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35 Cards in this Set

  • Front
  • Back
How are facial muscles different from muscles of mastication
facial: involved with facial
expression
mastication: involved in raising
and lowering the jaw
What innervates facial muscles
facial nerve (cranial nerve VII)
What are circumoral glands in the cat, where are they more numerous, and what are their secretions used for
large sebaceous glands
more numerous on the lower lip
used for scent marking
Platysma m.
innervation and action
I: dorsal and ventral buccal
brs. and caudal auricular
br. of CN
VII
A: draw the commissure of
the lips caudally
Orbicularis oris m.
innervation and action
I: dorsal and ventral buccal
brs. of CN VII
A: close mouth, pull nose
downward during sniffing,
increase diameter of nostril
Buccinator m.
innervation and action
I: dorsal and ventral buccal
brs. of CN VII
A: move food from the
vestibule to the masticatory
surface of the teeth
Levator nasolabialis m.
innervation and action
I: auriculopalpebral br. of CN VII
A: dilate nostril and raise upper
lip
Zygomaticus m.
innervation and action
I: auriculopalpebral br. of CN
VII
A: draw commissure of the
mouth dorsocaudally; draw
the scutiform cartilage (and
ear) rostrally
Parotidoauricularis m.
innervation and action
I: CN VII
A: depress the ear
What are the two palpebral ligaments and what do they attach
medial: attaches the medial
palpebral commissure to the
frontal bone
Lateral: attaches the lateral
palpebral commissure to the
zygomatic bone
What do the palpebral conjunctiva and bulbar conjunctiva cover
PC: inner surface of the eyelid
BC: rostral part of the sclera
(continuous with outer layer of
cornea)
what is the junction of the palpebral and bulbar conjunctiva
conjunctival fornix
what is the space between the eyeball and the palpebrae
conjunctival sac
What are the tarsal glands, where do their ducts open, what is their secretion part of, where are they better developed
modified sebaceous glands
ducts open at the eyelid margin
secretion is part of the tear film
better dev in the upper eyelid
where are tears produced
lacrimal and superficial glands of the third eyelid
what is the name of the slit in the upper lip
philtrum
Orbicularis oculi m
innervation and action
I: palpebral brs. of
auriculopalpebral br. of CN VII
A: Closes palpebral fissure
Retractor anguli oculi lateralis m.
innervation and action
I: palpebral brs. of
auriculopalpebral br. of CN
VII
A: retracts the lateral angle of
the eye caudally
Levator anguli oculi medialis m.
innervation and action
I: palpebral brs. of
auriculopalpebral br. of CN VII
A: raises the eyelid
What are the 3 mm. of the eyelid
orbicularis oculi
retractor anguli oculi lateralis
levator anguli oculi medialis
what are the 3 cartilages of the ear
auricular cartilage
annular cartilage
scutiform cartilage
What is the helix of the right K9 ear
curved margins of the auricular cartilage
what is the anthelix of the right K9 ear
transverse ridge on the inner aspect of the auricle
what is the marginal cutaneous sac of the right K9 ear
skin pouch
what is the tragus of the right K9 ear
thick part of the auricular cartilage located laterally
what is the antitragus of the right K9 ear
ridge of cartilage located caudal to the tragus
what is the intertragic incisure of the right K9 ear
groove between the tragus and antitragus
what is the pretragic incisure of the right K9 ear
groove located rostral to the tragus
what separates the external and middle ear
the tympanic membrane
what are the auditory ossicles and where are they located
malleus, incus, stapes

in the tympanic cavity
what 2 mm. are located in the tympanic cavity
tensor tympani and stapedius
what connects the tympanic cavity with the nasopharynx
internal auditory (eustachian) tube
what portion of the inner ear is involved with the vestibular system
semicircular canals and vestibule cavities in the petrous temporal bone containing membranous semicircular canals, utricle and saccule
what portion of the inner ear is involved with hearing
cochlea cavity in the petrous temporal bone containing the membranous cochlear duct
what kind of fluid does the inner ear contain
perilymph and endolymph