Muscles of the Head Flashcards Preview

Anatomy > Muscles of the Head > Flashcards

Flashcards in Muscles of the Head Deck (43):
1

Rostral Auricular Mm

Mimetic M

Origin:

Insertion: Auricular or scutiform cartilage

Innervation: Facial N

Action: attention

2

Caudal Auricular Mm

Mimetic M

Origin: Median raphe of neck

Insertion: Auricular or scutiform cartilage

Innervation: Facial N

Action: Lay ears caudally

3

Platysma

Mimetic M

Origin: Dorsal median raphe

Insertion: Angle of mouth

Innervation: Facial N

Action: Draw lips caudally

4

Zygomaticus

Mimetic M

Origin: Scutiform cartilage

Insertion: Angle of mouth

Innervation: Facial N

Action: Retract angle of mouth

5

Parotidoauricularis

Mimetic M

Origin: ventral cervical fascia

Insertion: Auricular concha (funnel shaped part of auricle)

Innervation: Facial N

Action:Depresses auricular cartilage

6

Orbicularis oris

Mimetic M

Origin: One lip to the other around angle of mouth

Insertion: 

Innervation: Facial N

Action: Sphincter of mouth

7

Buccinator

Mimetic M

Origin: Alveolar margins of madible and maxilla

Insertion: Angle of mouth and border of the lips

Innervation: Facial N

Action: Return food from vestibule to occlusal surface

8

Lavator nasolabialis

Mimetic M

Origin: Maxillary bone

Insertion: Edge of superior lip and naris

Innervation: Facial N

Action: Dilates nose, raises superior lip

9

Caninus (not on the structures list)

Mimetic M

Origin: 

Insertion: Upper lip

Innervation: Facial N

Action: Dilates nostril, raises superior lip

10

Orbicularis oculi

Mimetic M

Origin: N=Medial palpebral ligament

Insertion: Medial palpebral ligament

Innervation: Facial N

Action: Sphincter of eyelids

11

Retractor anguli oculi lateralis

Mimetic M

Origin: Temporalis fascia

Insertion: Lateral ocular angle

Innervation: Facial N

Action: Close palpebral fissure

12

Cricopharyngeus

Pharyngeal M

Origin: Lateral surface of cricoid cartilage

Insertion: Median dorsal raphe of laryngopharynx, esophagus caudally

Innervation: Pharyngeal branches of CN IX & X

Action: Swallowing

13

Thyropharyngeus

Pharyngeal M

Origin: Lateral side of thyroid cartilage

Insertion: Median dorsal raphe of the pharynx

Innervation: Pharyngeal branches of CN IX & X

Action: Swallowing

14

Hyopharyngeus

Pharyngeal M

Origin: Lateral surface of thyrohyoid bone & ceratohyoid bone

Insertion: Median dorsal raphe of the pharynx

Innervation: Pharyngeal branches of CN IX & X

Action: Swallowing

15

Palatopharyngeus

Pharyngeal M

Origin: Soft palate

Insertion: Lateral and dorsal wall of pharynx

Innervation: Pharyngeal branches of IX & X

Action: Contrict and shorten pharynx

16

Pterygopharyngeus

Pharyngeal M

Origin: Pterygoid bone

Insertion: Dorsal wall of pharynx

Innervation: Pharyngeal branches of IX & X

Action: Contrict and shorten pharynx

17

Stylopharyngeus

Pharyngeal M

Origin: Stylohyoid bone

Insertion: Dorsolateral wall of pharynx

Innervation: Pharyngeal Branches of CN IX & X

Action: Dilate pharynx

18

Levator veli paltini

Pharyngeal M

Origin: Tympanic part of temporal bone

Insertion: Pterygoid bone

Innervation: Pharngeal branches of CN IX and X

Action: Raises caudal end of the soft palate

19

Tensor veli palatini

Pharyngeal M

Origin: Cartilaginous wall of auditory tube

Insertion: Ptrygoid bone and soft palate

Innervation: Mandibular N (of CN V)

Action: Stratch soft palate

20

Sternothyroideus

Laryngeal M

Origin: 1st costal cartilage

Insertion: Caudolateral surface of thyroid cartilage

Innervation: Ventral branches of cervical spinal Nn

Action: Draw larynx and tongue caudally

21

Cricothyroid

Laryngeal M

Origin: Cricoid cartilage

Insertion: Thyroid lamina

Innervation: Cranial Laryngeal N

Action: Tenses vocal fold

22

Cricoarytenoideus dorsalis

Laryngeal M

Origin: Dorsolateral surface of cricoid cartilage

Insertion: Muscular process of arytenoid cartilage

Innervation: Caudal Laryngeal N

Action: Opens glottis

23

Cricoarytenoideus lateralis

Laryngeal M

Origin: Lateral surface of cricoid cartilage

Insertion: Arytenoid cartilage

Innervation: Caudal Laryngeal N

Action: Close glottis

24

Thyroarytenoideus (not on list)

Laryngeal M

Origin: Internal midline of thyroid cartilage

Insertion: Arytenoid cartilage

Innervation: Caudal Laryngeal N

Action: Relax vocal fold and contrict glottis

25

Vocalis (medial part of thyroarytenoideus)

Laryngeal M

Origin: Internal midline of thyroid cartilage

Insertion: Vocal process of arytenoid cartilage

Innervation: Caudal Laryngeal N

Action: Relax vocal fold

26

Arytenoideus transversus (not on list)

Laryngeal M

Origin: Arytenoids

Insertion: 

Innervation: Caudal Laryngeal N

Action: Dilates glottis

27

Temporalis

M of Mastication

Origin: Temporal fossa

Insertion: Coranoid process of mandible

Innervation: Mandibular N (of CN V)

Action: Raise mandible to close mouth

28

Masseter

M of Mastication

Origin: Zygomatic arch

Insertion: Masseteric fossa, ventrolateral surface of ramus of mandible, angular process

Innervation: Mandibular N (of CN V)

Action: Close jaw

29

Medial and lateral pterygoid

M of Mastication

Origin: Pterygopalatin fossa

Insertion: medial surface and caudal margin of the ramus of mandible and angular process

Innervation: Mandibular N (of CN V)

Action: Close jaw, Lateral: draw mandible rostrally

30

Digastricus

M of Mastication

Origin: Paracondylar process of occipital bone

Insertion: Body of mandible

Innervation: Rostral part- mandibular N; Caudal part- facial N

Action: Open jaws

31

Styloglossus

Lingual M

Origin: Stylohyoid bone

Insertion: Middle of tongue

Innervation: hypoglossal N

Action: Retract and elevate tongue

32

Hyoglossus

Lingual M

Origin: thyrohyoid and basihyoid bone

Insertion: root of tongue

Innervation: hypoglossal N

Action: Depresses tongue

33

Genioglossus

Lingual M

Origin: Intermandibular articulation and adjacent surface of body of mandile

Insertion: Median plane of tongue

Innervation: hypoglossal N

Action: Caudal fibers protrude tongue, rostral fibers retraact apex

34

Sternohyoideus

Hyoid M

Origin: Sternum, 1st costal cartilage

Insertion: Basihyoid bone

Innervation: Ventral branches of cervical spinal Nn adn Hypoglossal N

Action: Pull tongue and larynx caudally

35

Thyrohyoideus

Hyoid M

Origin: Thyroid cartilage

Insertion: Thyrohyoid bone

Innervation: Ventral branches of cervical spinal Nn adn Hypoglossal N

Action: Pull hyoid caudally, larynx rostrally

36

Mylohyoideus

Hyoid M

Origin: Medial surface of body of mandible

Insertion: Fellow muscle on midventral raphe; caudally inserts on basihyoid

Innervation: Mandibular N

Action: Support tongue

37

Geniohyoideus

Hyoid M

Origin: Intermandibular articulation

Insertion: Basihyoid

Innervation: Hypoglossal N

Action: Draw hyoid and larynx rostrally

38

Levator palpebrae superioris

Eye M

Origin: apex of orbit

Insertion: Upper eyelid

Innervation: Oculomotor N

Action: Lift upper eyelid

39

Dorsal, Medial, and Ventral Rectus Mm

Eye Mm

Origin: Bone next to the optic canal and orbitl fissure

Insertion: Sclera

Innervation: Oculomotor N

Action: Dorsal- rotate globe dorally on x -axis; Ventral- rotate globe ventrally on x-axis; Medial- rotate globe medially on y-axis

40

Lateral Rectus M

Eye M

Origin: Bone next to the optic canal and orbital fissure

Insertion: Sclera

Innervation: Abducent N

Action: Rotate globe laterally on y-axis

41

Retractor bulbi

Eye M

Origin: Suround optic N

Insertion: 

Innervation: Abducent N

Action: Retract globe

42

Dorsal oblique

Eye M

Origin: Bone near medial border of optic canal; Long tendon rostrally passes through trochlea on medial angle of eye

Insertion: Sclera at insertion of dorsal rectus

Innervation: Trochlear N

Action: Rotate globe on z-axis (left eye- counter-clockwise; right eye- clockwise)

43

Ventral oblique

Eye M

Origin: Rostral border of the palatine bone 

Insertion: Sclera at insertion of lateral rectus

Innervation: Oculomotor N

Action: Rotate globe on z-axis(left eye- clockwise; right eye- counter-clockwise)