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What is the basic unit of the nervous system and what is its function?
Answer: The basic unit of the nervous system is the neuron. Neurons
transmit electrical signals (action potentials) from one part of the body to
another, allowing for communication within the nervous system.
Rationale: This question tests the students' understanding of the
fundamental building block of the nervous system and its role in
transmitting signals.
2. What are the three main types of neurons and how do they function
differently?
Answer: The three main types of neurons are sensory neurons, motor
neurons, and interneurons. Sensory neurons transmit sensory information
from the body to the central nervous system. Motor neurons transmit
signals from the central nervous system to muscles and glands, resulting
in movement and the release of hormones. Interneurons connect sensory
and motor neurons within the central nervous system.
Rationale: This question assesses the students' knowledge of the different
types of neurons and their specific functions.
3. Explain the process of an action potential.
Answer: An action potential is a rapid change in the electrical potential
across the membrane of a neuron. It begins with a depolarization phase
when the neuron's membrane potential becomes more positive, followed
by a repolarization phase when the membrane potential returns to its
resting state. This is achieved through the opening and closing of ion
channels, specifically sodium and potassium channels.
Rationale: This question assesses the students' understanding of theÂ
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