Question:
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: In case of choke, the horse commonly regurgitate feed and water through nostrils
Reason R: This is due to anatomic characteristics of soft palate in equids
In light of the above statements, choose the correct answer from the options given below:
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: In case of choke, the horse commonly regurgitate feed and water through nostrils
Reason R: This is due to anatomic characteristics of soft palate in equids
In light of the above statements, choose the correct answer from the options given below:
Assertion A: In case of choke, the horse commonly regurgitate feed and water through nostrils
Reason R: This is due to anatomic characteristics of soft palate in equids
In light of the above statements, choose the correct answer from the options given below:
Show Hint
Horses are obligate nasal breathers. Their long soft palate lies ventral to the epiglottis, ensuring that any regurgitated material from the stomach or esophagus is routed through the nose rather than the mouth.
Updated On: Aug 13, 2026
- Both A and R are true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
"Choke" in horses refers to esophageal obstruction, typically caused by the ingestion of dry feed, beet pulp, or large foreign objects.
Unlike in humans or other animals, the clinical presentation of esophageal obstruction in horses involves a characteristic discharge of saliva, feed, and water from the nostrils.
Detailed Explanation:
Let us analyze both statements:
- Assertion A: When a horse suffers from choke, it cannot swallow saliva, water, or food. This material accumulates cranial to the esophageal obstruction and is regurgitated. Rather than exiting through the mouth, this mixture of feed, saliva, and water is expelled through the nostrils. Thus, Assertion A is true.
- Reason R: In equids, the soft palate is exceptionally long and fits tightly around the base of the epiglottis (intrapharyngeal ostium). This anatomical arrangement forms a physical seal that prevents air, food, or fluid from moving between the oral cavity and the pharynx during normal respiration. It makes horses obligate nasal breathers and prevents them from vomiting or regurgitating material through the mouth. Any regurgitated material arising from the esophagus or stomach is directed dorsal to the soft palate into the nasopharynx and exits through the nasal passages. Thus, Reason R is true and directly explains the anatomical cause of Assertion A.
Step 2: Final Answer:
Both A and R are true, and R is the correct explanation of A.
"Choke" in horses refers to esophageal obstruction, typically caused by the ingestion of dry feed, beet pulp, or large foreign objects.
Unlike in humans or other animals, the clinical presentation of esophageal obstruction in horses involves a characteristic discharge of saliva, feed, and water from the nostrils.
Detailed Explanation:
Let us analyze both statements:
- Assertion A: When a horse suffers from choke, it cannot swallow saliva, water, or food. This material accumulates cranial to the esophageal obstruction and is regurgitated. Rather than exiting through the mouth, this mixture of feed, saliva, and water is expelled through the nostrils. Thus, Assertion A is true.
- Reason R: In equids, the soft palate is exceptionally long and fits tightly around the base of the epiglottis (intrapharyngeal ostium). This anatomical arrangement forms a physical seal that prevents air, food, or fluid from moving between the oral cavity and the pharynx during normal respiration. It makes horses obligate nasal breathers and prevents them from vomiting or regurgitating material through the mouth. Any regurgitated material arising from the esophagus or stomach is directed dorsal to the soft palate into the nasopharynx and exits through the nasal passages. Thus, Reason R is true and directly explains the anatomical cause of Assertion A.
Step 2: Final Answer:
Both A and R are true, and R is the correct explanation of A.
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