Canine Head P1

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Questions and Answers

What structure supports the nasal septum?

Vomer bone

What are the 8 major foramina’s of the skull?

The infraorbital foramen, optic canal, orbital fissure, rostral alar foramen , external acoustic meatus, stylomastoid foramen, tympano-occipital fissure and hypoglossal canal

Match the following nerves to the foramina it courses through

Hypoglossal Canal = CN XII (hypoglossal nerve) Stylomastoid foramen = CN VII (facial nerve) Rostral alar foramen = CN V (trigeminal nerve) Optic canal = CN II (optic)

Match the nerve(s) that course through the major foramina

Infraorbital foramen = Maxillary n. Branch Orbital fissure = CN II, IV, V, VI External acoustic meatus = Nothing Tympano-occipital fissure = CN IX, X, XI Signup and view all the answers

Match to the correct cranial:facial ratios

Brachycephalic = Short face/mandible Dolichocephalic = Long face, short mandible Mesocephalic = Normal face Free bee = Free bee Signup and view all the answers

The boundaries of the nasal cavity is from the _ to _

The boundaries of the nasal cavity is from the nostrils to choanae. Signup and view all the answers

Which of the following is false about the nasal conchae?

With their mucosa, warm and cleanse inspired air Signup and view all the answers

Which part of the frontal sinus is NOT found on the lateral side of the dog?

Caudal part Signup and view all the answers

What role do the paranasal sinuses play in the dog's craniofacial anatomy?

Facilitate tooth development and muscle attachment Signup and view all the answers

Which feature characterizes the epithelium lining the paranasal sinuses?

Respiratory epithelium with goblet cells Signup and view all the answers

What is the primary function of the communication between the frontal sinus and the nasal cavity?

To allow drainage of phlegm and purulent material Signup and view all the answers

Which statement correctly describes the developmental origin of the paranasal sinuses in dogs?

They arise from the outgrowth of nasal mucosa. Signup and view all the answers

What are the 5 functions of the tongue? (HINT: TTGPD)

Taste, thermoregulation (panting), grooming, prehension, deglutition Signup and view all the answers

The tongue’s base is the rostral 2/3 found in the oropharynx and its body and apex is the caudal 1/3 of the oral cavity

False Signup and view all the answers

The tongue has two attachments, ventrally to the oral floor and a caudal attachment. What exactly are these attachments?

The ventral attachment is via the lingual frenulum and the caudal attachment is via the basihyoid bone Signup and view all the answers

All tongue papillae have tastebuds

False Signup and view all the answers

Select the papillae that have tastebuds (more than one may apply)

Fungiform Papillae Signup and view all the answers

All 3 extrinsic muscles of the tongue insert on the tongue

True Signup and view all the answers

All extrinsic muscles of the tongue end in _______ (name)

All extrinsic muscles of the tongue in in glossus Signup and view all the answers

What are the three extrinsic muscles of the tongue?

Hyoglossus, Genioglossus and Styloglossus Signup and view all the answers

Match the extrinsic muscle of the tongue to its origin

Styloglossus = Stylohyoid bone Hyoglossus = Thyrohyoid and basihyoid bone Genioglossus = Intermandibular articulation (aka chin) Free bee = Free Bree Signup and view all the answers

What is the intrinsic muscle of the tongue?

Lingualis proprius Signup and view all the answers

Which nerve provides motor innervation to the tongue (to both intrinsic and extrinsic muscles)

Hypoglossal nerve Signup and view all the answers

What are the four major salivary glands of the dog?

Parotid, Sublingual, Zygomatic and Mandibular Signup and view all the answers

What are the functions of saliva?

Lubrication of food, grooming, thermo-regulation, and clean teeth Signup and view all the answers

What two glands open on the sublingual caruncle? (More than one may apply)

Sublingual gland Signup and view all the answers

Study Notes

Paranasal Sinuses in Dogs

The frontal sinus in dogs consists of three distinct parts: lateral, medial, and rostral.
Each part of the frontal sinus has a separate connection to the nasal cavity.
These sinuses develop as an extension of the nasal mucosal lining, penetrating between the outer and inner layers of the skull bone, creating a hollow space.
Connection to the nasal cavity remains after development, serving as a drainage path for mucus and pus.
The inner lining of the sinuses is respiratory epithelium containing goblet cells, which produce mucus.
Their purpose is to increase the area for muscle attachment and tooth development without increasing the weight of the skull bone.

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Description

Basics of Canine head