Exam 3: Paranasal Sinuses and Guttural Pouches

Question 1

Air-Filled, mucous membrane lined diverticula of nasal cavity

Answer 1

sinuses

Question 2

Which bones of the skull contain sinuses?

Answer 2

nasal, frontal, maxillary

Question 3

What are 4 functions of sinuses?

Answer 3

1. thermal protection
2. mechanical protection
3. dec. wt. of skull
4. resonance of voice

Question 4

Clinical significance of sinuses?

Answer 4

1. Trauma
2. Association with dentition
3. neoplasia
4. infection

Question 5

What are the 5 sinuses in animals?

Answer 5

1. palatine
2. sphenoid
   3 frontal
3. maxillary
4. lacrimal

Question 6

Which sinus is absent in pigs and carnivors?

Answer 6

palatine

Question 7

Which sinus is absent in dogs and small ruminants?

Answer 7

sphenoid

Question 8

Which sinus is present in pigs and ruminants, and is an extension of the maxillary sinus

Answer 8

lacrimal

Question 9

The paranasal sinus of the horse is made up of which 2 sinuses?

Answer 9

1. frontal

2. maxillary

Question 10

The frontal sinus plus the dorsal concha are together called:

Answer 10

conchofrontal sinus

Question 11

The maxillary sinus invades which concha?

Answer 11

ventral

Question 12

Maxillary sinus is divided into two parts:

Answer 12

1. rostral

2. caudal

Question 13

Surgical boundaries of eq. frontal sinus:

Answer 13

1. Caudal: line through zygomatic process of frontal bone
2. Rostral: Half way between orbit and infraorbital foramen
3. median: 2cm from midline
4. lateral: oblique line, from supraorbital foramen to rostral most portionof median limit

Question 14

Surgical boundaries of eq. maxillary sinus:

Answer 14

1. caudal: rostral portion of orbit
2. infraorbital foramen
3. Dorsal: line from infraorbital foramen to facial crest
4. ventral: facial crest

Question 15

T/F. frontal and dorsal conchal sinus communicate with eachother?

Answer 15

T

Question 16

What are the frontal and dorsal conchal sinus referred to as?

Answer 16

conchofrontal sinus

Question 17

Which sinus is found within the frontal and nasal bones?

Answer 17

conchofrontal sinus

Question 18

Is the conchofrontal sinus superficial or deep to nasal cavities?

Answer 18

superficial

Question 19

T/F. Conchofrontal sinus directly communicates with nasal cavity?

Answer 19

F. must pass through maxillary sinus first, then nasal cavity

Question 20

Slit-like communication of maxillary sinus with nasal cavity.

Answer 20

Nasomaxillary opening

Question 21

Where does the nasomaxillary opening open?

Answer 21

middle nasal meatus

Question 22

How does the conchofrontal sinus communicate with the maxillary sinus?

Answer 22

frontomaxillary opening

Question 23

The maxillary sinus contains the roots of which teeth?

Answer 23

PM4, M1-3

Question 24

In bovine, the frontal sinus opens to the nasal passage via ______

Answer 24

ethmodial meatus

Question 25

What are the 3 blind pouches of the bovine frontal sinus?

Answer 25

1. postorbital diverticulum 2. cornual diverticulum 3. nuchal diverticulum

Question 26

which blind pouch of the bovine frontal sinus is caudal and medial to the orbit?

Answer 26

postorbital diverticulum

Question 27

Which blind pouch of the bovine frontal sinus occupies the base of the horn?

Answer 27

cornual diverticulum

Question 28

Which blind pouch of the bovine frontal sinus is the most caudal end of the sinus?

Answer 28

nuchal diverticulum

Question 29

Which blind ended pouch of the bovine frontal sinus is the largest?

Answer 29

postorbital diverticulum

Question 30

Why must you dehorn cows at a young age?

Answer 30

to avoid damage to the cornual diverticulum

Question 31

Surgical boundries of the frontal sinus in bovine:

Answer 31

1. caudal: bse of skull | 2. rostral: border of orbit

Question 32

How does the bovine maxillary sinus communicate with the nasal cavity?

Answer 32

nasomaxillary opening

Question 33

T/F the maxillary and frontal sinus communicate in the bovine

Answer 33

F

Question 34

Surgical boundreis of maxillary sinus in cow:

Answer 34

1. caudal: rostral border of orbit 2. rostral: facial tuberosity 3. dorsal: line from medial orbit to infraorbital foramen 4. ventral: line from zygomatic arch to facial tuberocity

Question 35

Extension of maxillary sinus in cow:

Answer 35

lacrimal bulla

Question 36

connects each middle ear to the nasopharynx and allows air to pass b/t the tympanic cavity and ouside of body

Answer 36

auditory tube

Question 37

dilation of auditory tubes in horse?

Answer 37

guttural pouches

Question 38

How many guttural pouches do equine have?

Answer 38

2 Right and left separated by thin septum

Question 39

what bone incompletely divides each guttural pouch into medial and lateral compartments?

Answer 39

stylohyoid

Question 40

T/F. the medial and lateral compartments of the guttural pouch do not communicate.

Answer 40

F. communicate freely

Question 41

What nn. are located close to the medial guttural pouch?

Answer 41

CN 9-12

Question 42

What a. is located close to the medial guttural pouch?

Answer 42

internal carotid a.

Question 43

What n is located close to the the lateral guttural pouch?

Answer 43

Facial n.

Question 44

What a. is located close to the lat. guttural pouch?

Answer 44

external carotid

Question 45

What is guttural tympany?

Answer 45

when guttural pouch fills with air inability of air to escape through pharyngeal opening of auditory tube

Question 46

What lymph nodes are located just ventral to the guttural pouch?

Answer 46

retropharyngeal