BIO1022 Study Guide - Final Guide: Secondary Sex Characteristic, Posterior Pituitary, Neurohormone
Document Summary
Co(cid:373)prises all of a(cid:374) a(cid:374)i(cid:373)al(cid:859)s hor(cid:373)o(cid:374)e-secreting cells. Coordinates slower, long-lasting responses to stimuli in comparison to the nervous system. Regulates long-term developmental processes: growth, development of primary and secondary sexual characteristics. Endocrine glands secrete hormones directly into extracellular fluid, from which they diffuse into the blood. Receptors detect a stimulus, and sends information to a control centre. After comparing information to a target set point, the control centre sends out a signal directing an effector to respond. Stimulus triggers receptors on an endocrine cell. Endocrine cell is triggered to release hormone into bloodstream. Neurohormone acts upon target effectors, causing the response. Stimulus is conveyed to the hypothalamus/posterior pituitary gland via a sensory neuron. Neurosecretory cells in posterior pituitary secrete neurohormone into bloodstream. Neurohormone binds to receptors on endocrine cell. Endocrine cell is triggered to release hormone into the bloodstream. Hormone acts upon target effectors, causing the response. Connect the response to the initial stimulus.
