Digestive Tube, Histology

Front 1

The Mucosa or membrane, usually folded in empty condition of gut is made up of?

Back 1

Surface epithelium
glands
lamina propria
muscularis mucosa

Front 2

Surface epithelium generally is _____ type of tissue.

Back 2

simple columnar non ciliated

Front 3

Galnds generally tubular shape functions include

Back 3

digestive enzymes, mucous and endocrine secretions

Front 4

lamina propria or corium may present ____ ____ of nodular or diffuse type.

Back 4

lymphoid infiltration

Front 5

muscularis mucosa is made up of smooht muscle, functions are

Back 5

move mucous membrane (M.M) and to evacuatre glandular secretions

Front 6

The digestive tube is made up of four layers, what are they

Back 6

1. mucosa or mucous membrane
2. submucosa
3. musculosa
4. adventitia

Front 7

In submucosa the autonomic nerves and ganglia for the ____ plexus.

Back 7

meissner's

Front 8

Musculosa. in between the circular and longitudnal layers of muscles there is a plexus of autonomic nerves and ganglia called the ______ or _____ plexus.

Back 8

myentric, auerbachs

Front 9

Adventitia or fibrous layer may be covered by peritoneum , in which case this layer will be called _____.

Back 9

serosa
made up of mesothelial cells (simple squamos)

Front 10

esophagus is muscular tube that connects _____ to _____

Back 10

pharynx, stomach

Front 11

in the esophagus the mucosa is folded when empty, its surface epithelium is_______

Back 11

strat squamos non-kera

Front 12

glands at the lower end of esophagus are called ____

Back 12

cardiac glands

Front 13

the mucous secretion of cardiac glands in esophagus do what?

Back 13

neutralize the effect of regurgitating stomach acid

Front 14

Stomach is the widest part of the ?

Back 14

digestive tube

Front 15

the mucosa of the stomach is folded in empty condition forming______.

Back 15

rugae

Front 16

the surface epithelium in the stomach shows invaginations called ___ ____?

Back 16

gastric pits

Front 17

the ___ glands, at eh body and fundus, are branched tubuar lined by what 4 types of cells?

Back 17

fundic
1. mucous neck cells
2. peptic or chief cells
3. parietal or oxyntic cells
4. argentaffin or enterochromaffin cells

Front 18

mucous neck cells secrete____ to protect the mucous membrane surface against gastric juice?

Back 18

mucus

Front 19

peptic or chief cells secrete ____ for protein digestion.

Back 19

pepsinogen

Front 20

parietal or oxyntic cells secrete ____ and the ___ ____ _____

Back 20

1. HCL
2. intrinsic anti- anemia factor

Front 21

Argentaffin or enterochromaffin are endocrine cells secreting _____, a vasoconstrictoe and possibly ______.

Back 21

1. serotonin
2. gastrin

Front 22

The pyloric glands are made up mainly of _____ and ____

Back 22

1.mucous secreting cells
2. argentaffin cells

Front 23

In the muscuosa of the stomach, in the pyloric portion neat the opening of the pylorus, the inner circular layer is thickened to form the ___ _____.

Back 23

pyloric sphincter

Front 24

The small intestine is longest segment of G.I.T (about 7 meters) it consists of?

Back 24

duodenum
jejunum
ileum

Front 25

The small intestines main function are

Back 25

digestion and absorption

Front 26

the mucosa of small intestines show characteristics ____ folds that are permanent in nature.

Back 26

circular

Front 27

in the small intestines the free border of columnar cells appear under E.M. to have numerous_____ which increase culluar surface area for absoprtion

Back 27

microvilli

Front 28

in the small intestines the lamina propria support the glands and ______where it extends as a core of C.T. inside villi

Back 28

villi

Front 29

in duodenum and beginning of jejnum, villi show dilated lymphatic vessels called______ for ______ of fat

Back 29

1. central lacteals
2. absorption

Front 30

in ileum, nodules of lyphoid tissue aggregate to form masss known as ________?

Back 30

peyers patches

Front 31

small intestine glands or (leiberkuhn glands are lined up by what four types of cells?

Back 31

1. undifferentiated columnar cells- stem cells
2. paneth cells- produce digestive enzymes
3. goblet cells-increase in number from duodenum to ieum
4. enterochromaffin cells- secrete serotonin,secretin and cholecystokinin

Front 32

the submucosa of small intestines show some glands in proximal part of duodenum called ____ or_______ glands

Back 32

duodenal
brunners

Front 33

the large intestine consists of ??

Back 33

cecum
appendix
colon
rectum
anal canal

Front 34

main functions of large intestine is?

Back 34

absorption of fluid and secretion of mucous

for lubrication and easy passage of fecal material

Front 35

the surface epithelium of large intestines is made up of?

Back 35

simple columnar absorptive cells and numerous goblet cells

Front 36

the glands of the large intestine are lined by what three type of cells?

Back 36

1. undifferentiated columnar cells
2. many goblet cells (for lubrication)
3. enterochromaffin cells

Front 37

in the musculosa, the muscle fibers of the longitudinal layer into three bands of muscle called _____? (in the cecum and colon)

Back 37

tenia coli

Front 38

the fibrous layer of large intestines may be covered by peritoneum, in these sites, tag-like protuberances made of_____ tissue are called _______ _______.

Back 38

1. adipose
2. appendices epiploicae

Front 39

In the Appendix the lamina propria is heavily infiltrated with______ tissue

Back 39

lymphoid

Front 40

The anal canal, at the proximal part, mucous membrane has two longitudinal folds called ____ or _____ columns?

Back 40

1. rectal
2. anal

Front 41

in the anal canal the musculosa of the distal portion shows thickening of its inner layer to constitute the ____ ____

Back 41

internal sphincter (involuntary)

Front 42

outside fibrous layer of anal canal there are the skeletal muscle fibers of the _______ external_______

Back 42

1. voluntary
2. anal sphincter