PS101 Lecture Notes - Racial Hygiene, Inclusive Fitness, Genetic Drift
Document Summary
Biological bases of behaviour (continued) ps101 lecture october 12th, 2011. = glands that release hormones into the blood stream, in order to control bodily functioning. Hormones = chemical messengers some substances function as both neurotransmitters and hormones (ex - norepinephrine) Hormonal messages longer distances, slower speed (seconds and minutes), and less specific than neural messages. Neural messages short distances, very fast (milliseconds), along very specific pathways. Hormones: some are released in response to changing conditions in the body, in order to regulate them (ex - digestion by stomach and intestine hormones; kidney hormones regulate blood pressure) Pituitary gland master gland released several times a day in brief pulses (pulsatile) Hypothalamus nervous system control of endocrine system; has connections with the pituitary gland. Stress hypothalamus sends signals through the autonomic nervous system and through the pituitary gland (fight or flight situations)
