Understanding Neurons and Neuroanatomy

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

• To digest food

• To produce hormones

• To store energy

• To process thoughts, actions, and feelings

Which part of the neuron receives chemical messages?

• Myelin sheath

• Soma

• Axon

• Dendrites

What is the role of the myelin sheath?

• To store nutrients

• To produce neurotransmitters

• To protect and speed up nerve impulses

• To slow down nerve impulses

What is the function of Schwann cells?

• To transmit electrical impulses

• To form the myelin sheath in the peripheral nervous system

• To store energy

• To produce neurotransmitters

What is the role of glial cells in the brain?

• To digest nutrients

• To produce hormones

• To protect and support neurons

• To conduct electrical impulses

What happens during the process of reuptake?

• Neurotransmitters are destroyed

• Neurotransmitters are converted into energy

• Neurotransmitters are reabsorbed by the original neuron

• Neurotransmitters are absorbed by the postsynaptic neuron

What is the state of a neuron before it sends a signal?

• Depolarized

• Polarized

• Neutral

• Repolarized

What is the all-or-none principle in neuron firing?

• Neurons fire continuously without stopping

• Neurons either fire completely or not at all

• Neurons fire partially depending on the stimulus

• Neurons fire only when they are fully charged

What happens when a neuron becomes depolarized?

• It releases neurotransmitters

• It stops firing

• It becomes positively charged inside

• It becomes negatively charged inside

What is the refractory period in neuron firing?

• A period when a neuron cannot fire again immediately

• A period when a neuron releases neurotransmitters

• A period when a neuron can fire continuously

• A period when a neuron is fully charged