[BME 235] Autonomic
Nervous System questions
with 100% correct
answers(100% accuracy)
In a nutshell, what is the autonomic nervous system? - answer It is the
self-governed nervous system (independent of our will). It controls HR, BP,
and temp. It is a motor nervous system.
What organs or structures does the autonomic nervous system act upon? -
answer It controls glands, cardiac muscle, and smooth muscle. Primarily
the viscera of thoracic and abdominal cavities.
What are visceral reflexes? Provide one example. - answer Visceral
reflexes are unconscious, automatic, stereotyped responses to stimulation
involving visceral receptors and effectors. Example: baroreceptors
controlling blood pressure.
What are the two main divisions of the ANS and how do they differ? -
answer Sympathetic (fight or flight) and parasympathetic (rest and digest)
How do the effector pathways of the ANS differ from those in the somatic
nervous system? - answer In the somatic pathway, a motor neuron from
brainstem or spinal cord issues a myelinated axon that reaches all the way
to skeletal muscles. In the autonomic pathway, a signal must travel across
two neurons to get to the target organ.
Where do sympathetic preganglionic neurons originate? - answer In the
lateral horns and nearby regions of spinal cord grey matter. Thoracic and
lumbar regions of the spinal cord.
Nervous System questions
with 100% correct
answers(100% accuracy)
In a nutshell, what is the autonomic nervous system? - answer It is the
self-governed nervous system (independent of our will). It controls HR, BP,
and temp. It is a motor nervous system.
What organs or structures does the autonomic nervous system act upon? -
answer It controls glands, cardiac muscle, and smooth muscle. Primarily
the viscera of thoracic and abdominal cavities.
What are visceral reflexes? Provide one example. - answer Visceral
reflexes are unconscious, automatic, stereotyped responses to stimulation
involving visceral receptors and effectors. Example: baroreceptors
controlling blood pressure.
What are the two main divisions of the ANS and how do they differ? -
answer Sympathetic (fight or flight) and parasympathetic (rest and digest)
How do the effector pathways of the ANS differ from those in the somatic
nervous system? - answer In the somatic pathway, a motor neuron from
brainstem or spinal cord issues a myelinated axon that reaches all the way
to skeletal muscles. In the autonomic pathway, a signal must travel across
two neurons to get to the target organ.
Where do sympathetic preganglionic neurons originate? - answer In the
lateral horns and nearby regions of spinal cord grey matter. Thoracic and
lumbar regions of the spinal cord.
