lecture 20

Question 1

the GI system is specialised for what functions?

Answer 1

motility
secretion
digestion
absorption

Question 2

epithelium in the mouth/oral cavity and esophagus?

Answer 2

stratified squamous for protection from abrasion

Question 3

epithelium in stomach and large and small intestine?

Answer 3

simple columnar secretion and absorption

Question 4

epithelium in anal canal?

Answer 4

stratified squamous for protection from abrasion

Question 5

features of goblet cells?

Answer 5

columnar
goblet shape
apical mucous granules
basal nucleus

Question 6

two types of glands?

Answer 6

simple

compound

Question 7

what invaginates to form glands?

Answer 7

epithelium

Question 8

four layers of the gut tube starting from most luminal?

Answer 8

mucosa
submucosa
muscularis
adventitia

Question 9

mucosa consists of?

Answer 9

epithelium
lamina propria (FCT)
muscularis mucosa

Question 10

what are the two layers of the muscularis?

Answer 10

inner circular

outer longitudinal

Question 11

Where is the myenteric plexus and what does it regulate?

Answer 11

motility and inbetween two layers of muscularis

Question 12

what is the additional layer when organs are in the peritoneal cavity?

Answer 12

serosa

Question 13

what is retroperitoneal?

Answer 13

posterior to the peritoneum

Question 14

what is the mesentery?

Answer 14

double layer of visceral peritoneum that connects organ to body wall

Question 15

what is the omenta?

Answer 15

double layer of visceral peritoneum that connects an organ to another organ

Question 16

what are the 3 salivary glands?

Answer 16

parotid
sublingual
submandibular

Question 17

what does the parotid gland secrete?

Answer 17

serous fluid with amylase

Question 18

what does sublingual gland secrete?

Answer 18

mucous

Question 19

what does the submandibular gland secrete?

Answer 19

a mix

Question 20

salivary glands are what kind of gland?

Answer 20

compound secretory glands

Question 21

what do acinar cells secrete?

Answer 21

enzymes

Question 22

what do duct cells secrete?

Answer 22

bicarbonate

Question 23

how long is the oesophagus?

Answer 23

~25cm

Question 24

where is the oesophagus?

Answer 24

posterior to trachea

Question 25

what is the oesophagus?

Answer 25

basic tube modified to pass food

Question 26

what mucosa is in the oesophagus?

Answer 26

stratified squamous

Question 27

what is the role of the muscularis externa in the oesophagus?

Answer 27

move down food bolus

Question 28

how does the oesophagus muscularis change as you move down?

Answer 28

skeletal muscle smooth and skeletal smooth muscle

Question 29

what is the purpose of mucous in the esophagus?

Answer 29

for lubrication and protection

Question 30

what secretes mucous in the oesophagus?

Answer 30

no goblet cells instead have glands with ducts to surface