Anatomy Exam 3: Muscle Origin/insertion/action/innervation

Front 1

masseter origin

Back 1

inferior border and medial surface of maxillary process of zygomatic bone and the zygomatic arch

Front 2

masseter insertion

Back 2

angle & lateral surface of ramus of mandible

Front 3

masseter innervation

Back 3

Masseteric N (of Trigeminal CN V3)

Front 4

masseter action

Back 4

Elevate mandible

ipsilateral grinding

Front 5

temporalis origin

Back 5

triangular muscle with broad attachment to floor of temporal fossa and deep surface of temporal fascia

Front 6

temporalis insertion

Back 6

narrow attachment to tip and medial surface of coronoid process

anterior border of ramus of mandible

Front 7

temporalis innervation

Back 7

Deep Temporal N (of Trigeminal CN V3)

Front 8

temporalis action

Back 8

Anterior fibers- elevate mandible

posterior fibers- retract mandible

Front 9

Medial Pterygoid origin

Back 9

(1) medial surface of lateral ptergoid plate and pyramidal process of palatine bone

(2) tuberosity of maxilla

Front 10

Medial Pterygoid insertion

Back 10

medial surface of ramus of mandible, inferior to mandibular foramen

Front 11

Medial Pterygoid innervation

Back 11

N to the Medial Pterygoid (of Trigeminal CN V3)

Front 12

Medial Pterygoid action

Back 12

Elevate mandible

contralateral grinding

Front 13

Lateral Pterygoid origin

Back 13

(1) Infratemporal surface and crest of greater wing of sphenoid

(2) lateral surface of lateral ptergoid plate

Front 14

Lateral Pterygoid insertion

Back 14

Pit on the anterior neck of the mandible

articular disc of the TMJ

Front 15

Lateral Pterygoid innervation

Back 15

N to the Lateral Pterygoid (of the Trigeminal CN V3)

Front 16

Lateral Pterygoid action

Back 16

Protrusion of the mandible

depression of mandible by pulling the head of the mandible forward over the descending slope of the articular tubercle

Front 17

superior rectus innervation

Back 17

Oculomotor CN III

Front 18

superior rectus action

Back 18

Elevate eyeball (look up)

Front 19

inferior rectus innervation

Back 19

Oculomotor CN III

Front 20

inferior rectus action

Back 20

Depress eyeball (look down)

Front 21

medial rectus innervation

Back 21

Oculomotor CN III

Front 22

medial rectus action

Back 22

Adduct eyeball (look in/medially)

Front 23

lateral rectus innervation

Back 23

Abducens CN VI

Front 24

lateral rectus action

Back 24

Abduct eyeball (look out/laterally)

Front 25

superior oblique innervation

Back 25

Trochlear CN IV

Front 26

superior oblique action

Back 26

Depress and abduct eyeball (look down and out/laterally)

Front 27

Inferior Oblique innervation

Back 27

Oculomotor CN III

Front 28

Inferior Oblique action

Back 28

Elevates and abducts (look up and out/laterally)

Front 29

Levator Palpebrae Superioris innervation

Back 29

Oculomotor CN III

Inferior part (Superior Tarsal Muscle): Postganglionic Sympathetic fibers of Carotid Plexus

Front 30

Levator Palpebrae Superioris action

Back 30

Elevate superior eyelid

Front 31

Tensor Vali Palatini innervation

Back 31

Medial pterygoid n. (branch of CN V-3) via otic ganglion

Front 32

Tensor Vali Palatini action

Back 32

Tenses soft palate (to change tone of voice), opens mouth of pharyngotympanic tube during swallowing and yawning

Front 33

Levator Veli Palatini innervation

Back 33

Pharyngeal branch of CN X via pharyngeal plexus

Front 34

Levator Veli Palatini action

Back 34

Elevates soft palate during swallowing and yawning

Front 35

Palatoglossus innervation

Back 35

Vagus nerve CN X

Front 36

Palatoglossus action

Back 36

Elevates posterior part of tongue

Front 37

Palatopharyngeus innervation

Back 37

Pharyngeal branch of CN X via pharyngeal plexus

Front 38

Palatopharyngeus action

Back 38

Tenses soft palate and pulls walls of pharynx superiorly, anteriorly, and medially during swallowing

Front 39

Musculus Uvulae innervation

Back 39

Pharyngeal branch of CN X via pharyngeal plexus

Front 40

Musculus Uvulae action

Back 40

Shortens uvula and pulls it superiorly, unilateral action sweeps uvula to allow for clearance of phlegm – wipes posterior pharyngeal wall from side to side

Front 41

Genioglossus origin

Back 41

via a short tendon from superior part of mental spine of mandibl

Front 42

Genioglossus insertion

Back 42

entire dorsum of tongue

inferiormost and posteriormost fibers attach to body of hyoid bone

Front 43

Genioglossus innervation

Back 43

hypoglossal N (CN XII)

Front 44

Genioglossus action

Back 44

depresses and protrudes the tongue

Front 45

Hyoglossus innervation

Back 45

hypoglossal N (CN XII)

Front 46

Hyoglossus action

Back 46

depresses and retracts tongue

Front 47

Styloglossus innervation

Back 47

hypoglossal N (CN XII)

Front 48

Styloglossus action

Back 48

retracts and elevates the sides of tongue to create a trough for swallowing

Front 49

superior pharyngeal constrictor insertion

Back 49

insert into the median raphe posteriorly

Front 50

superior pharyngeal constrictor innervation

Back 50

Vagus nerve CN X

Front 51

superior pharyngeal constrictor action

Back 51

constrict walls of pharynx during swallowing

Front 52

middle pharyngeal constrictor insertion

Back 52

insert into the median raphe posteriorly

Front 53

middle pharyngeal constrictor innervation

Back 53

Vagus nerve CN X

Front 54

middle pharyngeal constrictor action

Back 54

constrict walls of pharynx during swallowing

Front 55

inferior pharyngeal constrictor insertion

Back 55

insert into the median raphe posteriorly.

Front 56

inferior pharyngeal constrictor innervation

Back 56

Vagus nerve CN X

Front 57

inferior pharyngeal constrictor action

Back 57

constrict walls of pharynx during swallowing

(Cricopharyngeus part of this muscle relaxes during swallowing. This action allows food and fluid to enter the upper end of the esophagus)

Front 58

tensor tympani muscle action

Back 58

functions to dampen or attenuate vibration of tympanic membrane

Front 59

tensor tympani muscle innervation

Back 59

CN V3

Front 60

Stapedius innervation

Back 60

CN VII facial nerve

Front 61

Stapedius action

Back 61

functions to prevent excessive movement

Front 62

External intercostals origin

Back 62

Inferior border of ribs

Front 63

external intercostals insertion

Back 63

Fibers run inferomedially to attach onto the superior border of the rib below

Front 64

external intercostals innervation

Back 64

Intercostal N

Front 65

external intercostals action

Back 65

Elevate ribs during forced inspiration

Front 66

internal intercostals origin

Back 66

inferior border of ribs

Front 67

internal intercostals insertion

Back 67

Fibers run inferolaterally to attach onto the superior border of the rib below

Front 68

internal intercostals innervation

Back 68

Intercostal N

Front 69

internal intercostals action

Back 69

Depresses ribs during forced expiration

Front 70

innermost intercostals origin

Back 70

inferior border of ribs

Front 71

innermost intercostals insertion

Back 71

Fibers run inferolaterally to attach onto the superior border of the rib below

Front 72

innermost intercostals innervation

Back 72

intercostal nerve

Front 73

innermost intercostals action

Back 73

Depresses ribs during forced expiration`

Front 74

Transversus Thoracis origin

Back 74

posterior surface of lower sternum

Front 75

Transversus Thoracis insertion

Back 75

internal surface of costal cartilages 2-6

Front 76

Transversus Thoracis innervation

Back 76

intercostal nerve

Front 77

Transversus Thoracis action

Back 77

depresses the ribs

Front 78

origin of tensor tympani muscle

Back 78

Superior surface of the cartilaginous part of the pharyngotympanic tube

greater wing of the sphenoid

petrous part of the temporal bone

Front 79

insertion of tensor tympani muscle

Back 79

handle of the malleus

Front 80

origin of stapedius muscle

Back 80

Apex of the pyramidal eminence

Front 81

insertion of stapedius muscle

Back 81

neck of stapes