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Organ histology > Unit 7 > Flashcards

Unit 7 Flashcards

1
Q

Where is the masticatory mucosa found

A

Gingiva

Hard palate

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2
Q

What type of epithelium covers the masticatory mucosa

A

Keratinized or parakeratinized stratified squamous epithelium

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3
Q

What is special about the superficial cells of parakeratinized stratified squamous epithelium

A

They keep their nuclei

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4
Q

What are the two parts of the lamina propria of the oral mucosa

A

Papillary layer

Reticular layer

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5
Q

Which layer of the lamina propria has blood vessels nerves and sensory receptors

A

Papillary layer

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6
Q

Which layer of the lamina propria is made of dense connective tissue

A

Reticular layer

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7
Q

What special sense organ is found in the papillary layer of the lamina propria

A

Meissner’s corpuscles

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8
Q

Where is the lining mucosa or the oral mucosa found

A 
Soft palate
Underside of tongue
Floor of mouth
Cheeks
Lips
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9
Q

What type of surface epithelium lines the lining mucosa

A

Nonkeratinized stratified squamous

Occasionally Parakeratinized stratified squamous epithelium

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10
Q

What type of surface epithelium covers the vermillion border

A

Keratinized stratified squamous epithelium

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11
Q

What type of CT makes up the Lamina propria of the

A

Lining mucosa

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12
Q

What type of mucosa is found on Filiform papillae

A

Keratinized stratified squamous

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13
Q

What type of epithelium covers all the papillae (except filiform)

A

Stratified squamous

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14
Q

What is the function of the papillae

A

Move food

Taste

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15
Q

What part of the tongue has a thicker mucosa

A

Dorsal part

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16
Q

What are the different types of papillae

A

Filiform
Fungiform
Foliate
Vallate

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17
Q

What type of papillae is associated with small salivary glands

A

Vallate

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18
Q

What do the small glands associated with Vallate papillae do

A

Produce serous fluid to cleanse taste buds on papillae

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19
Q

What papillae do not have taste buds

A

Filiform

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20
Q

What type of CT make of the lamina propria of the tongue

A

Loose CT

Possibly adipose

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21
Q

What is contained on the submucosa on the tongue

A

Lingual salivary glands

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22
Q

What is the function of the intrinsic muscles of the tongue

A

Change the shape of the tongue

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23
Q

What are the layers of a tooth prior to eruption

A 
Ameloblasts
Enamel
Dentin
Predentin
Odontoblasts
Dental papilla
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24
Q

What layer of the tooth is a layer of polarized Columnar cells

A

Ameloblasts

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25
Q

What is the function of Ameloblasts

A

Produce enamel prior to eruption

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26
Q

What layer of the tooth is the hardest substance in the body

A

Enamel

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27
Q

Can we make more enamel after a tooth erupts

A

No

28
Q

What cells make dentin

A

Odontoblasts

29
Q

What is the precursor to dentin

A

Predentin

30
Q

What layer of the tooth is a layer of columnar cells lining the pulp cavity

A

Odontoblasts

31
Q

What layer of the tooth repairs and produces dentin

A

Odontoblasts

32
Q

Which layer of the tooth contains blood vessels and nerves

A

Dental papilla

33
Q

What salivary gland is the largest

A

Parotid

34
Q

What percent of saliva is produced by the parotid gland

A

30%

35
Q

Which salivary gland is most affected by mumps

A

Parotid gland

36
Q

What percent of the fluid produced by the parotid gland is serous

A

100%

37
Q

What products are produced by the parotid glad

A

Salivary amylase
Lysosyma
IgA

38
Q

What percent of saliva is produced by the Submandibular gland

A

60%

39
Q

What is the general composition of the saliva produced by the submandibular gland

A

20% mucus

80% serous

40
Q

What type of mucus does the submandibular gland produce

A

Red

41
Q

what special serous cell is found in the submandibular gland

A

Serous Demilumes

42
Q

What is the smallest Salivary gland

A

Sublingual gland

43
Q

What percent of salivary output is produced by Sublingual gland

A

5%

44
Q

What percent of the saliva produced by the sublingual gland is mucus

A

80%

20% serous

45
Q

What type of mucus is produced by the sublingual gland

A

White mucus

46
Q

All serous produced from the sublingual gland come from what cell

A

Serous Demilumes

47
Q

What direction does the muscle in the muscularis mucosae run

A

Longitudinal

48
Q

What is the name of the nerve plexus found in the submucosa

A

Meissner plexus (submucosal plexus)

49
Q

What type of plexus is found in the muscularis externa

A

Myenteric (Auerbrach) plexus

50
Q

What is the fiber orientation of the muscularis externa

A

Inner circular

Outer longitudinal

51
Q

What is the function of the esophagus

A

Trasnfer the bolus to stomach from oropharynx

52
Q

what type of epithelium lines the mucosa of the Esophagus

A

Stratified squamous

53
Q

What special cells are found int eh surface epithelium of the mucosa

A

Langerhans cells

54
Q

What glands are found in the lamina propria of the esophagus

A

Esophageal cardiac glands

55
Q

What is the function of the esophageal cardiac glands

A

Produce Neutral mucus to prevent epithelial damage

56
Q

What type of muscle is found in the muscularis middle 1/3 of the esophagus

A

Miscute of smooth and skeletal muscle

57
Q

Esophageal properglands are found in which layer of the esophagus

A

Submucosa

58
Q

What are the two regions of the lamina propria that contain Esophageal cardiac glands

A 
Near pharynx (sometimes)
Near stomach (always)
59
Q

What part of the esophagus has a thin musculars mucosae

A

Distally (by pharynx)

60
Q

What part of the esophagus has a thick muscularis mucosae

A

Proximally (by stomach)

61
Q

What is the function of the Esophageal proper glands

A

Produce slightly acidic mucus to lubricate food

62
Q

Parasympathetic innervation to the digestive system come from which nerve

A

Vagus

63
Q

What does parasympathetic stimulation to the digestive system do

A

Stimulate peristalsis
inhibit sphincters
Activate secretions

64
Q

What nerve provides sympathetic innervation to the digestive system

A

Splanchnic nerves

65
Q

What does sympathetic stimulation of the digestive system do

A

Inhibit peristalsis
Contraction of sphincters
Restrict blood flow to gut

Organ histology (8 decks)

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