Appetite Regulation Flashcards
What is leptin
A protein which is released from adipose tissue which tells the brain how much energy is stored in the adipose tissue and how much food is needed
What are set-points
Neuro-humoral regulation. Provide negative feedback and monitor energy. leptin is a critical regulator
What are episodic signals
Short term regulators. Ghrelin (hunger hormone). Integrated via blood and nervous system. Via hypothalamus
What is satiety
satisfaction between meals
What does PYY do
It is released from L cells in distal intestine and colon. Inhibits gastric emptying ‘ileal break’. supresses appeptite
What does GLP-1 do
increases insulin secretion, decreases appetite and decreases glucagon secretion
Name 5 non-homeostatic influences on appetite
time, availability, boredom, social, pleasure
What affect does low intensity exercise have on exercise
none
what affect does >60% VO2 exercise have on appetite
suppresses appetite for 30-60 minutes, delays voluntary request for a meal
How does ghrelin stimulate feeding
via arcuate nucleus neurons
