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VMS 1004 > The tongue > Flashcards

The tongue Flashcards

1
Q

Oral cavity Proper

A

The space between the teeth and tongue

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2
Q

Vestibule

A

Gap between teeth and cheek

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3
Q

What do lips bind to?

A

the oral fissure

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4
Q

What are lips innervated by?

A

sensory fibres, hence they are very tactile organs

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5
Q

Lips in dogs, horse and sheep

A

soft and flexible

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6
Q

Lips in cows and pigs

A

stiff and less mobile

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7
Q

What is the outer layer of the lips?

A

stratified squamous epithelium

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8
Q

What is the middle layer of the lips?

A

Skeletal muscle

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9
Q

What is the inner layer of the lips?

A

Labial gland

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10
Q

Where is the hard palate?

A

the rostral part of the root mouth

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11
Q

Where is the soft palate?

A

The caudal part of the root mouth

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12
Q

What are muscles covered by?

A

musculomucousal membrane

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13
Q

Functions of the Hard Palate?

A

It is keratinised for protection and has ridges to help grip food

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14
Q

Palatine bone

A

Aids in the senses of smell and taste

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15
Q

Vomeronasal organ

A

organ behind the nose

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16
Q

Incisive papilla

A

Lump at the top of the mouth, opens into the incisive duct and covered in keratinised epithelium and strengthened by cartilage

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17
Q

What are the 3 layers of the hard palate

A

Mixed gland, Palatine bone and stratified squamous epithelium

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18
Q

Tongue

A

Core muscle covered by stratified squamous epithelium

19
Q

where is the Lyssa

A

Line down the centre of the tongue, it is surrounded by dense connective tissue

20
Q

Intrinsic Muscles in Tongue

A

muscle fibres orientated in 3 directions longitudinal, transverse and vertical- forms the proper position of the tongue

21
Q

Extrinsic tongue muscles

A

Attaches the tongue to other structures

22
Q

Intrinsic

A

Muscles lie entirely within the tongue

23
Q

3 extrinsic muscles

A

Stylo-glossus, Hyo-glossus and Genio-glossus

24
Q

how are Intrinsic muscles orientated

A

have muscle fibres orientated in 3 directions that allow it to sit in its normal (proper) position

25
Q

Stylo-glossus

A

long, thin muscle that retracts and elevates the tongue

26
Q

Hyo-glossus

A

Wide and flat muscle- retracts and depresses the tongue

27
Q

Genio-glossus

A

Fan shaped muscle, caudal and rostral fibres protrude and retract the apex

28
Q

what are Lingual papillae

A

small structures on the upper surface of the tongue

29
Q

What are the two types of lingual papillae?

A

Mechanical and Gustatory

30
Q

4 types of mechanical papillae

A

Filiform, Conical, Marginal and Lenticular

31
Q

name 3 types of Gustatory papillae

A

Fungiform, Vallate and Foliate

32
Q

Filiform

A

Hair-like structures and grips food

33
Q

Conical

A

Larger and less frequent, provides traction for food

34
Q

Marginal

A

Newborn carnivores and piglets, aids in suckling

35
Q

Lenticular

A

hard and horny due to keratinisation

36
Q

Fungiform

A

Mushroom shaped

37
Q

Filiform

A

hair like structures on the dorsal surface of the tongue

38
Q

vallate

A

between the body and root of the tongue, has large circular projections surrounded by a deep groove

39
Q

Foliate

A

at the same level but on the edges of the tongue, found in horses and pigs

40
Q

How is the motor part of the tongue innervated?

A

Hypoglossal nerve

41
Q

How is the Sensation part of the Rostral part of the sensory tongue innervated

A

lingual nerve, branch of mandibular division

42
Q

How is the Caudal part of the sensory tongue innervated

A

Taste and general sensation, Glossopharyngeal nerve and has additional innervation from the vagal nerve

43
Q

What is the vomeronasal organ responsible for?

A

Semiochemical pheromone detection

44
Q

How is the Taste part of the Rostral part of the sensory tongue innervated

A

The facial nerve

VMS 1004 (30 decks)

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