What is a nerve?

In this tutorial, Matt from Kenhub explains what nerves are, their structure, and their function. Nerves are crucial components of the peripheral nervous system, connecting the body to the brain and spinal cord. Neurons, the cells within nerves, have axons and dendrites for sending and receiving impulses. The myelin sheath insulates these cells, and damage to it can affect impulse transmission. The video also covers the two types of nerves: cranial and spinal, detailing their roles and how they form nerve plexuses. Finally, viewers are encouraged to explore more resources on Kenhub.

What is the primary function of an axon in a neuron?

• To connect neurons

• To insulate the neuron

• To send impulses

• To receive impulses

What is the role of the myelin sheath in nerve cells?

• To connect the brain to the spinal cord

• To insulate the axon and speed up impulse transmission

• To protect the brain

• To transmit sensory information

How many pairs of cranial nerves are there?

• 14 pairs

• 16 pairs

• 12 pairs

• 10 pairs

Where do spinal nerves emerge from?

• The cranial cavity

• The spaces between the vertebrae

• The brain

• The heart

What is the function of sensory routes in the spinal column?

• To send motor signals to muscles

• To carry sensory information to the brain

• To insulate the spinal cord

• To connect cranial nerves