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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
Bicepts Brachii
Origin: coracoid process Insertion: radial tuberosity Action: flexes elbow
26
Triceps Brachii
Origin: humerus Insertion: olecranon process Action: extends elbow
27
Brachialis
Origin: distal portion of anterior humerus Insertion: coronoid process of ulna Action: flex or if forearm
28
Brachi Oradialis
Origin: lateral ridge at royal end of humerus Insertion: base of radial styloid process Action: synergist in forearm flexion
29
Pronator Teres
Origin: medial epicondyle or humerus and coronoid process of ulna Insertion: midshaft of radius Action: pronate forearm
30
Flexor Carpi Radialis
Origin: medial epicondyle of humerus Insertion: base of metacarpals I and III Action: powerful flexor and abductor of the hand
31
Palmaris Longus
Origin: medial epicondyle of humerus Insertion: palmar aponeurosis/ skin and fascia of palm Action: flexes hand, tenses skin and fascia of palm
32
Flexor Carpi Ulnaris
Origin: medial epicondyle of humerus and olecranon Insertion: base of metacarpal V Action: flexes and adducts hand
33
Supinator
Origin: lateral epicondyle of humerus, proximal ulna Insertion: proximal end of radius Action: synergist of bicepts Brachii to supinate forearm
34
Extensor Digitorium
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
Extensor Carpi Ulnaris
Origin: lateral epicondyle of humerus Insertion: base of metacarpal V Action: Extends and adducts hand
36
Gluteus Maximus
Origin: dorsal ilium, sacrum, coccyx Insertion: gluteal tuberosity of femur and iliotibal tract Action: powerful thigh extensor
37
Gluteus Medius
Origin: upper lateral surface of ilium Insertion: greater trochanter of femur Action: Abducts and medically rotates thigh, steadies pelvis while walking
38
Tensor fasciae latae
Origin: anterior iliac crest Insertion: iliotibal tract Action: flexes/abducts and medically rotates thigh and steadies trunk
39
Adductor Longus
Origin: pubis Insertion: linea aspera Action: adduct and medially rotate/flex thigh
40
Adductor Magnus
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
Bicepts Femoris
Origin: ischial tuberosity, femur Insertion: fibula/tibula Action: flex knee/ extend thigh
42
Quadriceps group: | RECTUS FEMORIS
Origin: iliac spine/acetabulum Insertion: Tibial tuberosity through patella Action: extends leg, flexes thigh
43
Quadriceps group | VASTUS LATERALIS
Origin: femur Action: extends leg, stabilizes knee Insertion: tibial tuberosity through patella
44
Quadriceps group | VASTUS MEDIALIS
Origin: femur Insertion: Tibial Tuberosity through patella Action: extends leg, stabilizes patella
45
Sartorius
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
Gracilis
Origin: inferior ramus and body of pubis Insertion: medial surface of tibia Action: adducts thigh, flexes and medially rotates leg
47
Semitendinosus
Origin: ischial tuberosity Insertion: medial aspect of upper tibial shaft Action: extends thigh, flexes leg, medially rotates leg
48
Semimembranosus
Origin: ischial tuberosity Insertion: medial condyle of tibia/lateral condyle of femur Action: extends thigh/flexes leg
49
Gastrocnemius
Origin: medial/lateral condyles of femur Insertion: calcaneus Action: plantar flexion
50
Soleus
Origin: proximal portion of tibia, fibula Insertion: calcaneus via cal sneak tendon Action: plantar flexion
51
Tibialis anterior
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
Extensor digitorum longus
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
Fibularis longus
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
Flexor digitorum Longus
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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