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Flashcards in CNS Deck (18)
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1

what comprises the CNS?

brain, spinal cord

2

where does the CNS lie?

withing the skull and vertebral canal?

3

what are the 3 meninges and what do they do?

dura mater, arachnoid membrane, pia mater, they provide functional protection- physical and chemical

4

what are the segments of the spinal cord

cervical, thoracic, lumbar, sacral, coccyngeal

5

what is the difference between white and grey matter in the spinal cord?

grey contains neuron cell bodies and some axons, white contains nerve axons

6

where is the dorsal horn(grey matter) and what does it contain?

posterior part of spinal cord, first-order afferent neuron terminals, and contains cell bodies of 2nd order sensory neurons

7

where is the ventral horn and what does it contain?

in anterior part of spinal cord, cell bodies of motor neurons, axons of motor neurons leave cord via ventral nerve roots

8

what part of the spinal cord has more white matter?

cervical and thoracic regions

9

what part of the spinal cord has more grey matter?

sacral and lumbar regions

10

describe the reflex pathway

stimulus-> sensory neuron -> inter neuron -> motor neuron -> response

11

where does grey matter surround white matter?

the brain

12

what are the 3 regions of the brain?

forebrain (cerebrum & diencephalon) midbrain and hindbrain (pons, medulla & cerebellum)

13

what is the function of the midbrain?

visual & auditory reflexes, pain control

14

what is the function of the hindbrain?

vital centres- breathing, heart, b.v, etc. - medulla, control of balance and posture - cerebellum

15

what are the 2 components of the diencephalon?

thalamus and hypothalamus

16

what does the thalamus do?

sensory processing

17

what does the hypothalamus do?

homeostasis e.g thermoregulation, hormone production, pituitary gland & hormones, circadian rhythms, motivation, emotional responses.

18

what does the cerebrum do?

sensory and motor functions, language, memory, perceptions, sensory-motor integration, emotions.