Nervous system Flashcards

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1
Q

what are the two parts/regions of the nervous system

A

central nervous system and the peripheral nervous system

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2
Q

CNS

A

brain and spinal cord

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3
Q

PNS

A

all body nerves

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4
Q

meninges

A

three layers of protective membrane surrounding the brian and spinal cord

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5
Q

cerebrail fluid

A
  • circulates between the menings of the brain and through the spinal cords
  • acts as a shock absorber and transport medium for nutrients
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6
Q

spinal cord

A

extension of the brain
- carries sensory nerve messages from receptors to the brian and relays motor nerve messages from the brain to muscles, organs, and glands

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7
Q

where does the spinal cord connect to the brain

A

through a hole at the bottom of the skull called the foramen magnum this region is also know as the brain stem

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8
Q

number of hemispheres in the brain

A

2

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9
Q

what seperates to hemispheres of the brain

A

sagittal crest

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10
Q

what is the right side of the brain responsible for

A

visual patterns, spacial awarness, and artistic skills

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11
Q

what is the left side of the brain responsible for

A

verbal skills, deductive reasoning, logic and mathmatics

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12
Q

number of lobes found within the brain

A

8
- 4 lobes in each hemisphere
- one of each type of lobe in both halfs of the brain

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13
Q

frontal lobe

A

movement, speech, personality, reasoning, planning, decision making

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14
Q

temproal lobe

A

hearing, language, memory

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15
Q

occipital lobe

A

visual interpretation

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16
Q

parietal lobe

A

pain, touch, temp, position, emotions

17
Q

what are the 4 types of lobes found within the brain

A

frontol, temprol, occipital and parietal lobe

18
Q

three regions of the brain

A

forebrain, midbrain, hindbrain

19
Q

forebrain

A

olfactory, cerebrum, thalamus, hypothalamus
- front, top and middle of the brain
- occupies around 75% of the brain

20
Q

Midbrain

A

eye and ear reflexes

21
Q

hindbrain

A

cerebellum, pons, medulla oblongata

22
Q

cerebellum

A

fine motor movement and balance

23
Q

pons

A

pelay station that passes information

24
Q

medulla oblengata

A

controls key muscle functions (breathing)

25
Q

corpus callosum

A

connects the two hemispheres which allows information to be passed back and forth

26
Q

thalamus

A

coordinates and interprets sensory information and directs it to the cerebrum

27
Q

hippocampus

A

regualtes emotions and memory of emotions

28
Q

amygdala

A

responsible for our emotional response to everyday life
- can be effected by genetics (autism)

29
Q

nerves assosiated with PNS

A

somatic and auronomic nerves

30
Q

somatic nerves

A

controls skeletal muscles, bones and skin

31
Q

autonomic nerves

A

controls internal organs

32
Q

autonomic nervous system

A

Made up of two distinct units: sympathetic and parasympathetic

  • Sympathetic system prepares the body for stress
    Increase heart rate, release glucose, dilated pupils, increase blood flow
  • Parasympathetic system restore the bodies normal balance (negative feedback loop)
    Decreased heart rate, stores glucose, constricts pupils, decreases blood flow