Origin and Insertion

Question 1

What is the origin and insertion of the frontal is muscle? Action?

Answer 1

Origin: Cranial Aponeurosis
Insertion: skin of eyebrows
Action: raise eyebrows

Question 2

Orbicularis oculi origin and insertion action

Answer 2

O: Frontal bone and maxilla
I: Skin and Muscle around mouth
A: Blink/close eyes

Question 3

Orbicularis Oris

Answer 3

O: Mandible and Maxila
I: Skin and muscle around mouth
A: closes and protrudes lips

Question 4

Temporalis and Masseter

Answer 4

O: Temporal Bone
I: Mandible
A: closes jaw

Question 5

Zygomaticus

Answer 5

O: Zygomatic bone
I: skin and muscle at corner of lips
A: raises corner of mouth (smile)

Question 6

Buccinator

Answer 6

O: Maxilla and mandible near molars
I:Orbicularis oris
A: compresses cheek (sucking), holds food between teeth during chewing

Question 7

Sternocleidomastoid

Answer 7

O: sternum and clavicle
I: Mastoid proces and temporal bone
A:Flexes neck; laterally rotates head

Question 8

Platysma

Answer 8

O: Connective tissue covering of superior chest muscles
I: Tissue around mouth
A:Tenses skin of neck

Question 9

Pec Major

Answer 9

O: sternum, clavicle, 1st-6th ribs
I: Proximal humerous: Greater tubercle of humerous
A: Adducts and flexes humerous

Question 10

Pec Minor

Answer 10

O: Anterior surface of ribs 3-5
I:Coracoid process of scapula
A: Draw scapula fwd and dwd w/ ribs fixed draws rib cage superior with fixed scapula

Question 11

Rectus Abdominis

Answer 11

O:Pubis, Pubic crest, and adjacent ligament
I: Xiphoid process 5th and 7th ribs
A:Flexes vertebral column

Question 12

Transverse abdominis

Answer 12

O:costal cartilage of lwr 6th ribs
       Inguinal ligament
            lumbodorsal fascia
I: Linea alba and pubic crest
A: compresses ab controls

Question 13

Internal Oblique

Answer 13

O: Anterior 2/3’s iliac crest, inguinal ligament, fascia sheaths
I: lower 3-4 ribs, pubic crest, line alba
A: flexes and rotates vertbral column

Question 14

Ext Oblique

Answer 14

O: Lower 8 ribs
I: Iliac crest
A: flexes and rotates vertebral column

Question 15

Serratus anterior

Answer 15

O: series of muscles slips from ribs 1-8
I;anterior surface of vertebral border of scapula
A; PM to protract and hold scapula angst chest wall rotate scar wall

Question 16

Trapezius

Answer 16

O: Occipital bone, spinous process of c7 and all thoracic vertebra
I: Scapular spine and clavicle
A: raises, retracts, and rotates scapula

Question 17

Quadratus lumborum

Answer 17

O: iliac crest, iliolumbar fascia
I: Transverse process of upper lumbar vert
A: along with the erector spine it extends and flexes sp laterally

Question 18

Deltoid

Answer 18

O: scapular spine, clavicle
I: Deltoid tuberosity of humorous
A: Abducts Humerous and is PM

Question 19

Who is the deltoids antagonist?

Answer 19

lat dorsi and pec major because they adduct humorous

Question 20

Supraspinatus

Answer 20

O: supraspinatus fossa
I: superior most part if greater tubercle of humorous
A:Abduction arm, stabilize SJ aides with pref dad dislocation of humerous

Question 21

subscapularus

Answer 21

O: subscapularis fossa
I: Lesser tubercle
A: Medial arm rotation and helps hold head of humorous in the glenoid cavity

Question 22

Infraspinatus

Answer 22

O: infraspinatus fossa
I: Greater tubercle
A: lateral arm rotation and helps to hold head of humorous in glenoid cavity

Question 23

Teres Major

Answer 23

O: Post/dorsal surface of inferior angle of scapula
I: crest of lesser tubercle
A: extends, medially rotate and adducts humorous and synergists to lat dorsi

Question 24

Teres Minor

Answer 24

O: Lateral border of dorsal scapular surface
I:greater tubercle
A:lateral rotates humorous, holds head of humorous in glenoid cavity