ATI RN
Questions About Nervous System Questions
Question 1 of 5
Identify the cranial nerve that has branches to serve internal organs.
Correct Answer: C
Rationale: The vagus nerve (CN X) serves internal organs (e.g., heart, lungs, gut) with autonomic fibers. Others are motor/sensory for head/neck.
Question 2 of 5
What is the primary structural and functional unit of the nervous system?
Correct Answer: B
Rationale: The neuron is the primary structural and functional unit of the nervous system, responsible for signal transmission. Neurotransmitters are chemicals, neuroglia support, and 'nerew' is a typo for nerve.
Question 3 of 5
Neurons communicate with each other by releasing chemical messengers known as:
Correct Answer: C
Rationale: Neurotransmitters (e.g., dopamine) are chemicals released at synapses for neuron communication. Hormones are endocrine, antibodies immune, and enzymes catalyze.
Question 4 of 5
Which part of a neuron contains the nucleus and most of the cell's organelles?
Correct Answer: D
Rationale: The cell body (soma) contains the nucleus and organelles, integrating signals. Axon conducts, dendrite receives, and axon hillock initiates.
Question 5 of 5
Schwann cells play a crucial role in the process of:
Correct Answer: D
Rationale: Schwann cells aid peripheral nerve regeneration by clearing debris and guiding regrowth. Synaptic transmission is chemical, transport is axonal, neurogenesis is CNS.