Jarvis chapter 23 - Neurologic System.pdf
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1. NERVOUS SYS- can be divided into two parts:
TEM
CENTRAL (CNS)
PERIPHERAL (PNS)
2. CENTRAL NER- brain and spinal cord
VOUS SYSTEM
(CNS)
3. PERIPHERAL includes all of the nerve fibers OUTSIDE the brain and spinal cord
NERVOUS
SYSTEM (PNS) 12 pairs of cranial nerves
31 pairs of spinal nerves
4. CEREBRAL COR- outer layer of nerve cell bodies
TEX
looks like "gray matter" because it lacks myelin
CENTER for a human's highest functions governing:
- thought
- memory
- reasoning
- sensation
- voluntary movement
5. HEMISPHERE the cerebrum is divided into TWO halfs
left hemisphere (controls right side of body)
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, Jarvis chapter 23 - Neurologic System
Jarvis chapter 23 - Neurologic System.pdf
Study online at https://quizlet.com/_4lyqnu
right hemisphere (controls left side of body)
each hemisphere is divided into four lobes
- frontal
- parietal
- occipital
- temporal
6. AFFERENT "STIMULUS"
peripheral nervous system carries SENSORY messages TO the central nervous
system from sensory receptors
7. EFFERENT "RESPONSE"
peripheral nervous system carries MOTOR messages FROM the central nervous
system out to muscles and glands
sends autonomic messages that govern internal organs and blood vessels
8. AUTONOMIC part of the peripheral nervous system
NERVOUS
SYSTEM (ANS) acts as a control system for visceral functions including:
- heart rate
- digestion
- salivation
- perspiration
9. FRONTAL LOBE personality
behavior
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, Jarvis chapter 23 - Neurologic System
Jarvis chapter 23 - Neurologic System.pdf
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emotions
intellectual function
10. PRECENTRAL located in the frontal lobe
GYRUS
initiates voluntary movement
11. PARIETAL LOBE postcentral gyrus is the primary center for sensation
12. OCCIPITAL LOBE primary visual receptor center
13. TEMPORAL LOBE primary auditory reception center
with functions of hearing, taste and smell
14. WERNICKE'S in the temporal lobe
AREA
associated with language comprehension
when damaged in person's dominant hemisphere, receptive aphasia results
15. RECEPTIVE person hears sound
APHASIA
sounds have no meaning
like hearing a foreign language
16. BROCA'S AREA located in the frontal lobe
mediates motor speech
person can't talk
when injured in the dominant hemisphere, expressive aphasia results
Actualstudy 3
, Jarvis chapter 23 - Neurologic System
Jarvis chapter 23 - Neurologic System.pdf
Study online at https://quizlet.com/_4lyqnu
17. EXPRESSIVE person can understand language
APHASIA
knows what they want to say
cannot talk; may produce garbled sounds
18. THALAMUS the main relay station where the sensory pathways of the spinal cord, cerebellum,
basal ganglia and brainstem form synapses on their way to the cerebral cortex
19. HYPOTHALAMUS major respiratory center with basic vital functions:
- body temperature
- appetite
- sex drive
- heart rate
- blood pressure
regulates sleep
regulates anterior and posterior pituatary gland
autonomic nervous system
stress response
20. CEREBELLUM concerned with motor coordination of voluntary movements, equilibrium, and
muscle tone. doesn't initiate motor movement but it coordinates it and smooths
it.
21. BASAL GANGLIA control autonomic movements of the body
i.e. arm swing alternating with the legs during walking
22. BRAINSTEM midbrain
Actualstudy 4