L6 - Hypothalamic Energy Control Flashcards
1
Q
Experiment showed hypothalamus role in energy control
A
lesions in rodents
2
Q
Lesion of VMN
A
hyperphagia
3
Q
Aphagia
A
lack of eating
4
Q
Lesions of lateral hypothalamus
A
aphagia
5
Q
Adiposity signals
A
hormonal = insulin and leptin
6
Q
Insulin & leptin act on?
A
arcuate nucleus
7
Q
How do hormones reach the hypothalamus
A
through tanycytes
8
Q
key neurons in Arcuate nucleus are
A
antagonistic
9
Q
Neurons in Arcuate nucelus
A
NPY and POMC
10
Q
NPY
A
neuropeptide
11
Q
POMC
A
neurohormone
12
Q
NPY function
A
stimulates food intake reduces energy expenditure
13
Q
POMC function
A
reduce food intake
increase energy expenditure
14
Q
POMC neuron release
A
a-melanocyte stimulating hormone
15
Q
NPY inhibits
A
PVN
