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Flashcards in 9- Brainstem Deck (25)
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1

Functions of Brainstem

Relay- long tracts between spinal cord and cortex

Attachment for cranial nerve

Integrative functions
- CV, respiratory, visceral/motor, reticular formation

2

Agnosia

Inability to recognize identify or some other property using a given sense

3

Apraxia

Patient unable to perform actions

Muscles are fine

Can perform them in a different context

4

Cerebellar Hypoplasia

Lukopenia viral injection in utero destroys Purkinje cells

Cerebellum is constantly growing in utero (virus attacks these cells)

Results in decreased inhibition from cerebellum = can't balance

5

Chorea

Dance
Rapid movements of face, tongue, limbs

6

Athetosis

Without position

Slow, writhing movement

7

Ballimus

Jumping about

Wild, flailing movements of 1 limb

8

Example of Hyperkinetic Disorder

Huntingtons

9

Characteristics of Hypokinetic Disroders

Rigidity

Slow and reduced movements

Stooped posture

Resting tremor

i.e. PD

10

Symptoms of PD

Bradykinesia

Hypertonia

Resting tremor

Akinesia (can't initiate movement

11

Cause of PD

Degeneration of DA neurons in Substantia nigra pars compacta

12

Specific Input (Thalamus)

Info from a specific nucleus that may continue on to cerebral cortex

13

Regulatory Input (Thalamus)

From PFC

Synapses onto entire thalamus

Helps determine if decision about whether info leaves a particular nucleus

14

HYP- Autonomic Control

Anterior pituitary- parasympathetic

Posterior- sympathetic

15

HYP - Temperature Regulation

Preoptic- has thermosensitive neurons, maintains core body temp

Posterior HYP- controls heat generating mechanisms

16

HYP- Thirst

SON/PVN- have osmoreceptors, also monitors angiotensin level

Angiotension= stimualtes ADH release

Increased thirst

17

HYP-Eating

Arcuate Nucleus- Integration point within HYP- sensitive to Glucose levels

Lateral nucleus- feeding centers

VMN- satiety center

18

HYP- Rage/Fear

Lateral and VMN

19

HYP- Sleep and Wake

Suprachiasmatic Nucleus

Circadian rhythms, sleep wake cycles

20

HYP-Stress

HPA axis

PVN secretes CRH----> ant pit

Anterior pit secretes ACTH, --> adrenal gland

Adrenal gland secretes glucocorticoid

21

Superior Longitudinal Fasiculas

Connects Occipital and Frontal lobes

22

Arcuate Fasciculus

Connect frontal and occipital lobe

23

Uncinate Fasiculus

Connects frontal and temporal lobe

24

Cingulum

Connects limbic system

25

Inferior longitudinal Fasiculus

Connects temporal and occipital lobe