1
Q
Origin, inserition, and action of:
Buccinator
A
- O: Maxilla + Mandible
- I: Obicularis oris
- A: Compresses cheek
2
Q
Origin, inserition, and action of:
Occipitofrontalis (frontal belly)
A
- O: Epicrannial aponeurosis
- I: Skin of eyebrows, roof of nose
- A: Raises eyebrows
3
Q
Origin, inserition, and action of:
Occipitofrontalis (occipital belly)
A
- O: Occipital + temporal bones
- I: Epicranial aponeurosis
- A: Fixes aponeurosis and pulls scalp posteriorly
4
Q
Origin, inserition, and action of:
Orbicularis oculi
A
- O: Frontal + Maxilary bones
- I: Tissue of eyelid
- A: Closes eye
5
Q
Origin, inserition, and action of:
Masseter
A
- O: Zygomatic arch + bone
- I: Mandible
- A: Prime jaw closer
6
Q
Origin, inserition, and action of:
Temporalis
A
- O: Temporal fossa
- I: Coronoid process of mandible
- A: Closes jaw
6
Q
Origin, inserition, and action of:
Orbicularis oris
A
- O: Maxilla + Mandible
- I: Muscle + skin at mouth
- A: Closes lips
6
Q
Origin, inserition, and action of:
Sternocleidomastoid
A
- O: Manubrium of sternum
- I: Temporal bone (mastoid process), occipital bone
- A: Flexes and laterally rotates head
7
Q
Origin, inserition, and action of:
Risorius
A
- O: Fascia of masseter muscle
- I: Skin of mouth
- A: Pulls corner of lip laterally
8
Q
Origin, inserition, and action of:
Trapezius
A
- O: Occipital bone, ligamentum nuchae, C7 (SP)
- I: Aromion + Spine of scapula
- A: Stabilizes, elevates, retracts, and rotates scapula
9
Q
Origin, inserition, and action of:
Zygomaticus major
A
- O: Zygomatic bone
- I: Skin + Muscle at corner of mouth
- A: Raises lateral corners of mouth
9
Q
Origin, inserition, and action of:
Deltoid
A
- O: Clavicle, aromion + spine of scapula
- I: Deltoid tuberosity of humerus
- A: Arm abduction, extension, and flexion
10
Q
Origin, inserition, and action of:
Infraspinatus
A
- O: Infraspinous foss aof scapula
- I: Humerus
- A: Rotates arm laterally
10
Q
Origin, inserition, and action of:
Latissimus dorsi
A
- O: Lower 6 thoracic vert, lumbar vert, iliac crest
- I: Humerus
- A: Arm extension, arm adductor, medially rotates arm
11
Q
Origin, inserition, and action of:
Pectoralis major
A
- O: Clavicle, sternum, cartilage of ribs
- I: Humerus
- A: Adducts + medially rotates arm
12
Q
Origin, inserition, and action of:
Supraspinatus
A
- O: Supraspinous fossa of scapula
- I: Humerus
- A: Initiates arm abduction
12
Q
Origin, inserition, and action of:
Serratus anterior
A
- O: Ribs 1-8/9
- I: Medial border of scapula
- A: Rotates scapula
13
Q
Origin, inserition, and action of:
Subscapularis
A
- O: Subscapular fossa of scapula
- I: Humerus
- A: Rotates arm medially
14
Q
Origin, inserition, and action of:
Teres major
A
- O: Scapula
- I: Humerus
- A: Extends, medially rotates, and adducts arm
15
Q
Origin, inserition, and action of:
Teres minor
A
- O: Scapula
- I: Humerus
- A: Rotates arm laterally
16
Q
Origin, inserition, and action of:
Trapezius
A
- O: Occipital bone, C7, all thoracic vert
- I: Acromion + spine of scapula, clavicle
- A: Stabilizes, elevates, retracts, and rotates scapula
17
Q
Origin, inserition, and action of:
Biceps brachii
A
- O: Coracoid process of scapula, humerus
- I: Radial tuberosity
- A: Flexes + Supinates forearm
18
Q
Origin, inserition, and action of:
Brachialis
A
- O: Humerus
- I: Coronoid process of ulna
- A: Forearm flexor
19
Q
Origin, inserition, and action of:
Triceps brachii
A
- O: Scapula, humerus, ulna
- I: Olecranon of ulna
- A: Powerful forarm extensor
20
# Origin, inserition, and action of:
Brachioradialis
* O: Humerus
* I: Radial styloid process
* A: Synergist in flexing forearm
21
# Origin, inserition, and action of:
Extensor carpi radialis brevis
* O: Lateral epicondyle of humerus
* I: 3rd metacarpal
* A: Extend + abducts hand
22
# Origin, inserition, and action of:
Extensor carpi radialis longus
* O: Humerus
* I: 2nd metacarple
* A: Extends + Abducts hand
23
# Origin, inserition, and action of:
Extensor carpi ulnaris
* O: Lateral epicondyle of humerus, ulna
* I: Base of 5th metacarple
* A: Extends + adducts hand
24
# Origin, inserition, and action of:
Extensor digitorum
* O: Lateral epicondyle of humerus
* I: Distal phalanges (2nd-5th)
* A: Prime finger extensor
25
# Origin, inserition, and action of:
Flexor carpi radialis
* O: Medial epicondyle of humerus
* I: Metacarpals (2nd-3rd)
* A: Powerful flexor of hand
26
# Origin, inserition, and action of:
Flexor carpi ulnaris
* O: Medial epicondyle of humerus, olecranon of ulna
* I: Pisiform and hamate (carpals)
* A: Flexor + adductor of hand
27
# Origin, inserition, and action of:
Palmaris longus
* O: Medial epicondyle of humerus
* I: Fascia of palm
* A: Tenses skin + fascia of plam during hand movements
28
# Origin, inserition, and action of:
Pronator teres
* O: Medial epicondyle of humerus, coronoid process of ulna
* I: Radius
* A: Pronates forearm
29
# Origin, inserition, and action of:
Adductor longus
* O: Pubis
* I: Linea aspera
* A: Adducts, flexes, and medially rotates thigh
30
# Origin, inserition, and action of:
Adductor magnus
* O: Ischial + pubic rami, ischial tuberosity
* I: Linea aspera, femur
* A: Adducts, medially rotates, and flexes thigh
31
# Origin, inserition, and action of:
Gracillis
* O: Pubis
* I: Tibia (inferior to medial condyle)
* A: Adducts thigh flexes and medially rotates leg
32
# Origin, inserition, and action of:
Illiopsoas (Illiacus)
* O: Iliac fossa, sacrum
* I: Lesser torrchanter of femur
* A: Flexing thigh + trunk
33
# Origin, inserition, and action of:
Illiopsoas (Psoas major)
* O: Lumbar vert. + T12
* I: Lesser trochanter of femur
* A: Flexing thigh + trunk, flexes vert. column laterally
34
# Origin, inserition, and action of:
Pectineus
* O: Pubis
* I: Lesser trochanter of femur
* A: Adducts, flexes, and medially rotates thigh
35
# Origin, inserition, and action of:
Quadriceps femoris (rectus femoris)
* O: Iliac spine, acetabulum
* I: Patella, tibial tuberosity
* A: Extends leg + stabilizes knee
36
# Origin, inserition, and action of:
Quadriceps femoris (Vastus lateralis)
* O: Greater trochanter of femur, linea aspera
* I: Patella, tibial tuberosity
* A: Extends leg + stabilizes knee
37
# Origin, inserition, and action of:
Quadriceps femoris (Vastus medialis)
* O: Linea aspera, femur
* I: Patella, tibial tuberosity
* A: Extends leg
38
# Origin, inserition, and action of:
Sartorius
* O: Iliac spine
* I: Tibia
* A: Flexes, abducts, and laterally rotates thigh
39
# Origin, inserition, and action of:
Tensor fascia latae
* O: femur
* I: Iliotibial tract
* A: Steadies leg + trunk on thigh
40
# Origin, inserition, and action of:
Gluteus maximus
* O: Ilium, sacrum, coccyx
* I: Femur, iliotibial tract
* A: Extensor of thigh
41
# Origin, inserition, and action of:
Gluteus medius
* O: Ilium
* I: Greater torchanter of femur
* A: Abducts + medially rotates thigh
42
# Origin, inserition, and action of:
Hamstrings (Biceps femoris)
* O: Ischium, femur
* I: Fibula + tibia
* A: Extends thigh + flexes leg
43
# Origin, inserition, and action of:
Hamstrings (Semimembranosus)
* O: Ischial tuberosity
* I: Tibia + Femur
* A: Extends thigh + flexes leg
44
# Origin, inserition, and action of:
Hamstrings (semitendinosus)
* O: Ischial tuberosity
* I: Shaft of tibia
* A: Extends thigh + flexes leg
45
# Origin, inserition, and action of:
Fibularis (peroneus) longus
* O: Head of fibula
* I: 1st metatarsal + tarsals
* A: Plantarflexes + everts foot
45
# Origin, inserition, and action of:
Extensor digitorum longus
* O: Lateral condyle of tibia, fibula
* I: Phalanges 2-5
* A: Toe extensiom
46
# Origin, inserition, and action of:
Gastrocnemius
* O: Medial + lateral condyles of femur
* I: Calcaneus
* A: Plantarfexes foot
47
# Origin, inserition, and action of:
Soleus
* O: Tibia + Fibula
* I: Calcaneus
* A: Plantarflexes foot
48
# Origin, inserition, and action of:
Tibialis anterior
* O: Lateral condyle of tibia
* I: Tarsals + 1st metatarsal
* A: Dorsiflexion
49
# Origin, inserition, and action of:
Rectus abdominis
* O: Pubic crest + symphysis
* I: Xiphoid process + costal cartilages (5-7)
* A: Flex + rotate lumbar region of vert. column
50
# Origin, inserition, and action of:
External abdominal oblique
* O: Lower 8 ribs
* I: Linea alba, pubic crest, iliac crest
* A: Flex vert. column + compress abdominal wall, trunk rotation + lateral flexion
BIOL 1410 LAB
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