AIIMS 201827 May
- Exam
- AIIMS
- Year
- 2018
- Date
- 27 May
- Subject
- Zoology
- Chapter
- Breathing and Exchange of Gases
AIIMS 2018 · 27 May · Zoology · Breathing and Exchange of Gases
Assertion : The dorsal respiratory group (DRG) present in the...
Assertion : The dorsal respiratory group (DRG) present in the dorsal portion of medulla oblongata mainly causes expiration. Reason : The ventral respiratory group (VRG) on the ventrolateral part of medulla oblongata mainly controls inspiration.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion.
- BIf both assertion and reason are true but reason is not the correct explanation of assertion.
- CIf assertion is true but reason is false.
- DIf both assertion and reason are false.
Correct answer
D. If both assertion and reason are false.
Step-by-step solution
Dorsal respiratory group is a type of group located in dorsal portion of the medulla oblongata which mainly causes inspiration. Ventral respiratory group is located in the ventrolateral part of the medulla oblongata which can cause either inspiration or expiration depending upon the neurons stimulated.