10 - Primal Human Drives Flashcards
Where are hunger singals sent to from out mouths, fat cells, and intestines?
Hypothalamus
Which three areas of the hypothalamus are involved in hunger?
Arcuate nucleus, paraventricular hypothalamus, and lateral hypothalamus
Which part of the hypothalamus increases or decreases appetite?
The paraventricular hypothalamus receives signals from the arcuate nucleus and increases or decreases appetite accordingly, and acts on the lateral hypothalamus to release insulin
What is the difference between osmotic thirst and hypovolemic thirst?
Osmotic thirst follows eating salty foods, hypovolemic thirst follows loss of fluids
What did Krause (2011) find with rats with strong osmotic thirst?
Curiously, rats with strong osmotic thirst showed decreased anxiety and responses to stress, and increased attempts at social interactions with unfamiliar rats
Organum Vasculosum Laminae Terminalis (OVLT) and subfornical organ (SFO) are receptors in the brain for what?
Osmotic pressure
During hypovolemic thirst, which neurotransmitter is released around the brain causing cravings for salt and water?
Angiotensin II
Does hypovolemic thirst also use the OVLT and SFO receptors in the brain?
ONLY THE SFO
Which two hormones does the pituitary gland release the prompt the growth of an egg?
FSH and LH
In males, sex hormones bind to receptors in which three areas of the hypothalamus?
Ventromedial nucleus, medial preoptic area and the anterior hypothalamus
Testosterone acts on what to release dopamine?
Testosterone acts on the MPOA to release dopamine
What are the four stages of sex in order
Desire, Plateau, Orgasm, and resolution
What happens to the amygdala and hippocampus during plateau?
Activity in the amygdala increases while the hippocampus decreases
Which two neurotransmitters are released at orgasm?
Oxytocin and dopamine
