Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

GI > Alimentary Canal > Flashcards

Alimentary Canal Flashcards

1
Q

What separates the alimentary canal and their role

A

Sphincters: important in moving the food

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Function of the mouth and oesophagus

A

lubricate and chop food. Begins carbohydrate digestion aided by the secretion of amylase by the saliva glands.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Function of the oesophagus

A

Actively propels food into the stomach

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Function of the stomach

A

chruns and stores food. Begins protein digestion by the secretion of pepsin and continues carbohydrate digestion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

components and role of the small intestine

A

duodenum, jejunum, and ileum

main site of digestion and absorption

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Large intestine components

A

caecum, appendix and colon

colon dries out and condenses material (absorbs nutrients) before deivery to rectum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Rectum and anus

A

storage and regulated expulsion of faeces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Accessory Structures

A

Saliva glands
pancreas
liver and gall bladder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

roles of the alimentary canal

A

Motility
Secretion
Digesiton
Absorption

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Types of Smooth muscle in GI motility and their effect

A

circular: longer and narrower lumen
Longitudinal: wider and shorted pancreas
muscularis mucosae: change mucus area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what does single unit smooth muscle mean?

A

adjacent smooth muscles inked by syncytium

allows all cells to depolarise and contract together

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Syncytium

A

merging of cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

slow waves

A

electrical activity in stomach small intestine and large intestine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

pacemaker of slow waves

A

interstitial cells of Cajal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

basic electrical rhythm

A

determined by slow waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

BER of stomach, small intestine and large intestine

A

stomach: 3 waver per minute
Small intestine: 12 duodenum and 8 terminal ileum waver per minute
Large intestine: 8 proximal and 16 distal waves in colon

17
Q

enteric nervous system

A

branch of the autonomic nervous system that governs the gi tract

18
Q

parasympathetic control of GI

A

preganglionic fibres synapse in the enteric nervous system

19
Q

sympathetic control of GI

A

preganglionic fibres synapse in prevertebral ganglia

postgaglionic fibres innervate in the enteric nervous system

20
Q

neurones in the enteric nervous system

A

Sensory neurones
Interneurons
Effector neurones

21
Q

Peristalsis

A

GUT
a wave of relaxation, followed by contraction, that normally proceeds along the gut in an aboral direction – triggered by distension of the gut wall

22
Q

aboral direction

A

anal

23
Q

Segmentation

A

INTESTINE
alternate waves of contraction and relaxation
allows thorough mixing of food and enzymes

24
Q

Cholinic mass movement

A

LARGE INTESTINE

strong waves of contraction to move the colons contents towards the rectum

25
Q

Migrating motor complex

A

SMALL INTESTINE

contraction forcing contents from the duodenum to the ileum

26
Q

Tonic Contractions

A

sustained contractions
low pressure contractions in storage organs e.g. stomach
high pressure contractions in sphincters

27
Q

Sphincter

A

specialised circular muscle, act as one way valves for the movement of food

28
Q

Upper oesophageal sphincter

A

skeletal muscle
relaxes to allow swallowing
closes during inspiration

29
Q

Lower oesophageal sphincter

A

opens to allow food to enter stomach

closes to prevent gastric reflux

30
Q

Pyloric sphincter

A

regulates gastric emptying

prevents duodenal reflux

31
Q

Pyloric

A

connects stomach to duodenum

32
Q

Ileocecal valve

A

between small and large intestine

regulates flow from ileum to caecum

33
Q

Internal anal sphincter

A

defecation reflex

34
Q

External anal Sphincter

A

skeletal muscle

defecation reflex

GI (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions