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Microbiology > Digestive System > Flashcards

Digestive System Flashcards

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Biology 101 flashcards
1
Q

List the three possible layers of the tunica mucosa.

A

3 layers of tunica mucosa

  • inner epithelium
  • middle lamina propria
  • thin outer muscularis mucosae
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2
Q

List two plexuses found in some tubular viscera.

A

Cranial and caudal myenteric plexus

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3
Q

List the components of the digestive system.

A
  • oral cavity
  • teeth
  • esophagus
  • stomach
  • small intestine
  • large
  • colon
  • rectum
  • anus
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4
Q

List the salivary glands and their secretions.

A

major salivary glands

  • parotid gland- serous
  • sublingual gland- mixed
  • submandibular gland- mixed
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5
Q

Function of Gastrointestinal system (5)

A

Function of Gastrointestinal system

Prehension: ingestion followed by fragmentation

Mechanical and enzymatic breakdown of nutrients

Absorption

Synthesis/Secretion

Excretion of waste material

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6
Q

Identify

A
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7
Q
A

These projections are called the VILLI

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8
Q

Oral Cavity

A

Oral Cavity

  • Formed by lips and cheeks and palate, pharynx, tongue
  • mucosa lined by stratefied squamous epithelium
  • lamina propria of connective tissue
  • **dental pad in ruminants
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9
Q
A
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10
Q

Tongue

A

Tongue

  • covered by mucosa
  • papillae ore the bumbs
  • sone papillae have taste buds
  • skeletal muscle!
    • longitudinal
    • transversal
    • vertical
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11
Q
A
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12
Q

Teeth

A

Teeth

  • Hard structures
    • enamel produced by ameloblasts
    • dentin beneath is produced by odontoblasts
    • cementum
  • Soft tissues
    • pulp
    • peridontal ligament
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13
Q

layers of tooth

A
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14
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A
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15
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16
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17
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18
Q

4 tunics of digestive organs

A

4 tunics of digestive organs

  • Mucosa
    • inner epithelium
    • middle lamina propria
    • thin outer muscularis mucosae
  • Submucosa
  • Muscularis
    • inner circular
    • outer longitudinal
  • Serosa
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19
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20
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21
Q
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22
Q

myenteric plexus

A

myenteric plexus

  • part of tunica muscularis
  • nervous tissue
  • neuron cell bodies that control glands and smooth muscle
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23
Q

esophagus

A

esophagus

  • lined by stratefied squamous epithelium
  • mucus glands
  • heals poorly
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24
Q

Identify

A
25
Q
A
26
Q

Stomach

A
27
Q

Complex stomach of ruminants

A
28
Q

Identify

A
29
Q

Identify

A
30
Q

Identify

A
31
Q

Glandular stomach

A

Glandular stomach

  • abomasum is only true stomach in ruminants
  • three glandualar regions in all species
    • cardiac
    • fundic
    • pyloric
32
Q

Identify

A
33
Q

Three types of gastric glands

A
34
Q

Identify

A
35
Q

Cells of fundic region

A
36
Q

Identify

A
37
Q

Flow chart intestine

A
38
Q

Small intestine

A

Small intestine

  • goblet cells
  • plicar, villi, microvilli
  • submucosal glands in duodenum
  • lymphatic nodules in distal small intestine
  • myenterix plexus and submucosal plexus
39
Q

Identify

A

Parvo virus- effects the crypts of lieberkuhn. causes colapse of surface epithelium.

40
Q

Identify

A
41
Q
A

YOU know its small intestine because it has submucosa

42
Q

Identify

A
43
Q

Identify pink cell

A
44
Q

IDentify brown cell

A
45
Q

Large intestine

A

Large intestine

  • NO VILLI
  • intestinal crypts
  • pigs and horses have flat bands called taenia coli
  • innervated via vagus nerve
46
Q

How to distinguis different parts of the intestine?

A
47
Q

Rectum and anus

A
48
Q

Identify

A
49
Q
A
50
Q

Identify

A
51
Q

Saliva

A

Saliva

  • contains water salts enzymes
  • digestive function but also lubrication and immunity
  • MAJOR glands
    • parotid
    • sublingual
    • submandibular
  • MINOR glands
    • lingual
    • palatal
    • labial
    • buccal
    • zygomatic
    • molar
  • Secretions- serous, mucous, mixed
52
Q

large salivary glands

(key features flow chart)

A
53
Q

Identify

A

mixed(pink) and mucous(white) salivary glands

54
Q

Liver

A

Liver

  • capsul of Glisson= mesothelium layer covring each lobe
  • organized into lobules
  • hepatocytes are parenchymal cells arranged in plates with adjacet sinusoids
  • plates are organized into hepatic lobules
55
Q

blood circulation of liver

A
56
Q
A
57
Q
A
58
Q

Hepatic acinus

A

hepatic acinus refers to VASCULAR FLOW PATTERN.

  • begins at triad flows towarts central veins
  • hepatocytes nearest central vein recieve blood lowest in o2= first to be damaged if issue occurs

zone 1= high o2 and nutrients

zone 2= moderate o2 and nutirents

zone 3= low o2 and nutrients

59
Q

pancreas

A

pancreas

  • endocrine (5%)
    • islets of langerhans
  • exocrine (95%)

Microbiology (32 decks)

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