Layers of Stomach

Q.

What are the $4$ layers of the alimentary canal?

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. How is digested fat absorbed ?

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

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

Q. Which of the following statement is incorrect w.r.t. histology of alimentary canal?

1. Serosa is the outermost layer made up of a thin mesothelium and connective tissue
2. Muscularis layer is formed by smooth muscles usually arranged in inner longitudinal layer and outer circular layer
3. Submucosal layer is composed of loose connective tissue
4. Mucosa is the innermost layer lining the lumen of the alimentary canal

Q.

how many types of spinchter are present in stomach

Q.

What are goblet cells ?

Q. Auerbach’s plexus is located in the

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

Q. How is small intestine designed to absorb digested food?

1. Villi are transverse folds of intestinal wall that increase surface area of absorption.
2. Lined by epithelium, which is specialized to absorb.
3. Villi possess blood capillaries and lacteals (lymph vessels) for quick transport of absorbed food.
4. All of the above.

Q.

_____________ cell secrete mucus.

Q. The factor which governs the absorption of digested food by intestinal villi is

1. Peristalsis
2. Osmosis
3. Emulsification
4. Differential absorption

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

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

Q. Which of the following component of gastric juice inactivates ptyalin?

1. Pepsin
2. Mucus
3. Rennin
4. HCl

Q. Auerbach’s plexus is located in the

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

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.

What are the goblet cells?

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. Label the highlighted regions:

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

Q. In human female the blastocyst

Q. In which layer of stomach are gastric glands located?

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

Q. Select the condition and its consequence based on human digestion and absorption: Condition Consequence

A.	Parietal cell secretion blocked	I.	Smooth movement down the intestine affected
B.	Cholecystectomy	II.	Protein digestion hindered
C.	Goblet cells non-functional	III.	Proteins not hydrolyzed; decrease in RBC population
D.	Congenital absence of enterokinase	IV.	Difficulty in digestion of lipid-rich food

1. A-II, B-I, C-IV, D-III
2. A-III, B-IV, C-I, D-II
3. A-III, B-I, C-IV, D-II
4. A-II, B-IV, C-I, D-III

Q. Amino acids are absorbed in

1. Blood cappillaries of villi
2. Wall of rectum
3. Lacteals and blood capillaries of villi
4. Lacteals of villi

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).$\to$ Muscle, ii).$\to$ Rugae, iii).$\to$ Gastric glands, iv). $\to$ Mucus.

2. i).$\to$ Rugae, ii).$\to$ Gastric glands, iii).$\to$ Mucus, iv). $\to$ Muscle

3. i).$\to$ Gastric glands, ii).$\to$ Mucus, iii).$\to$ Muscle, iv).$\to$ Rugae

4. i).$\to$ Mucus, ii).$\to$ Muscle, iii).$\to$ Rugae, iv).$\to$ Gastric glands

Q.

As you eat more food, stomach expands to accomodate it. What structure makes this possible?

Q. Match the following with the correct option:

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

Q. Which of the following statements regarding small intestine are incorrect?
(i) Throughout the small intestine, there are crypts of Lieberkuhn at the base of the villi.
(ii) In duodenum, there are, in addition, small rounds peptic glands.
(iii) The small intestine is strongly -self-protective; by means of a copious production of mucus and a mechanism for the rapid replacement of cells I damaged by contact with fooiLapd. digestive juices.
(iv) Each villus is richly supplied with blood capillaries only.

1. (i) and (iv)
2. (i) and (ii)
3. (ii) and (iv)
4. (iii) and (iv)

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. If the chyme of a person who had orally consumed only starch as food is analyzed before it enters the duodenum, it will show the presence of

1. Dextrin and maltose
2. Maltose and glucose
3. Starch, dextrin and maltose
4. Starch, dextrin and glucose

Q. Match the following with the correct option:

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