BIOL 1412 Lecture Notes - Testicle, Epiphyseal Plate, Ovulation

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1412
• Professor: Paul Messing

Document Summary

Triggers set of body changes called general adaptation syndrome. All co-ordinated directly or indirectly by the hypothal. phases: 1) phase 1: alarm rx (fight or flight response) Organs adrenal medulla (discussed previously) (prolongs fight/flight response) E + ne effects of sns + endocrine: a) blood glucose: E, ne converts glycogen to glucose (in liver) Hr, force of contraction b) respiratory rate c) blood flow to skin + abdominal viscera d) + card. muscle, + brain (o2 + glucose to working organs) e) digestion, urine production. Permits recovery from the effects of 1) (tissue repair, etc. ) or response to longer term stress (eg. starvation) Hypothalamic hormones initiate 2): growth hormone releasing hormone (ghrh) corticotropin releasing hormone (crh) Gh a) stim. s growth (protein production), cell reproduction. Cortisol a) released in 30 sec of a stress but response not for hours - steroid hormone - acts on nuclear receptors b) inhibits insulin release. Release of hormones causes: a) blood glucose: release &