lab 3 - digestive

Question 1

epithelium, lamina propria, muscularis mucosae

Answer 1

layers of the mucosa

Question 2

Inner lining of digestive
tract

Answer 2

mucosa

Question 3

Dense irregular connective tissue, Surrounds mucosa layer

Answer 3

submucosa

Question 4

Support, protection
and nutrition to other
layers

Answer 4

functions of submucosa

Question 5

Smooth muscle Arranged in 2 layers: Inner circular layer, Outer longitudinal layer Contains nerves: Myenteric plexus

Answer 5

Muscularis Externa

Question 6

Responsible for motility and
peristalsis

Answer 6

functions of muscular externa

Question 7

Outer covering; found in
areas with peritoneum

Answer 7

serosa

Question 8

Outer covering of oral
cavity, pharynx, esophagus, and rectum

Answer 8

adventitia

Question 9

mechanical digestion, chemical digestion, lubrication, sensory analysis

Answer 9

functions of the oral cavity

Question 10

soft/hard palates, tongue

Answer 10

oral cavity

Question 11

passageway for food/
liquids, and air, Connects oral cavity to esophagus

Answer 11

pharynx

Question 12

assit in swallowing

Answer 12

function of pharynx

Question 13

Hollow, muscular tube, Carries solids and liquids from the pharynx to the stomach

Answer 13

esophagus

Question 14

Undigested food is
temporarily stored,Located in upper left abdominal cavity, Connects esophagus to small intestines

Answer 14

stomach

Question 15

funds, cardia, body, pylorus

Answer 15

regions of the stomach

Question 16

Superior, dome portion

Answer 16

fundus

Question 17

Stomach-esophageal
junction

Answer 17

cardia

Question 18

Between the fundus and
the “curve”

Answer 18

body

Question 19

Narrow region before
small intestines

Answer 19

pylorus

Question 20

Ridges and folds in relaxed stomach; allows expansion

Answer 20

rugae

Question 21

Smooth muscle between stomach and duodenum, Guards exit of stomach

Answer 21

pyloric sphincter

Question 22

Extra layer of smooth muscle
in muscular external, Inner most layer

Answer 22

oblique layer

Question 23

forms the long, convex, lateral border of the stomach

Answer 23

greater curvature

Question 24

forms the shorter, concave, medial surface of the stomach

Answer 24

lesser curvature

Question 25

Begins at pyloric sphincter; Curves around head of pancreas

Answer 25

duodenum

Question 26

Receives stomach contents, pancreatic juice and bile

Answer 26

duodenum

Question 27

Most digestion and nutrient absorption occur here

Answer 27

Jejunem

Question 28

Next 8 ft. (in upper abdomen), Tall circular folds; prominent villi, thick, muscular walls

Answer 28

jejunem

Question 29

No prominent border b/t jejunum, Smaller circular folds and villi compared to jejunum

Answer 29

lieum

Question 30

Ends at ileocecal junction with large intestine, last 12ft in lower abdomen

Answer 30

ileum

Question 31

Has peyer’s patches, Clusters of lymphatic nodules, Some reabsorption, Vitamins, bile salts, some nutrients

Answer 31

ileum functions

Question 32

Transverse folds of the mucosa and submucosa layers

Answer 32

Circular folds (Plicae circulares)

Question 33

Fingerlike projections of the mucosa, contain blood vessels and lymphatics, Nutrient absorption

Answer 33

villi

Question 34

Extensions of the epithelial cell surface, absorption

Answer 34

microvilli

Question 35

Lymphatic capillaries in villi, Absorb fat

Answer 35

lacteals

Question 36

First section of LI, Receives digested contents of small intestines, Contains Vermiform Appendix

Answer 36

cecum

Question 37

Absence of villi, Presence of goblet cells, Deep intestinal crypts/glands

Answer 37

colon

Question 38

Last portion of the digestive tract, Storage of feces, Terminates at the anal canal

Answer 38

rectum

Question 39

Exit point for feces, wastes and undigested remains

Answer 39

anal cavity

Question 40

Regulates food entering large intestines, Prevents feces from entering small intestines

Answer 40

ileocecal valve

Question 41

Control defecation through anus

Answer 41

internal/ external sphincter

Question 42

attaches stomach to liver

Answer 42

lesser omentum

Question 43

covers small intestines

Answer 43

greater omentum

Question 44

holds colon

Answer 44

mesocolon

Question 45

holds small intestines to posterior wall

Answer 45

mesentery proper