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CAPS 391 > Chapt 26. Digestive system > Flashcards

Chapt 26. Digestive system Flashcards

1
Q

What is the digestive system

A

the muscular tube that starts at the oral cavity and ends at the anus

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2
Q

What are the main segments of the ailementary canal

A

oral cavity. pharynx, eosphagus, stomach and small and large intestine

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3
Q

What are the accessory digestive organ

A

teeth, salivary glands, pancreas, gall bladder and liver

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4
Q

What are the boundaries of the oral cavity

A

anterior boundary: lips

posterior: orophayngeal isthmus
superiorly: palate
inferiorly: tongue
laterally: cheeks

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5
Q

What are the lips

A

2 muscular fold -skeletal muscle fibers ( orbicularis oris).

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6
Q

What is the transitional zone of the lips called

A

vermillion

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7
Q

What are the components of the palate

A

has a hard and soft palate

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8
Q

Describe the hard palate

A

anterior part of the roof of the oral cavity
floor of nasal cavity
made from maxillary and palatine bone
covered by mucus membrane

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9
Q

Describe the soft palate

A

posterior part of the roof of the oral cavity
separates oral cavity from the nasopharynx superiorly
has a soft tissue projection: uvula

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10
Q

What nerves supply the soft palate

A

CN 10

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11
Q

what forms the floor of the oral cavity

A

suprahyoid muscles

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12
Q

What is the function of the suprahyoid muscles

A
  1. elevate hyoid
  2. depress mandible
  3. swallowing
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13
Q

the dental arches divides the oral cavity into 2 compartments- what are they

A
  1. vestibule: horse-shoe shape space: part of oral cavity sitting outside dental arches
  2. oral cavity proper: part of the oral cavity sitting inside the dental arches
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14
Q

What is the mucosal fold that binds the lips to the bone

A

frenulum

-superior/inferior labial frenulum

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15
Q

What is the mucosal fold that attaches the tongue to the bone

A

lingual frenulum

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16
Q

Describe the palatoglossal arch

A

muscular folds between palate and tongue ( soft palate and tongue)

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17
Q

Describe the palatopharyngeal arch

A

muscular folds extends from the palate to the pharynx

18
Q

Where are the palatine onsils located

A

between the palatoglossal and palatopharyngeal arch

19
Q

What is the oropharyngeal isthmus

A

It is a space: posterior part of the oral cavity

20
Q

What is the boundary between the oral cavity and oropharynx

A

oropharyngeal isthmus

21
Q

Where are the palatine tonsils located

A

oropharynx NOT the oral cavity

22
Q

What are the components of the teeth

A

crown

neck- contained within alveolar bone- only part of the tooth that comes into touch with the gum

23
Q

Describe the crown of the teeth

A

covered by enamel

has an underlayer of dentin

24
Q

Describe the dentin of the teethe

A

forms the core of the tooth

25
Q

What is in the pulp cavity

A

tooth nerves, blood vessels

-within dentin

26
Q

What is the root canal

A

extension of the pulp cavity into the roots

27
Q

What is the cementum

A

only found in the root

28
Q

What is the periodontal ligament

A

where the root is attached to

29
Q

What innervates the teeth

A

CN 5

30
Q

What supplies muscles of the tongue

A

CN 12

31
Q

How many muscles are there in the tongue

A

19

32
Q

What divides the root and the body of the tongue

A

terminal sulcus

33
Q

What is present at the root(posterior) side of the tongue

A

lingual tonsils

34
Q

What innervates the posterior 1/3 of the tongue

A

CN 9

  • gives general sensory innervation
  • special senses: taste
35
Q

What are alternative names of the posterior end of the tongue

A

root of tongue
pharyngeal part of tongue
posterior 1/3 of tongue

36
Q

What are the 4 groups of the papillae

A
  1. circumvallate papilla
  2. fungiform papillae
  3. folliate papillae
  4. filiform papillae
37
Q

What innervates the anterior 2/3 of the tongue

A

CN7 :sense of taste

CN 5:it picks up the general sensory information

38
Q

What is the starting point of the pharynx

A

C6

39
Q

What level does the esophagus passes through the diaphragm

A

T10

40
Q

Where is the entrance of the stomach located

A

T11

41
Q

What are structures anterior to the esophagus

A
  1. arch of aorta

2. trachea ( at level of T4-T5)

CAPS 391 (33 decks)

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