MCAT Biology : Somatic and Autonomic Divisions
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Example Question #201 : Biology
Efferent neurons carry information in what direction?
From afferent neurons to the central nervous system (CNS)
From the central nervous system (CNS) to the peripheral nervous system (PNS)
From the central nervous system (CNS) to afferent neurons
From the peripheral nervous system (PNS) to the central nervous system (CNS)
From the brain to the spinal cord
From the central nervous system (CNS) to the peripheral nervous system (PNS)
Efferent neurons carry information from the central nervous system (CNS) to the peripheral nervous system (PNS). Afferent neurons carry information from the peripheral nervous system to the central nervous system.
In general, afferet neurons will relay sensory information about the environment (both internal and external), carrying these signals from the periphery to the central nervous system for integration and interpretation in the brain. Efferent neurons, in contrast, will carry motor signals or other internal stimuli to respond to the sensory information provided.
Example Question #2 : Somatic And Autonomic Divisions
The amygdala is located in which part of the brain?
Corpus collosum
Cerebellum
Brain stem
Temporal lobe
Temporal lobe
The amygdala is responsible for emotional memory and is part of the limbic system, which is located in the temporal lobe.
Example Question #2 : Somatic And Autonomic Divisions
Under which division of the nervous system does the "fight or flight" impulse originate?
Sensory division
Autonomic division
Central nervous system
Somatic division
Parasympathetic division
Autonomic division
The nervous system is divided into the central nervous system (brain and spinal cord) and peripheral nervous system (all other nerves). The peripheral nervous system is then divided into the sensory and motor divisions. Then, the motor division is further divided into the somatic and autonomic divisions. The autonomic division is then divided into the parasympathetic ("rest and digest") and sympathetic ("fight or flight") divisions.
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