Tongue

Question 1

In Jvd foundations 2007 anatomy of tongue in dogs what are 3 extrinsic muscles of the tongue?

Answer 1

Styloglossus
Hypoglossus
Genioglossis

Question 2

In Jvd foundations 2007 anatomy of tongue in dogs, what is the intrinsic muscle called that acts to stiffen tongue and help it change into different shapes?

Answer 2

Lingualis proprius

Question 3

In Jvd foundations 2007 anatomy of tongue in dogs, the extrinsic and intrinsic muscles are innervated by what nerve?

Answer 3

Hypoglossal nerve (CNXII)

Question 4

In Jvd foundations 2007 anatomy of tongue in dogs, touch, heat, pain and taste are innervated by what nerves?

Answer 4

CN VII, IX, and XII (hypoglossal). Special sensory innervation for taste is provided by the glossopharyngeal nerve (CN IX) as well as the chorda tympani, a branch of the facial nerve (VII)

Question 5

In Jvd foundations 2007 anatomy of tongue in dogs, what is the major blood supply?

Answer 5

The lingual artery, a branch of the external carotid artery, is the major blood supply to the tongue. The sublingual artery, while a convenient point to monitor the pulse in an anesthetized patient, is not a major source of blood to the tongue.
The dorsal tongue is rich in arteriovenous anastomoses which help facilitate heat dissipation during panting. The lingual vein drains the tongue.

Question 6

In Jvd foundations 2007 anatomy of tongue in dogs, how is tongue attached?

Answer 6

These attach the root of the tongue to the basihyoid bone
Ventral midline via frenulum
Laterally by palatoglossal arches from caudal body of tongue to cranial aspect of soft palate

Question 7

In Jvd foundations 2007 anatomy of tongue in dogs, what are the 3 main components of the tongue?

Answer 7

root, body, apex

Question 8

In Jvd foundations 2007 anatomy of tongue in dogs, what is the rod shaped connective tissue structure called in the apex of the tongue?

Answer 8

Lyssa. This used to be removed as they thought it would cure rabies.

Question 9

In Jvd foundations 2007 anatomy of tongue in dogs, the dorsal tongue is split in 2 by what structure?

Answer 9

median sulcus

Question 10

In Jvd foundations 2007 anatomy of tongue in dogs, The mucosa on the dorsal surface of the tongue is covered by papillae which are made up of a dermal core covered by cornified stratified squamous epithelium while the mucosa on ventral and lateral sides is smooth.
Gustatory, serous salivary, and mucoserous salivary glands are located amidst the papillae. Taste buds are associated with the gustatory papillae (fungiform, vallate, and foliate)
What are the different types of papillae?

Answer 10

Filiform: Most numerous, small and conical Located on rostral 2/3 of tongue’s dorsal surface Protection of tongue, general sensation, retention of food and water, grooming Less numerous in cats, but more cornified with hook-like tips for grooming

Fungiform: Small, short and broad (“mushroom-like”) May appear darker than surrounding filiform papillae, second most numerous Located rostral 2/3 of tongue Protection of tongue, gustatory

Conical: Large and conical, tips of cones point caudally Distributed over caudal 1/3 of tongue Protection of tongue, general sensation, retention of food and water

Foliate: Present on lateral surface of tongue rostral to palatoglossal fold Gustatory

Vallate: Largest of lingual papillae, number 3-6 with an average of 4 Located where rostral 2/3 of tongue meets the caudal 1/3 Arranged on either side of the median sulcus in a “V” formation with the point of the “V” projecting caudally. General sensation and gustatory

(Marginal: Present in suckling puppies along lateral margins of the apex Function to improve the seal around the nipple when nursing Lost when pup changes from liquid to solid diet)