Layers of Stomach

Q.

In context with the adaptations of the stomach in humans, fill in the blanks by choosing the correct option :

The stomach in humans is lined with an extra layer of (i)__________ for better mixing and churning of food. It even has numerous folds called (ii)________ to increase the area of absorption with many inner mucosal secretory glands called (iii)_________for the production of enzymes and has specially formulated (iv) ________ to protect the walls of the stomach from the action of HCl.

1. i).➡ Rugae, ii).➡ Gastric glands, iii).➡ Mucus, iv). ➡ Muscle

2. i).➡ Gastric glands, ii).➡Mucus, iii).➡ Muscle, iv). ➡ Rugae

3. i).➡ Muscle, ii).➡ Rugae, iii).➡ Gastric glands, iv). ➡ Mucus.

4. i).➡ Mucus, ii).➡ Muscle, iii).➡ Rugae, iv). ➡ Gastric glands

Q. Choose the correct statement(s):

1. There are three parts of stomach named as cardia, body and pylorus.
2. Pylorus has two regions. Pylorus opens into small intestine through the pyloric orifice.
3. Stomach is the food reservoir and it digests food only chemically with the help of enzymes.
4. Pyloric sphincter is located in the pyloric orifice. It is made up of a thick band of circular muscles.

Q. Label the highlighted regions:

1. Fundus
2. Body
3. Cardia
4. Pylorus

Q. Apart from the longitudnally oriented muscle layer, the stomach has for effective churning and mixing in the stomach.

1. rugae
2. oblique muscles
3. gastric glands
4. HCl

Q. Match the following with the correct option:

1. Oblique muscle
2. Rugae
3. Gastric gland
4. Foveolar layer mucus

Q. Select the incorrect pair of condition and consequence based on human digestion and absorption.

1. Parietal cell secretion blocked: Proteins are not hydrolyzed and decrease in RBC population
2. Congenital absence of enterokinase: Carbohydrate digestion
3. Cholecystectomy: Difficulty in digestion of fat-rich food
4. Goblet cells non-functional: Smooth movement down the intestine affected

Q. Auerbach’s plexus is located in the

1. submucosa
2. muscularis
3. serosa
4. mucosa

Q. The irregular folds of the inner wall of stomach are called

1. papilla of vater
2. rugae
3. villi
4. fissure

Q. Choose the correct sequence of the layers of the alimentary canal from the inner to outer layer

1. Serosa $\to$ Muscularis$\to$ Submucosa$\to$ Mucosa
2. Muscularis$\to$ Serosa$\to$ Mucosa$\to$ Submucosa
3. Mucosa$\to$ Submucosa$\to$ Muscularis$\to$ Serosa
4. Submucosa$\to$ Mucosa$\to$ Muscularis$\to$ Serosa

Q. Choose the correct sequence of the layers of the alimentary canal from the inner to outer layer

1. Serosa $\to$ Muscularis$\to$ Submucosa$\to$ Mucosa
2. Muscularis$\to$ Serosa$\to$ Mucosa$\to$ Submucosa
3. Mucosa$\to$ Submucosa$\to$ Muscularis$\to$ Serosa
4. Submucosa$\to$ Mucosa$\to$ Muscularis$\to$ Serosa