Comparative Dig Tract of Head and Neck

Question 1

The ventral part of the face is formed by?

Answer 1

Oral cavity (Viscerocranium-splanchnocranium)

Question 2

The roof of the oral cavity is the made from the _______________

Answer 2

Palate

Question 3

The mandible and symphysis make up what part of the oral cavity?

Answer 3

The floor

Question 4

The part between the lips and the dental arcade is called?

Answer 4

Vestibule - labial + buccal parts

Question 5

Inside the dental arcade, the space is termed:

Answer 5

Oral cavity proper

Question 6

What attaches the tongue to the floor of the oral cavity?

Answer 6

Frenulum

Question 7

The rima oris are what part of the mouth?

Answer 7

Lips

Question 8

The division of the lips that extends from the nose to the oral fissure is called?

Answer 8

Philtrum

Question 9

The two types of salivary glands are __________ and ___________

Answer 9

serous and mucuous

Question 10

What is the landmark for the excretory duct located sublingually?

Answer 10

Sublingual caruncle

Question 11

List the salivary glands

Answer 11

• parotid
• mandibular
• sublingual
• zygomatic
• buccal

Question 12

Which salivary gland empties at the level of PM 4

Answer 12

Parotid gland

Question 13

Salivation, Digestion and Defense are function of?

Answer 13

Salivary glands

Question 14

Salivary glands can empty into what 2 spaces of the oral cavity?

Answer 14

The vestibule or the proper

Question 15

What structure is involved in apprehension, drinking, mastication, deglutition, and taste?

Answer 15

Tongue

Question 16

What two structures attach the tongue?

Answer 16

Hyoid and frenulum

Question 17

Which muscle supports the mandible and the tongue?

Answer 17

Myohyoideus

Question 18

The sensory organ associated with the tongue:

Answer 18

taste buds

Question 19

T/F sensory cells in taste buds regenerate

Answer 19

False - they are post mitotic

Question 20

Which structure defines the caudal border of the oral cavity?

Answer 20

Palatoglossal arch

Question 21

Describe the glossal innervation

Answer 21

Motor: CN 12 (hypoglossus)
Sensory: V3, 7, 9,10

Question 22

The intrinsic muscle of the tongue is the:

Answer 22

Lingualis proprius

Question 23

List the 3 extrinsic muscle of the tongue

Answer 23

• genioglossus
• styloglossus
• hyoglossus

Question 24

Filiform and conical papillae are mechanical or gustatory?

Answer 24

Mechanical

Question 25

What are the 3 gustatory papillae?

Answer 25

Foliate, vallate, fungiform

Question 26

What is a structure unique to the bovine tongue?

Answer 26

Lingual torus with fossa

Question 27

The hyoid apparatus is a derivative of what embryonic structure?

Answer 27

Branchial apparatus

Question 28

The ___________ separates the digestive from the respiratory tract.

Answer 28

Larynx

Question 29

The Cavity connecting the nasal cavity to the larynx and the oral cavity to the esophagus is the:

Answer 29

pharynx

Question 30

What is the attachment of the pharynx?

Answer 30

Deep fascia of the head

Question 31

In between what structures is the laryngopharynx?

Answer 31

Piriform recesses

Question 32

What is the pathology associated with the pharynx in equine?

Answer 32

Dorsal displacement of soft pallate / hypoplastic entrapment

Question 33

The 2 muscles of the soft palate are ?

Answer 33

- tensor veli palatini - levator veli palatini

Question 34

What is the only dilator of the pharynx?

Answer 34

Stylopharyngeus caudalis

Question 35

The diverticulum of the auditory tube is ______________

Answer 35

Guttural pouch

Question 36

What does the auditory tube connect?

Answer 36

The middle ear cavity with the nasopharynx

Question 37

Delineate the limits of Viborg's Triangle

Answer 37

- Sternomandibular mm - Linguofacial v - Ramus of the mandible

Question 38

The first line of defense of lymphatic tissue in the mouth is the ?

Answer 38

Tonsil

Question 39

In bovine, what is a species-specific structure associated with the tonsils?

Answer 39

The palatine tonsil has a sinus

Question 40

List some locations of the tonsils

Answer 40

- palatine - lingual - soft palate tonsil - pharyngeal - tubal

Question 41

What is the organ involved in deglutition and vocalization?

Answer 41

Larynx

Question 42

Describe the blood supply to the larynx

Answer 42

Cranial/Caudal laryngeal a

Question 43

What LN are associated with the larynx?

Answer 43

Retropharyngeal ln

Question 44

The entrance to the larynx is termed the _____________

Answer 44

Additus

Question 45

Which laryngeal cartilage is elastic?

Answer 45

Epiglottic

Question 46

List the 4 cartilages of the larynx

Answer 46

- epiglottic - thyroid - cricoid - arytenoid

Question 47

Thyrohyoideus and sternothyroideus are intrinsic or extrinsic muscles of the larynx?

Answer 47

Extrinsic

Question 48

Caudal laryngeal nn is the terminal branch of the __________________ nn, which are a branch of CN 10

Answer 48

Recurrent laryngeal nn

Question 49

How do you compensate in ET placement in horses?

Answer 49

By lifting the head

Question 50

Which muscle of mastication opens the oral cavity?

Answer 50

Digastricus

Question 51

What muscle helps coordinate mastication with the tongue?

Answer 51

Buccinator

Question 52

The coordinated actions of the muscles of the tongue and pharynx will allow _____________

Answer 52

Deglutition (swallowing)

Question 53

Where are the receptors that initiate the swallowing reflex?

Answer 53

In the soft palate

Question 54

The epiglottis closes the entrance to the larynx by doing what?

Answer 54

retroflexing from the intrapharyngeal ostium

Question 55

The infection of S. equii in foals that is associated with the thickening of the retropharyngeal LN is termed:

Answer 55

Strangles

Question 56

Describe the location of the esophagus

Answer 56

Dorsal to trachea then veers Left before entering thoracic cavity

Question 57

Describe the musculature of the esophagus

Answer 57

- striated - INvoluntary