Layers of Esophagus

Q. Choose the correct set of statements about the anatomical features of the alimentary canal:
I. Outermost layer in the wall of the alimentary canal is serosa
II. Secretory glands occur in mucosa layer of the alimentary canal
III. Muscularis layer consists of both longitudinal and circular muscles
IV. Myenteric plexus is the bunch of nerves responsible for controlling gut’s intrinsic peristaltic activity

1. Only I
2. Only II
3. Only III and IV
4. I, II, III, IV

Q. Where can we find Brunner’s glands in the alimentary canal and also match it with its characteristic feature?

1. Serosa → outermost layer of alimentary canal made up of a thin mesothelium with some connective tissue
2. Muscularis → it is formed by smooth muscles usually arranged into an inner longitudinal and outer circular layer
3. Submucosal layer of duodenum → formed of loose connective tissue, containing nerves, blood and lymph vessel
4. Mucosal layer → It forms rugae in stomach and villi in the small intestine

Q. Plexus of Meissner is

1. a network of neurons
2. present in muscularis
3. responsible for the digestion of proteins
4. an enzyme

Q. Read the following statement with two blanks I and II. Select the correct option given.

Skin is acting as ________I__________ because of the presence of ________II_________.

1. I - cytokine barrier, II - fats
2. I - physical barrier, II - epidermis
3. I - physical barrier, II - oils
4. I - physiological barrier, II - hypodermis

Q. Match the following with their correct options according to their presence in different layers of GIT:

1. Mesothelium
2. Myenteric plexus
3. Meissner's plexus
4. Lamina propria

Q.

Identify the following parts labeled 1, 2, 3 and 4.

1. 1. Muscularis 2. Submucosa 3. Mucosa 4. Serosa

2. 1. Serosa 2. Muscularis 3. Submucosa 4. Mucosa

3. 1. Mucosa 2. Serosa 3. Muscularis 4. Submucosa

4. 1. Submucosa 2. Mucosa 3. Serosa 4. Muscularis