The Fascinating World of Neurons and the Nervous System

The video tutorial explains the nervous system's role in sensing the environment, focusing on neurons as the basic building blocks. It details the components of a neuron: the cell body, dendrites, and axon, and describes their functions. The process of transmitting nerve impulses from one neuron to another, eventually reaching the brain or spinal cord, is also covered.

What is the primary function of the nervous system?

• To produce hormones

• To sense things around us

• To digest food

• To circulate blood

Which of the following is NOT a component of a neuron?

• Receptor

• Cell body

• Dendrites

• Axon

What is the function of dendrites in a neuron?

• To protect the neuron

• To store energy

• To transmit impulses to the brain

• To pick up impulses from receptors

What is the myelin sheath made of?

• Minerals

• Carbohydrates

• Fats and proteins

• Vitamins

How do neurons carry messages?

• Through electrical signals called nerve impulses

• Through light signals

• Through sound waves

• Through chemical signals

What is the junction called where one neuron passes impulses to another?

• Synapse

• Receptor

• Axon

• Dendrite

Where are nerve impulses finally delivered?

• To the brain or spinal cord

• To the stomach

• To the heart

• To the lungs