PSY290H5 Study Guide - Final Guide: Endorphins, Adrenocorticotropic Hormone, Chemoreceptor
Document Summary
Differences: neural communication has a fixed destination, neural messages are rapid (ms) hormonal are slower, neural are all or none hormonal are graded in strength, differ in voluntary control. Similarities: both are stored and released by glands & neurons, they both activated second messengers after they bind to the receptors causing changes within the cell. 3 categories of hormones: protein hormones: made of strings of amino acids if it is short in length it is referred to as a peptide hormone (acth, fsh, Lh: amine hormones: simpler in structure and consist of one amino acid and are sometimes called monoamine hormones (adrenaline, steroid hormones: composed of 4 strings of carbon atoms that are interconnected. Synthesis of steroid hormones: gonadal (estrogen & testosterone, adrenal (cortisol) The pituitary: consists of 2 parts, anterior pituitary (adenohypophysis) & the posterior (neurohypophysis, completely separate in function, located under the hypothalamus it is connected to it by a thin tissue = pituitary stalk.
