Esophageal Sphincter

Q.

Describe the function of oesophagus.

Q.

Is the tongue the strongest muscle in the human body?

Q. Which part of alimentary canal does not produce any digestive enzyme?

1. Mouth
2. stomach
3. duodenum
4. oesophagus

Q.

Choose the odd one out:

1. Esophagus

2. Small intestine

3. Large intestine

4. Rectum

Q.

Describe the digestion of starch in the alimentary canal.

Q. The process that is involved with the movement of food in the oesophagus is called ________.

1. digestion
2. absorption
3. defecation
4. peristalsis

Q. Auerbach’s plexus and Meissner’s plexus are located in the:

1. Muscularis and submucosa layer respectively
2. Submucosa and muscularis layer respectively
3. Serosa and mucosa respectively
4. Submucosa and mucosa respectively

Q.

Lung alveoli of mammals have a thin wall composed of

1. Simple cuboidal epithelium

2. Simple squamous epithelium

3. Stratified cuboidal epithelium

4. Stratified squamous epithelium

Q.

The type of muscle fibres present in the alimentary canal are

1. Strioed muscle fibre
2. Smooth muscle fibres

3. Both A and B

4. Cardiac muscle fibre

Q. Succus entericus is secreted by ________.

1. Brunners glands
2. Both A and B
3. Crypts of Lieberkuhn
4. None of the above

Q.

Consider the following four statements and select the incorrect option, stating the ones that are true (T) and the ones that are false (F) :

I. Upper and Lower Esophageal Sphincters work with opposite peristaltic movements.

II. Entry of food into the stomach from the esophagus is mediated by receptive relaxation..

III. Myenteric plexus and Meissner's plexus help in lubrication of the esophagus.

IV. Failure in regulation of flow by Upper Esophageal Sphincter leads to GERD.

1. I.T II. T III.T IV.T

2. I. F II. T III. F IV.T

3. I.T II. F III.T IV. F

4. I.T II. T III.T IV. F

Q. Match the following sphincters with the location they are present in the GIT:

1. Anus
2. b/w Ileum & caecum
3. stomach & duodenum
4. Oesophagus & stomach

Q. Short / Long answer type questions.
Explain in detail the digestion of carbohydrates as the food passes through the alimentary canal.

Q. Short / Long answer type questions.
Is swallowing a voluntary or involuntary action?

Q. The junction between oesophagus and stomach is guarded by sphincter which is also known as the lower oesophageal sphincter.

1. cardiac
2. upper oesophageal
3. thoracic

Q. Regrading Assertion (A) and Reason (R), select the right option
(A) Cardiac sphincter prevents regurgitation.
(R) It prevents re-entry of food from small intestine to stomach.

1. If both (A) and (R) are true and (R) is the correct explanation of (A)
2. If both (A) and (R) are true but (R) is not the correct explanation of (A)
3. If (A) is true, but (R) is false
4. If (A) and (R) are false

Q. Match the following sphincters with the location they are present in the GIT:

1. Anus
2. b/w Ileum & caecum
3. stomach & duodenum
4. Oesophagus & stomach

Q. Which part of the mammalian alimentary canal does not secrete any enzyme?

1. Mouth
2. Oesophagus
3. Duodenum
4. Stomach

Q.

The long muscular tube that leads from buccal cavity to the stomach is called ______.

Q. Single-layer of flattened cells with boundaries is observed in all of the following except

1. Blood vessels
2. Lining of oesophagus
3. Air sacs of lungs
4. Both (A) and (B)

Q.

The sight of delicious food usuallu makes our mouth watery. It is a ________Hormonal response

Neural response

Optic response

Olfactory response

None of these

Q.

Mention one function of the following:

Esophagus

Q. What makes the movement of the food bolus in the oesophagus easy?

Q. The wall of alimentary canal from oesophagus to rectum possesses _________ layers.

1. $2$
2. $3$
3. $4$
4. $5$

Q. Column I contains names of the sphinter muscles of the alimentary canal and Column II contains their locations. Match them properly and choose the correct answer.

Column I	Column II
A. Sphincter of ani internus	1. Opening of hepatopancreatic duct into duodenum.
B. Cardiac sphincter	2. Between duodenum and posterior stomach.
C. Sphincter of Oddi	3. Guarding the terminal part of alimentary canal.
D. Ileocaecal	4. Between oesophagus and anterior stomach.
E. Pyloric sphincter	5. Between small intestine and bowel.

1. A-3, B-2, C-4, D-1, E-5
2. A-3, B-4, C-1, D-5, E-2
3. A-2, B-5, C-1, D-4, E-3
4. A-4, B-3, C-2, D-1, E-2

Q. The junction between oesophagus and stomach is guarded by sphincter which is also known as the lower oesophageal sphincter.

1. cardiac
2. upper oesophageal
3. thoracic

Q. Where is neuromotor connection observed?

1. Between nerve cell and sarcolemma of muscle
2. Between two nerve cells
3. Between two muscles
4. Both B and C

Q. A muscular structure that regulates the opening of the oesophagus into the stomach is known as

1. Epiglottis
   
2. Lower esophagus sphincter
3. Sphincter of Oddi
4. Pyloric sphincter

Q. The process that is involved with the movement of food in the oesophagus is called ________.

1. digestion
2. absorption
3. peristalsis
4. defecation

Q.

Which of the following is not an involuntary action?

1. vomiting

2. salivation

3. heartbeat

4. chewing