Question

Nerves that only carry impulses away from the central nervous system (CNS) are called:

a. motor nerves.b. afferent nerves.c. mixed nerves.d. sensory nerves.

Answer 1

Nerves that only carry impulses away from the central nervous system (CNS) are called: a. motor nerves.

What is Motor nerves ?

Efferent nerves, also referred to as motor nerves, are responsible for sending impulses from the brain or spinal cord to muscles and glands.

Signals from the central nervous system (CNS), namely the brain and spinal cord, are transferred to the body's muscles and glands by motor nerves. These impulses, sometimes referred to as motor impulses, regulate the release of certain substances by glands and permit both voluntary and involuntary muscular actions.

Answer 2

motor Nerves.

Step-by-step explanation:

These are bundles of axon of the spinal cord located in the CNS. They originated at the motor cortex of the brain.

They conduct response signals out of the CNS through the spinal cord to reach the effector(muscles).These signals pass through the brain stem and the spinal cord ipsillaterially, to emerge at the ventral side of the spinal cord to terminate at the skeletal muscles or the smooth muscles.

The bundles of AXON are called FASICICLES

They are bundle of axons which transduce signals from the CNS to peripheral neurons of the muscles of the body.They are different from the motor neuron which have their cell bodies in the spinal cord and dendrites at the terminal ends.

However, they communicated with the muscles they innervated through the motor neuron at the terminal.

They have high concentration of neurotransmitter acetylcholine vesicles for chemical transmission at synapse, and calcium ion in the presynaptic motor nerves for migration of the vesicles for increasing the size of end-plate potential