Chapter1 (Q15) Answer all of the following questions.1. For each pair of terms, explain the relationship between the terms
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a. Stimulant and depressant
b. Motor neuron and sensory neuron
C. Brain stem and diencephalon
d. Resting potential and action potential Answer
a. Stimulant is a drug which increases (stimulates) the activities of the nervous system.
Depressant is a drug which lowers (depress) the activities of the nervous
b. Sensory neuron is a neuron that gets information about what is going on system.
inside and outside of the body and brings that information into the brain or
the spinal cord.
Motor neuron is a neuron that gets information from the brain or spinal cord
and conveys commands to the effector organs such as muscles and glands.
C. Brain stem is a part of the brain that consists of midbrain, pons and medulla
oblongata.
Diencephalon is a part of the brain that consists of thalamus and
hypothalamus.
d. Resting potential is the state in which the neuron is not conducting a nerve
impulse.
Action potential is the state in which the neuron is conducting a nerve
impulse.
Action potential is a localised change in the resting membrane potential
between the inside and outside of the nerve fibre caused by a stimulus