of toes II-5
Action: moves/extends toes

53
Q

Fibularis longus

A

Origin: Head and upper portion of fibula
Insertion: By long tendon underfoot to metatarsal one and medial cuneiform
Action: Plantar flexes and everts foot

54
Q

Flexor digitorum Longus

A

Origin: posterior surface of tibia
Insertion: distal phalanges of toes 2-5
Action: flexes toes, plantar flexes and inverts foot

Human A&P II (1 decks)

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