Digestive System Flashcards
(59 cards)
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
2
Q
List two plexuses found in some tubular viscera.
A
Cranial and caudal myenteric plexus
3
Q
List the components of the digestive system.
A
- oral cavity
- teeth
- esophagus
- stomach
- small intestine
- large
- colon
- rectum
- anus
4
Q
List the salivary glands and their secretions.
A
major salivary glands
- parotid gland- serous
- sublingual gland- mixed
- submandibular gland- mixed
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
6
Q
Identify
A
7
Q
A
These projections are called the VILLI
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
9
Q
A
10
Q
Tongue
A
Tongue
- covered by mucosa
- papillae ore the bumbs
- sone papillae have taste buds
- skeletal muscle!
- longitudinal
- transversal
- vertical
11
Q
A
12
Q
Teeth
A
Teeth
- Hard structures
- enamel produced by ameloblasts
- dentin beneath is produced by odontoblasts
- cementum
- Soft tissues
- pulp
- peridontal ligament
13
Q
layers of tooth
A
14
Q
A
15
Q
A
16
Q
A
17
Q
A
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
19
Q
A
20
Q
A
21
Q
A
22
Q
myenteric plexus
A
myenteric plexus
- part of tunica muscularis
- nervous tissue
- neuron cell bodies that control glands and smooth muscle
23
Q
esophagus
A
esophagus
- lined by stratefied squamous epithelium
- mucus glands
- heals poorly
24
Q
Identify
A
25
26
Stomach
27
Complex stomach of ruminants
28
Identify
29
Identify
30
Identify
31
Glandular stomach
Glandular stomach
* abomasum is only true stomach in ruminants
* three glandualar regions in all species
* cardiac
* fundic
* pyloric
32
Identify
33
Three types of gastric glands
34
Identify
35
Cells of fundic region
36
Identify
37
Flow chart intestine
38
Small intestine
Small intestine
* goblet cells
* plicar, villi, microvilli
* submucosal glands in duodenum
* lymphatic nodules in distal small intestine
* myenterix plexus and submucosal plexus
39
Identify
Parvo virus- effects the crypts of lieberkuhn. causes colapse of surface epithelium.
40
Identify
41
YOU know its small intestine because it has submucosa
42
Identify
43
Identify pink cell
44
IDentify brown cell
45
Large intestine
Large intestine
* NO VILLI
* intestinal crypts
* pigs and horses have flat bands called taenia coli
* innervated via vagus nerve
46
How to distinguis different parts of the intestine?
47
Rectum and anus
48
Identify
49
50
Identify
51
Saliva
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
large salivary glands
| (key features flow chart)
53
Identify
mixed(pink) and mucous(white) salivary glands
54
Liver
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
blood circulation of liver
56
57
58
Hepatic acinus
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
pancreas
pancreas
* endocrine (5%)
* islets of langerhans
* exocrine (95%)
