Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Physiology > CNS General > Flashcards

CNS General Flashcards

1
Q

Input to hypothalamus

A 
Amygdala
Hippocampus
Thalamus
Prefrontal cortex
Olfactory cortex
Tegmentum
Striatum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Output from hypothalamus

A 
Tegmentum
Thalamus
ANS
Brainstem centres
Hypophysis
Subthalamic body
Reticular formation
Limbic system
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Food intake hypothalamus

A

VMN(glucostats) - satiety centre - inhibits food intake
LN - Feeding centre - increases food intake

-increase in blood glucose activates VMN in post prandial state

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Peptides influencing food intake

A

Increasing

  1. Neuropeptide Y - by arcuate nucleus
  2. Orexin A and B - by lateral hypothalamus
  3. Ghrelin - stomach and hypothalamus

Decreasing

  1. MSH
  2. CRH
  3. ACTH
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Leptin

A
  • produced by adipose tissue
  • secretion proportional to size of fat depot
  • inhibits food intake
  • long term regulation
  • deficiency causes obesity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Gut peptide theory

A

CCK, glucagon, somatostatin, GRP secreted by gut inhibit food intake

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Thermostatic theory of food regulation

A

Fall in core temp. Increases appetite and vice versa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Regulation of body temp by hypothalamus

A

Preoptic nuclei
Anterior hypothalamus
Posterior hypothalamus

  • preoptic nuclei have temperature sensors that detect through blood flowing through hyp., And by cutaneous receptors on cortex
  • anterior hyp regulates in hot environment
  • posterior hyp regulates in cold environment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Regulation of thirst by hypothalamus

A

Lateral hypothalamus
Preoptic area

  • increased tonicity simulates osmoreceptors
  • decreased ECF volume simulates baroreceptors and angiotensin ii
  • angiotensin ii acts on subfornical organ
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Cardiovascular regulation of hypothalamus

A

Posterior and lateral hyp. - increase heart rate

Preoptic - decreases heart rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Functions of descending reticular formation

A
  1. Regulation of muscle tone, movements, posture
  2. Modulation of pain transmission
  3. Visceral function
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Functions of ascending reticular formation

A
  1. Alertness, sleep, wakefulness
  2. Appreciation and discrimination of sensations
  3. Genesis of EEG
  4. Learning and memory
  5. Neuroendocrine secretion
  6. Focusing attention on sensations
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Applied physiology for reticular formation

A
  1. Anasthetics block ARAS
  2. Amphetamines, adrenaline activate ARAS
  3. Damage to ARAS causes coma
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Modulation of pain by which pathways

A
  1. Serotonergic from raphae nucleus
  2. Dopaminergic from substantia Niagra
  3. Noradrenergic from locus ceruleus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Functions of limbic system

A
  1. Controls autonomic functions
  2. Feeding behaviour
  3. Memory and learning
  4. Emotional behaviour
  5. Sexual behaviour
  6. Olfaction
  7. Maternal behaviour
  8. Reward and punishment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Inhibit emotions

A

Cerebral cortex
VMN
Septal nuclei

Physiology (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions