Gastrointestinal Flashcards

1
Q

Digestive tract vs accessory

A

Digestive tract is anything that contains the food (tubes)

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2
Q

Intestinal layers

A

Mucosa
Mucosal epithelium
Lamina propria
Submucosa
Submucosal plexus
Muscular layer
Myenteric plexus
Serosa

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3
Q

intestine epithelium

A

stomach, and intestines have simple columnar cells

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4
Q

Plicae circulares

A

circular folds from the mucosa layer

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5
Q

lamina propria

A

part of the mucosa, contains BV, nerves, SM and lymphatic vessels

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6
Q

Muscular mucosae

A

SM within the mucosa

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7
Q

Submucosa

A

Larger blood vessel and lymphatics
Submucosal neural plexus

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8
Q

Serosa layer

A

Only within the peritoneal cavity (not in the pharynx, esophagus or rectum they have adventitia)

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9
Q

Oral vestibule

A

Are between lips/cheeks and teeth

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10
Q

Parotid gland

A

back of mouth 25% watery

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11
Q

Sublingual

A

undergoing 5% mucus
has many ducts to under the tongue

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12
Q

Submandibular

A

70% both

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13
Q

Esophageal hiatus

A

hole to pass through diaphragm

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14
Q

Esophagus wall

A

Mucosa (nonkeratnized squamous)
Submucosa (large folds for expansion) has simple branched mucus glands
muscular mucosae, very thin near pharynx then thickens
Surrounded by fibres adevntitia

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15
Q

Stomach structure

A

Fundus (top)
Cardia (entrance)
Body
pyloric
lesser curvature (liver to stomach)
greater curvature (stomach to fat pouch curtain
Omenta (tissue connecting curvature to other parts

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16
Q

Stomach innervation

A

Vagus nerve (para) tiggered by sight or smell
Celiac plexus (sympathetic)

17
Q

Mucous surface cells

A

All around to protect stomach lining

18
Q

mucous neck cells

A

Around ducts of gastric pits, mucus to lubricate food

19
Q

Parietal cells

A

Intrinsic factor for B12
Hydrochloric acid

20
Q

Chief cells

A

Pepsinogen->pepsin
babies also rennin and gastric lipase (milk digestion)

21
Q

enteroendocrine cells (EEC)(G cells)

A

Gastrin to stimulate other glands

22
Q

Gastric pits

A

contain glands in cells are branched columnar glands

23
Q

intestine parts

A

Duodenum
jejunum
ilium

24
Q

Paneth cells

A

located in intestinal crypts and help innate immunity

25
Q

Lacteals

A

Within each villus part of lymphatic to absorb larger bits.

26
Q

Duodenal submucosal glands

A

large amounts of mucus to acts as chyme buffer and lower pH

27
Q

aggregated lymphoid nodules

A

within the ileum the peyers patches

28
Q

Large intestine sections

A

Cecum, colon, rectum

29
Q

Colon sections

A

ascending, transverse, descending, sigmoid

30
Q

large intestine function

A

Reabsorption of water and vitamins

31
Q

Appendix tissue

A

is lymphatic tissue