Brainscape's Knowledge GenomeTM

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


See full index

HUBS 192 > Lecture 20 > Flashcards

Lecture 20 Flashcards

1
Q

What is the primary function of the GI System?

A

Bring nutrients into the internal environment so they can be used

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

What are features of the general structure of the GI System?

A
  • Long tube with outgrowths
  • Closed off at both ends (sphincters)
  • Lined by epithelium
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How are epithelia classified>

A

Shape, number of layers and specialisations

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

Where is Satisfied squamous epithelium found?

A

Mouth/Oral cavity, esophagus and Anal canal

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

Role of stratified squamous epithelium?

A

Protection from abrasion

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

Where is simple columnar epithelium found?

A

Stomach, small intestine and large intestine

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

What is the role of simple columnar epithelium?

A

Secretion and absorption

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

Where are goblet cells located?

A

In between columnar epithelium of the small intestine

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

Features of Goblet cells?

A

Columnar
Goblet shape
Apical mucous granules
Basal nucleus

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

What are multicellular glands?

A

Epithelium that invaginate to form glands.

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

What are the two types of multicellular glands?

A

Simple - gland with single duct (stomach and small intestine).
Compound - gland with 2 or more ducts (salivary glands)

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

What are the four layers of the gut tube?

A

Mucosa
Submucosa
Muscularis
Adventitia `

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

What does the mucosa consist of?

A

Epithelium
Lamina propria
Muscularis Mucosae
sometimes glands

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

What does the submucosa contain?

A

Glands

Blood vessels

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

How is secretion regulated in the sub-mucosa?

A

Submucosal nerve which is part of the enteric nervous system

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

What are the main components of the muscularis?

A

Smooth muscle
- Inner circular
- outer longitudinal
Myenteric plexus

17
Q

What is the Myenteric plexus?

A

Part of the enteric nervous system.
In. between muscle layers.
Regulates Motility

18
Q

What is the Serosa?

A

An additional outer covering for organs in the peritoneal cavity but not included as one of the four layers.

19
Q

What is the adventitia made up of ?

A

Fibrous connective tissue

20
Q

What is the peritoneum?

A

A serous membrane, consists of parietal layer that lines the body wall and visceral layer that lines the organs. Between these layers is a fluid filled space.

21
Q

What does retroperitoneal mean?

A

Posterior to the peritoneum.

22
Q

What is a mesentery?

A

Double layer of visceral peritoneum that connects organ to body wall.

23
Q

What is the omenta?

A

Double layer of visceral peritoneum that connects an organ to another organ.

24
Q

What are the three pars of salivary glands connected to oral cavity via ducts?

A

Parotid - serous fluid with amylase
Sublingual - Mucous only
Submandibular - Mixed

25
Q

Structure of Salivary glands?

A

Compound secretory glands.

Cells in clusters - acinus

26
Q

What do Acinar cells secrete?

A

Acinar cells secrete enzymes (amylase)

27
Q

What do Duct cells secrete?

A

Duct cells secrete bicarbonate (buffering)

28
Q

Location of esophagus?

A

Posterior to the Trachea, extends from pharynx to stomach

29
Q

Role of Epiglottis?

A

Ensures that food enters the esophagus and not the trachea

30
Q

Structure of esophagus?

A

Basic Tube modified to pass food. Highly fold submucosa and mucosa so it has the capacity to expand.

31
Q

What is the role of the Muscularis in the esophagus?

A

Move food bolus

32
Q

What types of muscle are found in the esophagus?

A

First 1/3 skeletal
Middle 1/3 A mixture
Last 1/3 smooth muscle

33
Q

Why is mucosa important in the esophagus?

A

Lubrication and Protection

34
Q

How is the mucosa in the esophagus different?

A

No goblet cells, instead have glands with ducts to surface

HUBS 192 (37 decks)

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