The Question is from neet-zoology neural-control-and-coordination central-neural-system, and it was created by the author T HARITHA

Question

During a neurosurgical procedure, stimulation of a specific brain region causes a dramatic increase in heart rate and respiration. Which region is MOST likely being stimulated?

T HARITHA · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
 **Primary Concept**: Autonomic Nervous System and Brainstem function
 **Related Topics**: Cardiovascular control, Respiratory control, Medulla Oblongata,  Brainstem nuclei
 **Prerequisites**: Basic understanding of the autonomic nervous system (sympathetic and parasympathetic branches), and the location and function of the brainstem.
## SOLUTION PATHWAY
**Given Information**:
  Stimulation of a brain region leads to increased heart rate and respiration.
  Options: Thalamus, Medulla Oblongata, Corpus Callosum, Pituitary Gland
**Method & Steps**:
 1. Identify the brain region responsible for autonomic functions controlling heart rate and respiration.
  Reasoning: The autonomic nervous system (ANS) regulates involuntary functions like heart rate and breathing.  The brainstem plays a crucial role in the ANS.
  Formula/Rule: N/A
 2. Determine which option is part of the brainstem and directly involved in cardiovascular and respiratory control.
  Working: The medulla oblongata is a part of the brainstem that contains vital centers regulating heart rate, blood pressure, and respiration.  The other options are not directly involved in these functions.
  Key Point: The medulla oblongata contains the cardiovascular and respiratory centers.
 3. Select the most likely brain region based on its known functions.
  Result: Medulla Oblongata
  Verification: The symptoms (increased heart rate and respiration) directly correlate with the known functions of the medulla oblongata's cardiovascular and respiratory centers.
 ## OPTION ANALYSIS
A :x: Thalamus: Primarily involved in relaying sensory and motor signals, not directly in autonomic control.
B ✓: Medulla Oblongata: Contains the cardiovascular and respiratory centers, directly controlling heart rate and respiration.
C :x: Corpus Callosum: Connects the two cerebral hemispheres; not involved in autonomic control.
D :x: Pituitary Gland: Primarily an endocrine gland; while it indirectly influences some autonomic functions through hormonal release, it's not the primary region responsible for the immediate changes described.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing the thalamus with the hypothalamus (hypothalamus is involved in autonomic control, but not the primary region for the described effects): To avoid this, remember that the thalamus is primarily a sensory relay station.
  2.Overlooking the medulla oblongata's role in vital autonomic functions: Focusing on the overall context of the question—a dramatic increase in heart rate and respiration—will help identify the medulla oblongata's crucial role.
 **Quick Tips**:
  1.Remember the medulla oblongata's location in the brainstem and its role in vital functions.
  2.Associate increased heart rate and respiration with the sympathetic nervous system, which is heavily influenced by the medulla oblongata.

T HARITHA · Answer

Thalamus

T HARITHA · Answer

The correct Option is "Medulla Oblongata"

T HARITHA · Answer

Corpus Callosum

T HARITHA · Answer

Pituitary Gland

NEET Zoology Neural Control And Coordination Central Neural System MCQs

Select Topic

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

NEET Subjects

Our Bots

Company