Central Nervous System (CNS) Flashcards

1
Q

What is the brain and spinal cord covered by and what is its function?

A

meninges -to protect delicate tissue

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2
Q

What are the types of meninges?

A

dura mater, arachnoid mater, pia mater

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3
Q

What are the segments of the spinal cord?

A

cervical, thoracic, lumbar, sacrum, coccyx

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4
Q

What does the grey matter in the spinal cord mostly contain?

A

neurone cell bodies and some axons

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5
Q

What does the white matter in the spinal cord mostly contain?

A

axons

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6
Q

How to identify spinal white matter in a black and white photo?

A

on the outside and stains darker

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7
Q

Describe the dorsal/posterior region of the spinal cord

A

grey matter. location of 1st order afferent (to CNS) neurone terminals. location of cell bodies of 2nd order sensory neurone

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8
Q

Describe the ventral/anterior region of the spinal cord

A

contains the axons of motor neurons that extend into the periphery to control somatic and visceral effectors. contains cell bodies of motor neurones

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9
Q

Why does the top of the spinal cord have more white matter?

A

More nerves join white matter going up therefore in cervical and thoaracic, there is more white matter

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10
Q

What do motor neurones control?

A

muscles and glands

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11
Q

What is different in the arrangement of matter in the brain?

A

white matter is on the inside and grey matter surrounds it

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12
Q

What are the regions of the brain?

A

forebrain, midbrain, hindbrain

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13
Q

What does the forebrain contain?

A

cerebrum, diencephalon

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14
Q

What does the hindbrain contain?

A

pons, cerebellum, medulla oblongata

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15
Q

What is the brainstem composed of?

A

pons, medulla oblongata, midbrain

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16
Q

What does the cerebrum do?

A
  • Conscious thought processes, intellectual functions -language, perceptions
  • Memory storage and processing
  • Conscious and subconscious regulation of skeletal muscle contractions
17
Q

What does the diencephalon do?

A

Thalamus

  • Relays and processes sensory information

Hypothalamus

  • Controls emotions (stress), homeostasis (thermoregulation), circadian rhythm, motivation and hormone production (pituitary gland)
18
Q

What does the midbrain do?

A
  • Processes visual and auditory data
  • Generates reflex motor responses
  • Maintains consciousness
  • Pain control
19
Q

What does the pons do?

A
  • Relays sensory information to cerebellum and thalamus
  • Subconscious somatic (respiration) and visceral motor centers
20
Q

What does the medulla oblongata do?

A
  • Relays sensory information to thalamus and to other portions of the brainstem
  • Autonomic centre for regulation of visceral function (cardiovascular, respiratory, and digestive system activities
21
Q

What does the cerebellum do?

A
  • Coordinates complex somatic motor patterns
  • Adjusts output of other somatic motor centers in brain and spinal cord
  • Controls balance and posture
22
Q

What is grey matter in the brain called?

A

cerebral cortex

23
Q

What is white matter in the brain called?

A

corpus callosum

24
Q

Where is the brain stem located?

A

near the spinal cord

25
What does the brainstem control?
vital functions such as breathing, consciousness, blood pressure, heart rate, and sleep.
26
What cranial nerves does the pons house?
nuclei of trigeminal (5) abducens (6) facial (7) vestibulocochlear (8)
27
What cranial nerves does the midbrain house?
nuclei of trigeminal (5) oculomoter (3) trochlear (4)
28
What cranial nerves does the medulla house?
9, 10, 11, 12