27 Brain & Behavior IV Flashcards

1
Q

3 parts of the HINDBRAIN?

A

PMC
Pons
Medulla
Cerebellum

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2
Q

Functions of PONS

A
  • AROUSAL - awareness, consciousness
  • Relay station between cerebellum + cerebrum
  • Respiration
  • Sleep + dreaming
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3
Q

Functions of Medulla

A

Automatic “life-support”
=HR, BP, respiration rate
=REFLEXES (vomiting, defecating, swallowing)
=crawling/swimming in simple animals

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4
Q

Functions of cerebellum?

A
  • Prioperception
  • Posture/balance
  • Eye movements to compensate for HEAD movements
  • Receiving information from FRONTAL lobe
  • Sequencing precise movements
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5
Q

What happens to posture/balance upon cerebella DMG

A

Wide stance

Staggering gait

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6
Q

What types of INJURY can affect cerebellar function

A

Trauma
Disease
Alcohol

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7
Q

What happens to PRECISE movement upon cerebella DMG

A

TREMORS

Can’t do rapidly ALTERNATING movements

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8
Q

Function of MIDBRAIN

A
  • Receives BASIC auditory + visual stimuli
  • Species-specific behaviors - SEX + FIGHTING

= instinctive

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9
Q

3 layers of the meninges?

A

Dura
Arachnoid
Pia

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10
Q

The forebrain makes up what VOLUME of the brain?

A

80%

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11
Q

What distinguishes PRIMATES from other mammals

A

Large forebrain

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12
Q

How thick is the cortex?

A

2-3mm

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13
Q

How does the cortex/brain FIT INTO the skull

A

Convolutions

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14
Q

Names given to the different parts of a CONVOLUTION

A
Gyrus = ridge
Sulcus = groove
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15
Q

4 parts of the SUBcortical FOREBRAIN

A

Thalamus
Hypothalamus
Limbic system
Basal ganglia

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16
Q

Function of THALAMUS

A

Receive + simple analysis of SENSORY information

17
Q

Function of hypothalamus

A

HOMEOSTASIS

  • eating, drinking, body temp, sex
  • regulates AUTONOMIC nervous system
18
Q

Components of the LIMBIC system?

A

Hippocampus

Amygdala

19
Q

Damage to the limbic system causes what disorder

A

Capgras Syndrome
= belief that familiar people are IMOPSTERS
= disconnection between FUSIFORM gyrus + EMOTIONAL response

20
Q

Function of BASAL ganglia

A

SMOOTHING movement

21
Q

Damage to the basal ganglia can cause 5 disorders

A
PFTTC
Parkinson’s
Foreign Accent Syndrome
Tourettes
Tardive Dyskinesia
Cerebral Palsy
22
Q

Describe Parkinsons

A

Jerky movements

Loss of voluntary control

23
Q

Describe Tourettes

A

Uncontrolled (facial) muscle TWITCHES

24
Q

Describe Tardive Dyskinesia

A

DEC smoothing of movement

25
What causes cerebral palsy
HYPOXIA during birthing = movement disorders
26
Name the 4 lobes of the cortex
Occipital Parietal Temporal Frontal
27
What is a KEY area of the occipital lobe
Primary VISUAL cortex (V1) | Receives input from eyes via THALAMUS
28
What is a KEY area of the PARIETAL lobe
Primary SOMATOSENSORY cortex = POSTcentral gyrus * receives sensory info * CONTRALATERAL control
29
Explain what the HOMUNCULUS shows
SENSITIVE areas = LARGER cortex allocated
30
In what orientation is the homunculus mapped?
Upside-DOWN
31
What is a KEY area of the TEMPORAL lobe
Primary AUDITORY cortex
32
What is a KEY area of the FRONTAL lobe
Primary MOTOR cortex = PREcentral gyrus
33
Areas of the body are mapped to _________ aresa in the primary motor cortex
Brodmann’s areas
34
Function of PRIMARY areas
``` Basic INPUT (sensory) and OUTPUT (motor) = very SPECIFIC mapping ```
35
Function of ASSOCIATION areas
= higher functions | = COMPLEX pathways