Digestive system

Question 1

Two main groups of the digestive system

Answer 1

1. Digestive Canal
2. Accessory Digestive

Question 2

Length of tube alive or dead?

Answer 2

Smooth muscle, muscle tone, when alive its 5-7 meters and when dead its 7-9 meters.

Question 3

Digestive Processes

Answer 3

Ingestion, Secretion, motility, digestion, absorption, defecation

Question 4

4 main layers

Answer 4

Mucosa, Submucosa, muscularis and serosa

Question 5

Mucosa?

Answer 5

epithelium changes avascular, lamina propria, muscularis mucosae/ stratified squamous

Question 6

Lamina Propria?

Answer 6

gland nodules of lymphoid tissue immune function

Question 7

Muscularis mucosae

Answer 7

thin layer of smooth muscle along wall of digestive canal, Creates folds within the wall of the mucosa

Question 8

Submucosa?

Answer 8

Ariola connective tissue/ bind mucosa to the muscular layer / highly vascular

Question 9

2 groups of nerves

Answer 9

1. Submucosal neural plexus / network associated with submucosa and the mucosa
2. Myenteric neural plexus / motility and change of wall of the tube as it progresses

Question 10

Muscularis

Answer 10

2 layers - Circular and Longitudinal shrink up / help food move along
- Top 3rd of the esophagus is skeletal and the bottom 3rd smooth muscle

Question 11

Serosa?

Answer 11

Location: esophagus and Rectum is where you wont find any serious membrane.

Question 12

Visceral peritoneum

Answer 12

Organs and the wall of the abdominal wall cavity

Question 13

Mesentric peritoneum?

Answer 13

extension of the perinium that stretches from the coridal perinium. 1 of 6 perinium folds

Question 14

Mesenteric peritoneum

Answer 14

extends from peridia to the visceral perineum to make a pathway that adipose

Question 15

Falciform ligament

Answer 15

Divides left and right lobe of the liver, anchors to the liver above the diaphragm and front of the interior abdominal wall

Question 16

Greater omentum

Answer 16

bigger, Extends from stomach to the transverse colin then back up to the transverse colin, Fatty apron

Question 17

Lesser Omentum

Answer 17

Between stomach and the Mesentery attached posteriorly to the abdominal wall

Question 18

Mesentery

Answer 18

Fold shape, connected posteriorly holds the organs like a suspension, lots of movement in the organs

Question 19

Mesocolon

Answer 19

transverse colon and sigmoid colon posterior abdominal wall

Question 20

Peritoneal cavity

Answer 20

covers top part of the rectum

Question 21

Peritonitis

Answer 21

inflammation of appendix, burst into rectum

Question 22

Retroperitoneal

Answer 22

organs behind the perinium (Pancreas)

Question 23

Serous fluid

Answer 23

No friction with organs together

Question 24

Gingivae

Answer 24

Gums

Question 25

Lingual frenulum

Answer 25

holds the tongue from going to far back

Question 26

uvula

Answer 26

prevents swallowing food in the nasal cavity

Question 27

Fauces

Answer 27

is the opening between the oral cavity and oropharynx

Question 28

Saliva

Answer 28

H2O and solutes mucus, enzymes - 1-1.5 L / day

Question 29

Minor Glands

Answer 29

Labial, buccal, palatal, lingual

Question 30

Masseter

Answer 30

Moves mandible

Question 31

Buccinator

Answer 31

cheek muscle

Question 32

Enamel

Answer 32

protects tooth from wear and tear

Question 33

Dentin

Answer 33

calcified connective tissue majority of the tooth extends down the root

Question 34

Dentinal tubule

Answer 34

Contains dentin to make odontoblast and fluid

Question 35

Pulp cavity

Answer 35

contains connective tissue and blood vessels

Question 36

Root canals

Answer 36

extension of the pulp cavity that contains nerves and blood vessels

Question 37

Cement

Answer 37

bone like substance that attaches to the root to the periodontal ligament

Question 38

Periodontal ligament

Answer 38

helps anchor the tooth to the underlying bone

Question 39

Apical foramen

Answer 39

opening at the base of the root canal where vessels enter.