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Chapter 16: Problem 133

Vomit center is situated at (a) Pons (b) Mid-brain (c) Cerebellum (d) Medulla

Short Answer

Expert verified
The 'vomit center' is located in the Medulla.

Step by step solution

01

Recognizing the Brain Structure

First, understand what each option represents. The Pons, Mid-brain, Cerebellum, and Medulla are all part of the brain's structure. Each of them carries different functions.
02

Identifying the Function

The next step is to connect the 'vomit center' with its correct brain location. The 'vomit center' is a region of the brain responsible for inducing the vomiting reflex. This information is generally memorized in biological and medical sciences.
03

Matching the Brain Structure with its Function

Finally, match the 'vomit center' with its corresponding structure. The 'vomit center' is located in the Medulla Oblongata.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Brain Structure
The brain is an intricate and powerful organ that acts as the control center of the body. It consists of various parts, each specialized for different functions. Some of the key components include:
  • Pons: This is involved in regulating breathing and communication between different parts of the brain.
  • Mid-brain: This part is responsible for motor movement and audio-visual processing.
  • Cerebellum: Known for managing balance, coordination, and fine motor skills.
  • Medulla: This controls automatic functions like heart rate and breathing, and also houses the vomit center.
Understanding these structures helps identify where specific processes occur in the brain.
Vomiting Reflex
The vomiting reflex is a complex bodily function that begins in the brain. This reflex protects the body by expelling harmful substances from the stomach. It is controlled by the central nervous system and triggered by some key signals:
  • Sensory signals from the stomach or intestines: These are detected by the brain when a toxic substance is ingested.
  • Vestibular system signals: Responsible for motion sickness, sending signals to the brain when there is a disturbance in balance.
  • Higher brain center signals: Emotional responses such as stress and fear can also trigger vomiting.
These signals relay information to initiate the vomiting reflex, ultimately leading to the expulsion of gastric contents.
Medulla Oblongata
The Medulla Oblongata is a critical part of the brainstem that connects the brain to the spinal cord. It plays a vital role in managing involuntary functions necessary for survival. Some key roles include:
  • Regulation of cardiovascular and respiratory systems: This includes controlling the heartbeat and breathing rate.
  • Reflex centers: It is home to reflex centers that manage gagging, swallowing, and vomiting, including the vomit center.
The vomit center in the Medulla Oblongata is specifically responsible for the coordination of signals that cause vomiting. This area orchestrates the reflex by integrating messages from different parts of the body, thereby triggering a series of motor responses leading to vomiting.

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