INTRO NS AND GROSS ANATOMY OF SPINAL CORD

Question 1

What is means by “Meninges”

Answer 1

Membrane

Question 2

Function of spinal cord?

Answer 2

Receives primary afferent (sensory) fibres from peripheral receptors in widespread somatic and visceral structures.

Sends motor axons (efferent) to skeletal muscle.

Provides communications highway between brain and periphery.

Houses preganglionic neurons of sympathetic nervous system.

Houses some preganglionic neurons of parasympathetic nervous system.

Question 3

The spinal cord is segmented or not?

Answer 3

The spinal cord is a segmental structure, giving rise to 31 paired spinal nerves.

Question 4

Cervical and lumbar related to which limb?

Answer 4

Two enlargements:

1. cervical is related to the upper limb
2. lumbar is related to the lower limb.