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Anatomy 1. The Digestive System. > The Teeth. > Flashcards

The Teeth. Flashcards

1
Q

The incisor teeth are attached to what bone of the skull?

A

The incisive bone.

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2
Q

What is the function of the incisors?

A

To cut the food.

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3
Q

What are the molars and pre-molars responsible for?

A

For grinding down food.

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4
Q

What is the difference between a diphyodont V polyphodont?

A

Diphyodonts recieve 2 sets of teeth throughout their lifetime.

Polyphodonts receive multiple sets of teeth throughout their lifetime.

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5
Q

What is the difference between a brachydont V hipsodont?

A

Brachydont teeth stop growing at a certain point.

Hipsodont the tooth will keep growing throughout the animals lifetime.

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6
Q

How does the structure of a brachydont tooth differ to that of a hipsodont tooth?

A

In branchydonts the crown of the tooth is almost the same size as the root.

In hipsodonts the crown is much larger than the root.

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7
Q

What is the difference isognathic teeth and anisognathic teeth?

A

Isognathic teeth are teeth on the upper and lower jaws that will align with each other.

Anisognathic teeth are where teeth on the upper and lower jaw do not match and only one side can make contact at any one time.

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8
Q

What are heterodonts?

A

Animals that have different types of teeth e.g. incisors and molars in the oral cavity are referred to as heterodonts.

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9
Q

What is a homodont?

A

A homodont has the same type of teeth present all over the abdominal cavity.

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10
Q

What is the dental formula?

A

A way of representing the number and classification of teeth in certain animals.

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11
Q

What are the first set of teeth that appear in the mouth of the cat and dog?

A

Deciduous teeth (milk teeth).

The 2nd set are the permanent teeth.

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12
Q

In the dental formula for deciduous teeth, what initials are given to the incisors, the canines, the premolars and the molars?

A

Di = incisor teeth.

Dc = canine teeth.

Dp = premolar teeth.

Dm = molar teeth.

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13
Q

In the dental formula for permanent teeth, what initials are given to the incisors, the canines, the premolars and the molars?

A

I = incisor teeth.

C = canine teeth.

P = premolar teeth.

M = molar teeth.

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14
Q

How would the dental formula represent an animal that has 3 canines in the upper jaw and 4 in the lower jaw?

A

C 3/4.

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15
Q

How do we use the dental formula to find all of the teeth in the mouth?

A

All the categories of teeth are calculated and then added together and multiplied by 2. E.g.

(I 2/3, C 3/3, P 4/4 M6/6) = 31 * 2 = 62 teeth in total.

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16
Q

What is the dental formula for deciduous in the dog?

A

(Di 3/3, Dc = 1/1, Dp 3/3) * 2 = 28.

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17
Q

What is the dental formula for permanent teeth in the dog?

A

(I 3/3, C 1/1, P 4/4, M 3/2) * 2 = 42.

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18
Q

When will molar teeth erupt in the dog and cat?

A

Molar teeth will only erupt when the permanent teeth come in.

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19
Q

What is the dental formula for deciduous in the cat?

A

(Di 3/3, Dc = 1/1, Dp 3/2) * 2 = 26.

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20
Q

What is the dental formula for permanent teeth in the dog?

A

(I 3/3, C 1/1, P 3/2, M 1/1) * 2 = 30.

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21
Q

How long does it take for teeth to appear in the cat?

A

Around 2 weeks.

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22
Q

What are the 4 quadrants of the mouth for permanent teeth?

A

Top right corner = 1.

Top left corner = 2.

Bottom left corner = 3.

Bottom right corner = 4.

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23
Q

What are the 4 quadrants of the mouth for deciduous teeth?

A

Top right corner = 5.

Top left corner = 6.

Bottom left corner = 7.

Bottom right corner = 8.

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24
Q

What are the numbers for the incisors in the dog?

A

101-103.

201-203.

301-303.

401-403.

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25
Q

How many incisors are present in the dog?

A

12.

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26
Q

What are the numbers for the canines in the dog?

A

104.

204.

304.

404.

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27
Q

How many canines are present in the dog?

A

4.

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28
Q

What are the numbers for the pre-molars in the dog?

A

105-108.

205-208.

305-308.

405-408.

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29
Q

How many pre-molars are found in the dog?

A

16.

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30
Q

What are the numbers for the incisors in the cat?

A

101-103.

201-203.

301-303.

401-403.

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31
Q

How many incisors are present in the cat?

A

12.

32
Q

What are the numbers for the canines in the cat?

A

104.

204.

304.

404.

33
Q

How many canines are present in the cat?

A

4.

34
Q

What are the numbers for the pre-molars in the cat?

A

106-108.

206-208.

306-308.

406-408.

35
Q

What are the numbers for the molars in the dog?

A

109-110.

209-210.

309-311.

409-411.

36
Q

How many molars are present in the dog?

A

8.

37
Q

What are the numbers for the molars in the cat?

A

109.

209.

309.

409.

38
Q

How many pre-molars are present in the cat?

A

12.

39
Q

How many molars are present in the cat?

A

4.

40
Q

What are the numbers of the teeth that are present in the dog, but not in the cat?

A

105.

205.

305.

405.

411.

41
Q

What teeth should be present when a dog is around 3-5 weeks old?

A

All of the incisors and canines.

42
Q

What teeth should be present when a dog is around 6 weeks old?

A

The pre-molars and molars should be present.

43
Q

At what age should a dog have all its deciduous teeth?

A

At 6 weeks.

44
Q

What teeth should be present when a cat is around 3-4 weeks old?

A

A full set of incisors and canines.

45
Q

What teeth should be present when a cat is around 5-6 weeks old?

A

A full set of molars and pre-molars.

46
Q

When will dogs get their permanent canines and incisors?

A

By 5-7 months.

47
Q

When will dogs get their permanent molars and pre-molars?

A

By the time they reach 7 months.

48
Q

When will cats get their permanent canines and incisors?

A

At 5 1/2 to 6 1/2 months.

49
Q

When will cats get their permanent molars and pre-molars?

A

Between 5 and 6 months.

50
Q

Where do the teeth fit into the jaw?

A

The teeth are rooted into the bones of the upper or lower jaw and they are fixed into a specific area known as the socket.

51
Q

What name is given to the visible part of a tooth?

A

The crown.

52
Q

What is the root of the tooth?

A

The part that is embedded into the mouth and is not visible.

53
Q

What is the labial surface of the tooth?

A

The surface of the crown that makes contact with the lips.

54
Q

What name is given to the surface of the tooth that faces the oral cavity?

A

The lingual surface as it makes contact with the tongue.

55
Q

What is the neck of the tooth?

A

The part of the tooth that makes contact with the mucosa of the oral cavity at the gum/gingiva.

56
Q

What layers make up the tooth?

A

The outermost part is made of enamel.

This surrounds an inner layer of dentine.

There is a layer of pulp which resides in the pulp cavity and is surrounded by dentine.

57
Q

What area of the tooth contains the nerves and blood supply for the tooth?

A

The dental pulp.

58
Q

How do the nerves and blood vessels enter the tooth?

A

They pass through a structure known as the apical foramen.

59
Q

What is the oclusive surface of a tooth?

A

The uppermost surface and this makes contact with the tooth either above or below it.

60
Q

How many roots do the incisors, canines and the 1st pre-molar teeth have?

A

They have single roots.

61
Q

How many roots do the 2nd and 3rd pre-molar teeth have?

A

They have 2 roots.

62
Q

How many roots do any teeth more caudal than the 3rd pre-molar have?

A

3 roots.

63
Q

What is the root of the tooth connected to?

A

It is connected the socket via the periodontal membrane.

64
Q

What type of joint is used to connect the teeth to the jaw?

A

A gomphosis joint.

65
Q

What 3 things are found in the peridonteum of the tooth?

A

The cementum.

The alveolar bone (socket).

The periodontal ligament.

66
Q

What is the main purpose of the periodontal membrane

A

To hold the tooth in the socket.

67
Q

What are the largest teeth in the mouth?

A

The 4th pre-molar of the upper jaw.

The 1st premolar of the lower jaw.

They are known as carnival or sectorial teeth.

68
Q

The root of what tooth is in close association with the maxillary/nasal recess?

A

The root of upper pre-molar 4.

69
Q

What bones are the teeth in the upper and lower jaw embedded into?

A

The maxillary and incisive bone respectively.

70
Q

What nerve innervates the upper teeth?

A

The maxillary branch of the tri-geminal nerve.

71
Q

What foramen will the maxillary branch of the tri-geminal nerve run through?

A

Through the infra-orbital canal to then enter the teeth.

72
Q

What nerve supplies the teeth of the lower jaw?

A

The inferior alveolar nerve which is a branch of the mandibular nerve.

73
Q

What nerve supplies the mandibular nerve?

A

The tri-geminal nerve.

This means that the teeth in both jaws are supplied by the tri-geminal nerve.

74
Q

What artery supplies the teeth in the upper jaw?

A

The maxillary artery.

75
Q

What artery supplies the teeth in the lower jaw?

A

The mandibuloalveolar artery.

76
Q

The maxillary artery runs through what foramen?

A

The infra-orbital foramen.

Anatomy 1. The Digestive System. (16 decks)

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