Unit 2

Question 1

study the skull fa real and read about sinuses in dissection guide

Answer 1

x

Question 2

what is the forelock

Answer 2

cranial extension of the mane

Question 3

what are the horn glands

Answer 3

sebaceous glands located caudomedial to the base of the horn bud

Question 4

infraorbital sinus

Answer 4

cutaneous pouch rostral to edial canthus of the eye and may be filled with fatty secretions

Question 5

cutaneous faciei muscle extends from

Answer 5

laryngeal region to the commissure of the mouth

Question 6

parotidoauricularis muscle attachments

Answer 6

fascia on the ventral part of the parotid salivary gland to the auricular cartilage of the ear

Question 7

what is the function of the parotidoauricularis muscle

Answer 7

draws the ear ventrally and caudally; involved in laying back the ears

Question 8

orbicularis oculi muscle attachments

Answer 8

medial palpebral ligament to upper and lower eyelids

Question 9

what is the function of the orbicularis oculi

Answer 9

acts as a sphincter to close the palpebral fissure

Question 10

orbicularis oculi is innervated by

Answer 10

auriculopalpebral nerve

Question 11

orbicularis oris muscle i located

Answer 11

within the stroma of the lips

Question 12

what is the function of the orbicularis oris

Answer 12

acts as a sphincter to close the lips

Question 13

what are the attachments of the zygomaticus m.

Answer 13

from the fascia covering the masster muscle to the commissure of the lips and blends with the buccinator muscle

Question 14

what is the function of the zygomaticus

Answer 14

retracts and elevates the angle of the mouth

Question 15

what are the attachments of the nasolabialis in the horse

Answer 15

form the frontal and nasal bones and then divides into 2 braches; dorsal branch goes to upper lip and lateral wing of the nostril; ventral branch courses to the commissure of the lips;

Question 16

what is the function of the levator nasolabialis muscle

Answer 16

upper lip and commissure and dilates the nostril

Question 17

what are the attachments of the levator nasolabialis muscle in ruminants

Answer 17

from the rostral part of the frontal bone and the frontalis msucle (in ox divides into superficial and deep portions that course to nostril and superior lip and to lateral nasal cartilages, incisive bone, and lateral part of the nostril)

Question 18

what is the function of the levator nasolabialis muscle ni ruminants

Answer 18

elevates the upper lip and commissure and dilates the nostril;

Question 19

in ox, what courses between the two branches of levator nasolabialis

Answer 19

the caninus muscle

Question 20

levator labii superioris muscle attachments in horse

Answer 20

junction of the lacrimal, zygomatic, and maxillary bones; upper lip

Question 21

what is the function of the levator labii superioris muscle

Answer 21

elevates the upper lip

Question 22

what are the attachments of the levator labii superioris muscle in rumants

Answer 22

facial tuberosity and inserts on the muzzle by way of several tendons

Question 23

what are the attachments of the dilator nares apicalis muscle in the horse

Answer 23

between alar cartilages of the nostril

Question 24

what is the function of the dilator nares apicalis muscle

Answer 24

dilates the nostrils

Question 25

what are the attachments of the caninus muscle in horses

Answer 25

between the two portions of the levator nasolabialis and inserts on the lateral wing of the nostril

Question 26

what is the function of the caninus muscle

Answer 26

dilates the nostril

Question 27

what are the attachments of the caninus muscle in ruminants

Answer 27

the facial tuberosity and inserts on the lateral portion of the nostril

Question 28

what are the attachments of the depressor labii inferioris in the ruminant

Answer 28

maxilla and facial tuberosity to the upper lip and ventral portion of nostril

Question 29

what is the function of the depressor labii inferioris m.

Answer 29

retracts the rostral portion of the upper lip and ventrolateral portion of the nostril

Question 30

what are the attachments of the depressor labii inferioris muscle

Answer 30

alveolar border of the mandible and inserts on the upper lip

Question 31

what is the function of the depressor labii inferioris muscle

Answer 31

depresses and retracts the lower lip

Question 32

what are the attachments of the rostral malaris muscle in the ruminant

Answer 32

facial part of the lacrimal bone and inserts on the buccal fascia dorsal to the buccinator muscle

Question 33

what is the function of the rostral malaris muscle

Answer 33

raises the caudal part of the cheek

Question 34

what are the attachments of the caudal part of the malarais muscle

Answer 34

the masseteric fascia and inserts on the lower eyelid

Question 35

what is the function of the caudal part of the malaris muscle

Answer 35

to depress the lower eyelid and widen the palpebral fissure

Question 36

what is the main muscle of the cheek

Answer 36

buccinator muscle

Question 37

what are the attachments of the buccinator muscle

Answer 37

from the alveolar bone of the mandible to the angle of the mouth

Question 38

what is the function of the buccinator muscle

Answer 38

flattens the cheek, pressing the food between the teeth; retracts the angle of the mouth

Question 39

in ruminants, what are the attachments of the frontalis muscle

Answer 39

from the base of the horn and intercornual protuberance to the upper eyelid and frontal region

Question 40

what is the function of the frontalis

Answer 40

elevates the superior palpebra and medial angle of the eye

Question 41

what passes through the ethmoid foramen

Answer 41

vessles and nerves pass through this foramen

Question 42

what passes through the stylomastoid foramen

Answer 42

the facial nerve

Question 43

what passes through the tympano-occipital fissure in ruminants

Answer 43

cranial nerves IX, X, XI

Question 44

What passes through the optic canal

Answer 44

optic nerve

Question 45

what passes through the orbital fissure

Answer 45

oculomotor, trochlear, ophthalmic, and abducens nerves

Question 46

what passes through the rostral alar canal

Answer 46

the maxillary artery

Question 47

what passes through the foramen lacerum in the horse

Answer 47

cranial nerves IX, X, XI

Question 48

In the equine skull, the oval foramen is replaced with the _______

Answer 48

oval notch

Question 49

what courses through the oval notch in the horse

Answer 49

the mandibular division of the trigeminal nerve

Question 50

what passes through the carotid notch

Answer 50

the internal carotid artery

Question 51

in ruminants, what passes through the foramen orbitorotundum

Answer 51

oculomotor, trochleaer, ophthalmic, and maxillary division of trigeminal nerve and abducens nerve