BISC 3166 Lecture Notes - Lecture 2: Pituitary Gland, Adrenocorticotropic Hormone, Prostaglandin
Document Summary
7. 2: in complex multi-cellular, multi-organ animals, the functions of different organ systems must be coordinated. This requires communication: communication among cells begins early in embryonic development. Two major communication systems (which are structurally and functionally inter-related): 1) nervous system, 2) endocrine system. Lecture 2 intro to the endocrine system: common characteristics of hormones: Cytokine monocytes: pheromone- chemical substance produced and released into the environment by an animal, affecting the behavior or physiology of others of its species. Chemical classes of hormones: gases, ex. nitric oxide (no) and carbon monoxide (co) are both produced enzymatically, no then diffuses into cells to activate cytosolic guanylyl cyclase . Arginine -------------> no + citrulline which converts gtp to cgmp: no acts in the cardiovascular system as a vasodilator. Ca2: long term effects- can alter transcription and gene expression, camp pka creb (camp response element binding protein) nuclear response element. Lecture 2 intro to the endocrine system: steroids: fig.
