Understanding Neurons and Glial Cells

What is the primary function of neurons in the human body?

• To store energy

• To transmit messages or nerve impulses

• To produce hormones

• To provide structural support

Which part of the neuron is responsible for sending messages away from the cell body?

• Dendrites

• Axons

• Myelin Sheaths

• Cell Body

How do myelin sheaths affect nerve impulse transmission?

• They slow down the transmission

• They have no effect on transmission

• They insulate the fibers, increasing the rate of transmission

• They change the direction of transmission

What role do astrocytes play in the nervous system?

• They transmit nerve impulses

• They form a barrier between capillaries and neurons

• They produce myelin sheaths

• They act as phagocytes

Which of the following is a characteristic of microglia?

• They are star-shaped cells

• They are involved in transmitting nerve impulses

• They are spider-like phagocytes

• They produce hormones