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CNS correct answers brain and spinal cord how many cervical spine? correct answers 7 how many cervical nerves correct answers 8 PNS correct answers cranial and spinal nerves the spinal nerves correct answers 12 thoracic 5 lumbar 5 sacral 1 coccygeal somatic nervous system corre...

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  • September 17, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
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CSD 505 A&P comps || with 100% Verified Solutions.
CNS correct answers brain and spinal cord

how many cervical spine? correct answers 7

how many cervical nerves correct answers 8

PNS correct answers cranial and spinal nerves

the spinal nerves correct answers 12 thoracic
5 lumbar
5 sacral
1 coccygeal

somatic nervous system correct answers conscious sensation and voluntary control of muscles

automatic nervous system correct answers controls functions critical to life
sympathetic (fight or flight)
parasympathetic (rest and digest, conserve energy for growth)

BETWEEN neurons, signals are sent correct answers chemically from axons to dendrites

WITHIN neurons, signals are sent correct answers electrically from dendrites to axons

4 lobes correct answers frontal, parietal, occipital, temporal

cerebellum correct answers the "little brain" behind the brainstem; functions include processing
sensory input and coordinating movement output and balance

cerebrum correct answers Area of the brain responsible for all voluntary activities of the body
left side of brain is responsible for right side of brain and vice versa

gray matter correct answers folded up layers of tissue

white matter correct answers contains axons that transmit impulses from gray matter

corticospinal tract correct answers connections between brain and spine
UMN synapse with LMN then those exit spinal cord to muscles

dorsal columns correct answers vibration sense, position sense (body in space)

spinothalamic tract correct answers pain and temperature info

anterior circulation correct answers internal carotid arteries which supply to anterior 2/3 of the
brain

, posterior circulation correct answers vertebral arteries which supply to posterior 1/3 of the brain
including brain stem and cerebellum

meninges correct answers several layers of tissue that separate CNS from skull bone, surrounds
the brain

4 parts of meninges correct answers dura matter (directly below bone of skull)
arachnoid matter
subarachnoid space (blood supply)
pia matter (covers brain and spinal cord)
epidural space

6 neurotransmitters correct answers Acetylcholine,
Dopamine,
GABA,
Glutamate,
Norepinephrine,
Serotonin

contralateral control correct answers right motor - sensory by left brain
left motor- sensory by right brain

CN I correct answers Olfactory (smell sensory)

CN II correct answers Optic (vision sensory)

CN III correct answers Oculomotor (eye motor)

CN IV correct answers Trochlear (eye motor)

CN V correct answers Trigeminal (face sensory, jaw motor)

CN VI correct answers Abducens (eye motor)

CN VII correct answers Facial (tongue 2/3 taste , facial motor)

CN VIII correct answers Vestibulocochlear (ear sensory)

CN IX correct answers Glossopharyngeal (tongue 1/3 taste, pharynx sensory and motor)

CN X correct answers Vagus (larynx and down sensory)

CN XI correct answers accessory (neck motor)

CN XII correct answers Hypoglossal (tongue motor)

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