NEURO EXAM 1 STUDYGUIDE EXAM
(ACTUAL EXAM) WITH 180+ QUESTIONS
WITH VERY ELABORATED ANSWERS
CORRECTRY WELL ORGANIZED LATEST
2024 – 2025 ALREADY GRADED A+
Which of the following is FALSE regarding refractory periods?
a. The absolute refractory period follows the relative refractory period
b. The relative refractory period makes it so that a stronger stimulus will result in
more frequent action potentials.
c. During the absolute refractory period, voltage gated sodium channels are either
open or inactive.
d. During the relative refractory period, a stronger stimulus is required to get to
threshold. - ANSWERS-a. The absolute refractory period follows the relative
refractory period Correct
,After the AP is finished, what protein helps restore the electrochemical ion
gradients?
a. Sodium potassium pump
b. Voltage gated potassium channels Incorrect
c. Voltage gated sodium channels
d. The electrochemical gradients are not restored - ANSWERS-a. Sodium
potassium pump
Somatic afferent nerves - ANSWERS-carry sensory signals from the skin, skeletal
muscles, joints, eyes, ears to the CNS
Somatic efferent nerves - ANSWERS-carry motor signals from the CNS to the
skeletal muscles (voluntary muscles)
Autonomic afferent nerves - ANSWERS-carry the sensory signals from internal
organs to the CNS
Autonomic efferent nerves - ANSWERS-carry motor signals from the CNS to
internal organs; involuntary muscles
There are Two kins of efferent/motor nerves int eh autonomic nervous system -
ANSWERS-Sympathetic: (fight or flight)
,Parasympathetic: (rest and digest)
Efferent Autonomic nerves: Sympathetic - ANSWERS-readies the body for activity,
use of energy; if we perceive a threat to our well-being or survival, this system is
in charge. (e.g. increase in heart rate, blood pressure)
Efferent Autonomic Nerves:Parasympathetic - ANSWERS-readies the body for
restoration of energy and res (E.g. decreases in heart rate, blood pressure)
CNS: Overview of Function
The primary Functions of the CNS - ANSWERS-1. Creating sensory Reality:
Evolution has equipped each species with a view of the world that helps it survive
2.Integrating information: Current knowledge can be compared with past
knowledge
Spinal Cord - ANSWERS-Located within the vertebral column.
Transfers information between CNS and PNS
, Pair of spinal nerves are attached to the cord at 31 different levels
Sensory information enters the dorsal (back) portion, and motor commands exit
on the ventral stomach
Dorsal root Ganglia - ANSWERS-The axons of dorsal root ganglion neurons are
known as afferents. Sensory inputs come through and enter the dorsal horns in
the gray matter then travels to to the ventral horns with he interneurons which
go to the then gives a a motor response
Central Nervous System - ANSWERS-Inside the skull and spinal column (Brain and
spinal cord)
Neuron - ANSWERS-basic unit of the nervous system
Peripheral Nervous System - ANSWERS-Outside the skull and the spine
(Everything else)
PNS has two divisions: - ANSWERS-Somatic nervous system
Autonomic nervous system
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