PNS Exam Review

Front

What is a motor neuron?

Back

A motor neuron is a type of neuron that carries signals from the central nervous system to muscles, causing them to contract and produce movement.

Front

What is the Cauda Equina?

Back

The Cauda Equina is a bundle of spinal nerves and spinal nerve rootlets that extend beyond the end of the spinal cord, resembling a horse's tail.

Front

What cranial nerve is affected in Bell's Palsy?

Back

The Facial nerve (Cranial Nerve VII) is affected in Bell's Palsy, leading to temporary weakness or paralysis of the muscles on one side of the face.

Front

What is the function of the Accessory nerve?

Back

The Accessory nerve (Cranial Nerve XI) controls the muscles that shrug the shoulders and turn the head.

Front

Which cranial nerve is responsible for vision?

Back

The Optic nerve (Cranial Nerve II) is responsible for transmitting visual information from the retina to the brain.

Front

What is the role of interneurons?

Back

Interneurons are neurons that connect sensory and motor neurons within the central nervous system, playing a crucial role in reflexes and processing information.

Front

What is the function of sensory neurons?

Back

Sensory neurons transmit sensory information from receptors to the central nervous system, allowing the body to perceive stimuli.

Front

What is the function of the Vagus nerve?

Back

The Vagus nerve (Cranial Nerve X) controls involuntary functions such as heart rate, digestion, and respiratory rate.

Front

What is the role of the Trigeminal nerve?

Back

The Trigeminal nerve (Cranial Nerve V) is responsible for sensation in the face and motor functions such as biting and chewing.

Front

What is the function of the Olfactory nerve?

Back

The Olfactory nerve (Cranial Nerve I) is responsible for the sense of smell.