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NPB 101 MIDTERM 1 (PART 2) QUESTIONS AND ANSWERS 100% CORRECT!!
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NPB 101 MIDTERM 1 (PART 2) QUESTIONS AND ANSWERS 100% CORRECT!!
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NPB 101 MIDTERM 1 (PART 2) QUESTIONS ANDANSWERS 100% CORRECT!!
What are the 3 types/sections of the nervous system?
Answers :Central, peripheral, enteric nervous system
What is the central nervous system?
Answers :Includes the brain and spinal cord
What is the peripheral nervous system?
Answers :Nerve fibers
What is the enteric nervous system?
Answers :Nerve network in the digestive tract
What does the peripheral nervous system include?
Answers :Afferent and Efferent division
What is the difference between the afferent and efferent division?
Answers :Afferent: Receives info from stimuli and sends to CNS
Efferent: Info that exits the CNS
What are the 2 subdivisions of the efferent division?
Answers :Somatic and autonomic nervous system
What is the difference between the somatic and autonomic nervous system?
,Answers :Somatic NS: involves fibers of motor neurons that supply skeletal
muscles (you can control this)
Autonomic NS: involves fibers that innervate smooth muscle, cardiac muscle and
glands (this you can't control)
What are the subdivisions of autonomic NS?
Answers :Sympathetic: preps for strenuous activity
Parasympathetic: maintain resting functions
Describe the general path of signals/info through the nervous system(s).
Answers :Signals from stimuli (both sensory and visceral);afferent division; CNS;
efferent division; somatic or autonomic system; (if under autonomic, either through
sympathetic or parasympathetic); effector organs
What are the functional classes of neurons?
Answers :Afferent, efferent, interneurons
Where are the functional classes of neurons located in the nervous system
respectively?
Answers :Afferent/Efferent=peripheral
Interneurons in CNS
What are the features that protect the CNS from injury?
Answers :Cranium and vertebral column (bony parts)
Meninges (membrane; 3 of them)
Cerebrospinal fluid
Blood brain barrier
, What are the layers of the meningeal membrane>
Answers :(outside) Dura mater, arachnoid mater, pia mater (inside)
Why is cerebrospinal fluid important?
Answers :It is what the brain floats around in and cushions both it and the spinal
cord
Why is the blood brain barrier important?
Answers :It regulates what is exchanges between the blood and the brain; keeps
bacteria, fungi, viruses and parasites out
What does the brain depend on for nourishment?
Answers :Oxygen and glucose
What does the CNS allow us to do?
Answers :Subconsciously regulate homeostatic responses
Experience emotions
Voluntarily control movements
Be aware of body and surroundings
Engage in other higher cognitive processes
What are the components of the brain?
Answers :Forebrain
Cerebellum
Brain stem
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