Question: What are the two main functions of spinal cord Class 11?

The spinal cord functions primarily in the transmission of nerve signals from the motor cortex to the body, and from the afferent fibers of the sensory neurons to the sensory cortex. It is also a center for coordinating many reflexes and contains reflex arcs that can independently control reflexes.

What are the functions of spinal cord Class 11?

– The spinal cord acts mainly in the transfer of nerve impulses from the motor cortex to the body. It also transfers information from the afferent fibres of the sensory neurons to the sensory cortex. It is also a hub for organising a variety of reflexes and includes reflex arcs that can individually control reflexes.

What are two functions of spinal cord?

The main functions of the spinal cord are:

  • To conduct reflexes below the neck.
  • To conduct messages from the skin and muscles to the brain.
  • To conduct commands from the brain to muscles of the trunk and limbs.

What is the structure and function of spinal cord?

Spinal cord and nerves: The spinal cord is a column of nerves that travels through the spinal canal. The cord extends from the skull to the lower back. Thirty-one pairs of nerves branch out through vertebral openings (the neural foramen). These nerves carry messages between the brain and muscles.

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Why is the spinal cord so important?

The spinal cord and the brain together constitute the Central Nervous System. It is an incredibly complex and intricate mesh of nerves. Functioning as the body’s main relay station, the CNS is responsible for all the basic functions of the body, such as breathing, walking, talking, movement, and reflexes.

What is spinal cord in short answer?

A column of nerve tissue that runs from the base of the skull down the center of the back. It is covered by three thin layers of protective tissue called membranes. The spinal cord and membranes are surrounded by the vertebrae (back bones).

What are the functions of spinal cord Class 9?

The spinal cord’s major functions include:

  • Electrochemical communication. Electrical currents travel up and down the spinal cord and across nerves, sending signals which allow different segments of the body to communicate with the brain.
  • Walking. …
  • Reflexes.

What does GREY matter in spinal cord do?

The grey matter includes regions of the brain involved in muscle control, and sensory perception such as seeing and hearing, memory, emotions, speech, decision making, and self-control. The grey matter in the spinal cord is split into three grey columns: The anterior grey column contains motor neurons.

Do all animals have a spinal cord?

All vertebrate animals have spinal cords. Phylogenetically, it is the oldest part of the central nervous system (CNS).

What are the parts of spinal cord?

The spinal cord is divided into four different regions: the cervical, thoracic, lumbar and sacral regions (Figure 3.1). The different cord regions can be visually distinguished from one another.

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