Parts of spinal cord and their functions

Several spinal nerves emerge out. The spinal cord is a bundle of nerve fibers that extend from the brain stem down the spinal column to the lower back.

Cervical thoracic lumbar sacral and coccygeal.

Parts of spinal cord and their functions. In adults the spinal cord is usually 40cm long and 2cm wide. It forms a vital link between the brain and the body. The spinal cord is divided into five different parts.

Several spinal nerves emerge out. Like the vertebral column the spinal cord is divided into segments. Cervical thoracic lumbar sacral and coccygeal.

Each segment of the spinal cord provides several pairs of spinal nerves which exit from vertebral canal through the intervertebral foramina. There are 8 pairs of cervical 12 thoracic 5 lumbar 5 sacral and 1 coccygeal pair of spinal nerves a total of 31 pairs. The main function of the spinal cord consists of transmitting nerve impulses to the 31 pairs of nerves of the medulla oblongata.

In this way the spinal cord is the region responsible for communicating the encephalon to the body. Basically spinal cord functions can be broadly categorized into two parts first information transmission and second reflex coordination. The spinal cord has a crucial role to play in various functions of our body including the movement of our limbs and the transmission of sensory and motor nerve impulses to and from the brain.

The spinal cord comprises three parts. The cervical neck thoracic chest and lumbar lower back regions. Three layers of tissue protect the spinal cord.

The spinal cord is a bundle of nerve fibers that extend from the brain stem down the spinal column to the lower back. A component of the central nervous system it sends and receives information between the brain and the rest of the body. The spinal cord is composed of neurons that send and receive signals along tracts towards and away from the brain.

The Spinal Cord Your spinal cord is part of the central nervous system which comprises the spinal cord and the brain. It transmits messages to and from the brain. It has involuntary functions such as control of blood pressure body temperature and breathing as well as voluntary functions such as movement.

The spinal cord is soft. Key parts of your spine include vertebrae bones disks nerves and the spinal cord. The spine supports your body and helps you walk twist and move.

The disks that cushion vertebrae may compress with age or injury leading to a herniated disk. Exercises can strengthen the core muscles that support the spine and prevent back injuries and back pain. Communicates between left and right of body.

-where interneuron and sensory fibers enter spinal cord. -cell bodies of neurons. Motor neurons send messages out to affectors.

Carries out sensory info to brain and motor nerves. What are the main functions of the spinal cord. Spinal cord function can be split into three different areas.

It is a highway of communication from the brain sending messages to other parts of the body including instructing muscles that control movement. The spinal cord is a column of nerves that connects your brain with the rest of your body allowing you to control your movements. Without a spinal cord you could not move any part of your body and your organs could not function.

This is why keeping your spine healthy is vital if you want to live an active life. Following spinal cord transection patients have no knowledge of events occuring below the level of the lesion and have no motor control over their muscles below that level. However neural pathways in the spinal cord below the lesion continue to function and these pathways are responsible for the reflex activities of the detached length of cord.

Connects the spinal cord to other parts of the brain. Carries nerve impulses between the brain and spinal nerves. Cervical Nerves 8 pairs These nerves supply the head neck shoulders arms and hands.

Thoracic Nerves 12 pairs Connects portions of the upper abdomen and muscles in the back and chest areas. The nervous system has two main parts. The central nervous system is made up of the brain and spinal cord.

The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body. The nervous system transmits signals between the brain and the rest of the body including internal organs. In this way the nervous systems activity controls.

The top of the spinal cord merges with the brain stem where the basic processes of life are controlled such as breathing and digestion. In the opposite direction the spinal cord ends just below the ribscontrary to what we might expect it does not extend all the way to the base of the spine. The spinal cord is functionally organized in 30 segments corresponding with the vertebrae.

The peripheral nervous system consists of 12 pairs of cranial nerves 31 pairs of spinal nerves and all their branches. Spinal nerves originate from spinal cord segments and innervate the body. Cranial nerves originate from the brainstem predominantly innervating the head and neck region.

Functionally the PNS can be divided into the somatic. The spinal cord can be divided into the lateral posterior and medial cord each segment of which gives rise to specific nerves and serves specific areas of the body. The somatic nervous system is responsible for voluntary body movements receiving information.

C1 The C1 segment of the spinal cord is unique in that it does not typically have a dermatome. However because it is the uppermost segment of the spinal cord most sensory and motor functions throughout the body may be affected. C2 The C2 segment is connected to sensation at the back of the head ears and upper area of the neck.

The muscles directly affected by C2 spinal cord.