PSYC 110 Lecture 7: Hormones Ch 6
1 Dec 2016
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Document Summary
Travel through bloodstream to act on targets: neurotransmitters. Travel across synaptic cleft to act on other neurons: hormones perform functions over a larger spatial and temporal scale than neurotransmitters. Hierarchical control of hormones: hypothalamus: produces neurohormones to stimulate the, pituitary gland: secretes releasing hormones to in uence, endocrine glands: release appropriate hormones into the blood to act on target organs and tissues (signal comes from the brain) Varied effects of hormones: brain and body are organized by exposure to hormones early in life. Presence of androgens necessary to masculinize in utero: hormones activate certain behaviors later in life. Ex) hormonal changes during ovulation lead to lordosis in female rats. Hypothalamus > endocrine cells > target cells > biological response > (back to hypothalamus again to shut off) Glucocorticoids and stress: stressor: a stimulus that challenges the body"s homeostasis and triggers arousal, stress response. Physiological and behavioral arousal/change; any attempt to reduce the stress.
