Neurons and Their Functions

The video by Paul Andersen covers the basics of neurons, the fundamental units of the nervous system. It explains the anatomy of neurons, including the cell body, dendrites, and axon, and how they transmit signals through action potentials. The video also discusses the structural and functional classifications of neurons, such as multipolar, bipolar, unipolar, and axonic neurons, and their roles in sensory and motor functions.

What is the basic unit of the nervous system?

• Neuron

• Dendrite

• Axon

• Cell body

Which part of the neuron is responsible for receiving information?

• Myelin sheath

• Axon

• Dendrites

• Synapse

What is the function of the myelin sheath?

• To insulate the axon

• To receive neurotransmitters

• To transmit signals

• To connect neurons

What is the gap between two neurons called?

• Cell body

• Synapse

• Dendrite

• Axon

How are neurons classified structurally?

• By the number of poles coming off the cell body

• By the number of axons

• By the type of neurotransmitter

• By the length of the axon

Which type of neuron is most common in the human body?

• Multipolar neuron

• Unipolar neuron

• Axonic neuron

• Bipolar neuron

What type of neurons transmit information from sensory receptors to the central nervous system?

• Interneurons

• Motor neurons

• Sensory neurons

• Axonic neurons

Which neurons are responsible for sending information to muscles and glands?

• Sensory neurons

• Motor neurons

• Interneurons

• Axonic neurons

What is the role of interneurons?

• To transmit sensory information

• To connect sensory and motor neurons

• To insulate axons

• To send signals to muscles

Which type of neuron is not well understood and lacks an axon?

• Axonic neuron

• Multipolar neuron

• Bipolar neuron

• Unipolar neuron