Was ist ein Nerv?

The video tutorial explains the role and structure of nerves in the peripheral nervous system, highlighting their function in transmitting signals to the central nervous system. It details the anatomy of neurons, including axons and myelin sheaths, and discusses the impact of myelin damage, such as in multiple sclerosis. The tutorial also covers the types of peripheral nerves, distinguishing between brain and spinal nerves, and describes the formation of nerve plexuses.

What is the primary function of nerves in the peripheral nervous system?

• To transmit excitation

• To produce hormones

• To store energy

• To filter blood

Which part of the neuron is responsible for receiving signals?

• Axon

• Dendrites

• Myelin sheath

• Cell body

What is the role of myelin sheaths in neurons?

• To store genetic information

• To produce neurotransmitters

• To insulate axons and speed up signal transmission

• To connect neurons to muscles

How do brain nerves differ from spinal nerves?

• Brain nerves are part of the CNS

• Brain nerves originate in the brain

• Brain nerves are not involved in sensory functions

• Brain nerves originate from the spinal cord

What happens when spinal nerves form nerve plexuses?

• They maintain a strict segmental outline

• They become part of the central nervous system

• They lose their ability to transmit signals

• They mix and overlap fibers during development