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Anatomy 1. The Digestive System. > The Mouth and Oral Cavity. > Flashcards

The Mouth and Oral Cavity. Flashcards

1
Q

Where will food be bought into the digestive tract?

A

At the mouth.

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2
Q

What happens to food after it enters the digestive tract?

A

The teeth will break it down into smaller pieces and these pieces will then be swallowed.

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3
Q

What are the 3 functions of the mouth?

A

Prehension.

Insalivation.

Mastication.

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4
Q

What are the accessory organs that are associated with the mouth?

A

The teeth and the tongue.

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5
Q

What is the largest organ within the oral cavity?

A

The tongue.

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6
Q

What is insalivation?

A

The process of adding saliva to the food.

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7
Q

Why do we add saliva to food?

A

As it lubricates the food and aids with swallowing.

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8
Q

What glands will release saliva into the oral cavity?

A

The mandibular gland.

The sublingual gland.

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9
Q

What are the major salivary glands in the oral cavity?

A

The mandibular gland.

The sublingual gland.

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10
Q

What is the rima oris?

A

The opening of the mouth, the most rostral part of the oral cavity.

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11
Q

What makes up the caudal most border of the mouth?

A

The palatoglossal arches (fauces).

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12
Q

What lines the rima oris?

A

The upper and lower lips.

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13
Q

What are the upper and lower lips made from?

A

Muscles and mucus membranes.

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14
Q

What is the function of the lips?

A

To aid with the closure of the mouth and prevent food from falling out of the mouth.

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15
Q

What is the oral vestibule?

A

The area between the lips and the teeth.

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16
Q

What is the oral cavity?

A

The area of the mouth that lies inside the teeth.

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17
Q

What secretes saliva into the oral vestibule?

A

The parotid gland.

The zygomatic gland.

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18
Q

What oral glands are only found in carnivores?

A

The zygomatic glands.

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19
Q

What makes up the external side of the rima oris?

A

The lips.

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20
Q

What is the most lateral and rostral boundaries of the oral cavity?

A

The lips.

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21
Q

What are the 3 layers that form the lips?

A

The skin.

Muscles, tendons, glands and connective tissue.

Mucosa.

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22
Q

What name is given to the glands that are found in the lips?

A

Labial glands.

23
Q

Are the labial glands considered to be major or minor salivary glands?

A

Minor salivary glands.

24
Q

Will the lips be more mobile in dogs or cats?

A

In dogs.

25
Q

What shape are the muscles that are associated with the lips and what is their name?

A

They are circular and are known as the orbucularis oris muscle.

26
Q

From what point of the mouth will the upper and lower lips originate from?

A

From an area of the mouth known as the oral commissure (angle of the mouth).

27
Q

What forms the caudo-lateral boundary of the oral vestibule?

A

The cheeks.

28
Q

What muscles are found in the cheeks?

A

Buccinator muscles.

29
Q

What gland is found in the cheeks of carnivores?

A

The zygomatic salivary gland.

30
Q

What forms the roof of the oral cavity?

A

The hard palate.

The soft palate.

31
Q

What is the function of the hard and soft palate?

A

It divides the oral cavity from the nasal cavity.

32
Q

Where is the hard palate located relative to the soft palate?

A

The hard palate is located more rostrally.

33
Q

What is the major structural difference between the hard and soft palate?

A

The hard palate contains bone.

34
Q

What are the 3 bones that form the hard palate?

A

The incisive bone (rostral).

The maxillary bone (middle).

The palatine bone (caudal).

35
Q

What is the name of the transverse ridges that are found on the hard palate of the dog and cat?

A

Ruage.

36
Q

What is the function of the rugae?

A

They help keep food within the oral cavity.

37
Q

What is found at the rostral end of the hard palate?

A

A tubercle called the incisive papillae.

38
Q

What does the incisive papillae mark?

A

It marks the opening for the incisive ducts on both sides of the mouth.

39
Q

What organs are the incisive ducts associated with?

A

The vomeronasal organ which is involved in the production of the pheromones.

40
Q

What is the caudal continuation of the hard palate?

A

The soft palate.

41
Q

What are the rostral and caudal ends of the soft palate connected to?

A

Rostrally it is connected to the hard palate.

Caudally it is connected to the pharynx.

42
Q

What forms the connection between the soft plate and pharynx?

A

The palato-pharyngeal arches.

43
Q

Does the soft palate contain any bone?

A

No.

44
Q

What marks the beginning of the oesophagus?

A

The epiglottis.

45
Q

How is the soft palate related to the epiglottis?

A

Usually the soft palate will lie over the epiglottis allowing for continuous respiration.

46
Q

What happens to the soft palate that covers the epiglottis after we swallow food?

A

When we swallow we lift up the soft plate allowing for food to enter the oesophagus.

47
Q

What are the 4 major structures that are associated with the soft palate?

A

The palatoglossal arch.

The palatopharyngeal arch.

The palatine tonsils.

The palatine glands (salivary).

48
Q

What are the 5 muscles that are associated with the soft palate?

A

The palatine muscles.

The tensor vili palatini muscles.

The levator vili palatini muscles.

The palatopahryngeus.

The pterophayngeus.

49
Q

What is the tensor vili palatini muscle associated with?

A

The stretching of the soft palate.

50
Q

What are the levator vili palatini and the palatopharyngeus muscles associated with?

A

They are both associated with lifting up the soft palate.

51
Q

When will cleft palate occur?

A

When the soft palate retains a connection with the nasal cavity and the oral cavity.

52
Q

What are the major blood vessels that flow through the soft plate?

A

The major and minor palatine arteries.

53
Q

What area of the mouth is supplied by the major palatine artery?

A

The hard palate.

54
Q

What area of the mouth is supplied by the minor palatine artery?

A

The soft palate.

Anatomy 1. The Digestive System. (16 decks)

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