BIOM 2000 Lecture : Unit 1-Essentials of Human Anatomy and Physiology.docx

• School: University of Guelph
• Department: Biomedical Sciences
• Course: BIOM 2000
• Professor: Tami Martino

Document Summary

Bodies ability to maintain relatively stable internal conditions even though the outside world is constantly changing. Dynamic system of equilibrium, vary within narrow limits. Every organ system plays a role in maintaining constancy of internal enviro. Communication within body is essential for homeostasis; accomplished by nervous and endocrine system, electric signals by nerves or blood borne hormones as information carriers. Receptor: type of sensor that monitors and responds to changes, stimuli, by sending information to control center: information flows from receptor to control center long afferent pathway. Control center (cc): determine level at which variable is to be maintained, analyzes info it receives and determines appropriate response. Inorganic compounds: lack carbon and tend to be small i. e. water, salt, acids, bases. Organic compounds: carbon containing compounds, fairly large covalently bonded molecules i. e. carbohydrates, lipids, proteins, nucleic acids. Absorbs and releases large amounts of heath before temp changes. Prevents sudden changes in body temp: polarity/solvent properties.