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Biology: The Unity and Diversity o...
Biology: The Unity and Diversity o...
In the central nervous system, all synapses are in the
- a. cerebellum
- b. brain stem
- c. gray matter
- d. spinal cord
Introduction: Central nervous system consists of the brain and spinal cord. Synapse is the region where neurotransmitter (a signaling molecule) released by the axon terminals signals another cell. The signal-sending neuron at the synapse is called presynaptic cell, and the signal-receiving neuron is called postsynaptic cell. The bulk of the brain and the spinal cord have two visibly distinct tissues: gray matter and white matter.
Reasons for the correct statement:
Gray matter is pinkish gray tissue that includes neuronal cell bodies, dendrites, axon terminals, and glial cells. All synapses of the central nervous system are located within the gray matter.
Hence, option c. is correct.
Reasons for the incorrect statement:
Option a. is given as “cerebellum”. Cerebellum is the part of the central nervous system. It controls the voluntary movements and plays a role in learning new motor skills. All synapses of the central nervous system are located within the gray matter. So, option a. is incorrect answer.
Option b. is given as “brain stem”...
Chapter 32 Solutions
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