Question

In the ____________\(,\) neurons are arranged like maps that correspond to different parts of the body surface. a. visual cortex b. retina c. organ of Corti d. somatosensory cortex

Short answer

The correct answer is d. somatosensory cortex.

Step-by-step solution

Understanding the Problem

We need to identify which part of the nervous system contains neurons arranged in a manner that corresponds to different parts of the body surface.

Exploring the Options

We have four options: visual cortex, retina, organ of Corti, and somatosensory cortex. We need to determine which of these areas is organized in a map-like structure reflecting bodily representation.

Option Analysis

\(a\) Visual cortex: This area processes visual information, not directly related to body surface mapping.\(b\) Retina: Part of the eye related to image reception, not body surface mapping.\(c\) Organ of Corti: Located in the cochlea, responsible for hearing, not body surface mapping.\(d\) Somatosensory cortex: This brain region is known for its topographical organization corresponding to body areas.

Selection

The somatosensory cortex is the region where neurons are arranged like maps that correspond to different parts of the body surface.

Key concepts

Neuronal Mapping

Neuronal mapping in the brain refers to how neurons are arranged in a way that reflects different areas of the body. Think of it as a complex and detailed map inside your head. Each region in this map corresponds to specific body parts and functions. This is crucial because it allows different parts of the brain to communicate effectively and manage varying bodily functions. For instance, when you touch something, the sensation travels from your skin to the brain and gets processed in accordance with this map.

• This mapping is essential for perceptions and motor functions.
• It is incredibly detailed, even representing tiny nuances like pressure sensitivity.
• Mapping helps in the efficient processing and responding to stimuli.

Nervous System

The nervous system is an intricate and vital network. It transmits signals between various parts of the body and the brain, essentially acting as our body's communication highway. It is divided into two main parts: the central nervous system and the peripheral nervous system. Each has a specific role in ensuring our bodies function properly, responding promptly to changes in the environment.

• The central nervous system consists of the brain and spinal cord.
• The peripheral nervous system connects the limbs and organs to the central nervous system.
• This system is crucial for everything from reflex actions to complex thought processes.

Bodily Representation

Bodily representation in the brain is a fundamental concept that refers to how different areas of the body are organized and represented in the brain. It is important for understanding how the body interacts with its surroundings. For example, in the somatosensory cortex, each part of the body is mapped to a specific area, allowing precise control and awareness.

• This representation is not uniform; some areas like the hands and face have more brain space than others.
• The detailed map allows the brain to perform detailed sensory and motor tasks efficiently.
• Understanding this concept is crucial in fields like neurology and psychology.