Question

Topic: The Spinal Cord i need some information on it make sure its at least 250 words.

Answer 1

ANSWER: SPINAL CORD: Spinal cord is a thin, long tubular structure made up of nervous tissue extending from the base of the brain to the lumbar region of the vertebrae. It encloses the central canal of spinal cord which contains CSF. The function of spinal cord is to transmit the signal from the motor cortex of the brain to the effector organ of the body and also forms the afferent fibres of the sensory neurons to the sensory cortex. It also serves as a centre for reflexes and contains reflex arc that can act independently to control reflexes. The spinal cord is surrounded by three layers of meninges. The outer most covering is the duramater, Arachnoid mater being the middle layer and piamater is the inmermost layer. The cord is stabilized within the duramater by connecting with the Denticulate ligaments. The spinal cord is divided into sements of spinal nerves from. Spinal nerves are of 31 pairs of which 8pairs arise from cervical segments, 12pairs from the thoracic part, 5 pairsfrom lumbar part, 1pairs from Coccygeal part and 5 from the sacral part. There are two regions where the spinal cord gets enlarged. They are the cervical enlargement corresponds roughly to the brachial plexus and lumbar enlargement comprises the lumbosacral plexus. The major blood supply of spinal cord is by the anterior and posterior radicular artery. The largest of the radicular artery is the artery of Adamkiewiz, which usually arises from between L1 and L2 , but it can also arise anywhere from from T9 to L5. The clinical significance of spinal cord is the spinal cord injury. This spinal cord injury can caused due to trauma. Damage to upper motor neuron axes can result in ipsolateral deficits. These include hyperreflexia, hypertonia and muscle weakness. Lower motor neuron damage resulta in specific deficits which includes hypotonia, hyporeflexia and muscle atrophy.