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Flashcards in Gastrointestinal Physiology - Theoretical Questions Deck (127)
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121

DIT:
Cause? Percentage of TEE?

After a meal there is increased motility in the GI that leads to Heat.
15% of TEE

122

EE:
Cause? Percentage of TEE?

30% of TEE
Heat and External Work

123

What happens in Positive Energy balance?
and in Negative?

Positive - Energy of Body>TEE, supports weight gain.
Negative -Energy of Body

124

When does loss of weight is dangerous? What could be a reason?

40% loss - Immune and Cardiovascular Dysfunction
Anorexia - Psychiatric disorder

125

What are Beige Adipocytes?

Induced by cold and Adrenergic Gs stimulus.
Forms in adults and allow heat production (UCP)

126

What element of central nervous system allow for the changes in feeding? how?

Hypothalamus:
Satiety center and Feeding center. These receive input from integrator Arcuate nucleus: Orexinergic Neurons (Pro-feed) and Anorexigenic Neurons (Anti-Feed) which release POMC and Neuropeptide Y respectively.

127

What biological signals does the Arcuate Nucleus receives?

Anorexigenic Neuron stimulus : Leptin, Insulin, GLP, Peptide YY, CCK, CART
Orexinergic Neuron Stimulus: Orexin and Ghrelin