Ch 23 Flashcards

1
Q

carbohydrates —> monosaccharides

A
  • glucose
  • fructose
  • galactose
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2
Q

chewing

A

mastication

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3
Q

swallowing

A

deglutition

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4
Q

peristalsis

A

forward propulsion of food “milking a cow”

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5
Q

where does absorption occur

A

small intestine

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6
Q

Enteric Nervous System (ENS)

A

nervous network regulating digestive motility, secretions, & blood flow

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7
Q

parasympathetic ENS

A
  • enhances gland secretion

- enhances motility

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8
Q

sympathetic ENS

A
  • inhibits gland secretions
  • inhibits smooth muscle contraction
  • causes vasoconstriction of blood vessels to the digestive tract
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9
Q

triglycerides

A

fatty acids + glycerol

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10
Q

proteins

A

amino acids

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11
Q

lamina propria

A

very vascular
lymphatic follicles
glands

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12
Q

mesentery

A

double layer of peritoneum

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13
Q

what enzyme does the tongue secrete?

A

lingual lipase(begins break down of triglycerides)

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14
Q

what do the salivary glands secrete?

A

salivary amylase(breaks down starch), lysozyme, IgA

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15
Q

where does most of the absorption of food occur?

A

in the small intestine

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16
Q

deglutition

A

pushes bolus of food into oropharynx

17
Q

dysphagia

A

difficult swallowing

18
Q

acute esophagitis

A

ingestion of irritating substances, viral inflammation, intubation

19
Q

GERD (gastroesophageal reflux disease)

A
  • LES fails to close adequately
  • stomach contents “reflux”
  • HCl from stomach irritates esophageal lining = heartburn (radiating substernal pain)
20
Q

Risk factors for GERD

A
  • hiatal hernia
  • recurrent vomiting
  • lying down right after a meal
  • delayed gastric emptying
  • increased abdominal pressure
  • reduced LES muscle tone
21
Q

parietal cells

A

produces intrinsic factor

produces HCl in stomach

22
Q

chief cells

A

produces pepsinogen

23
Q

Peptic Ulcer Disease (PUD)

A
  • erosion from chronic inflammation

- caused by hypersecretion of HCl, hyposecretion of mucus, helicobacter pylori infection

24
Q

What converts pepsinogen to pepsin?

A

HCl

25
Q

What stimulates parietal cells to produce acid?

A
  • ACh
  • Histamine
  • Gastrin
26
Q

What hormones are found in the small intestine?

A
  • secretin
  • CCK
  • GIP
27
Q

What hormones are secreted by the stomach?

A
  • gastrin
  • ghrelin
  • serotonin
  • histamine
28
Q

Whats an exocrine function of the liver?

A

secretes bile into ducts

29
Q

Whats an endocrine function of the liver?

A

secretes TPO, IGFs, hepcidin, angiotensinogen, calcidiol into the blood

30
Q

What are two ways the liver can INCREASE blood glucose?

A

increase glycogenolysis

increase gluconeogenesis

31
Q

How are carbohydrates absorbed into the body?

A

As monosaccharides

32
Q

How are proteins absorbed into the body?

A

As amino acids