BIOSC-139 Lecture Notes - Lecture 2: Platelet, Endocrine System, Blood Sugar
26 Aug 2020
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Document Summary
Survival needs: appropriate amounts necessary for life, too little or too much harmful, nutrients, oxygen, water, normal body temperature, appropriate atmospheric pressure. Nutrients: chemicals for energy and cell building, carbohydrates, fats, proteins, minerals, vitamins. Oxygen: essential for energy release (atp production) Water: most abundant chemical in body, environment of chemical reactions, fluid base for secretions and excretions. Normal body temperature: 37 c, affects rate of chemical reactions, appropriate atmospheric pressure, for adequate breathing and gas exchange in lungs. Homeostasis: homeostasis, maintenance of relatively stable internal conditions despite continuous changes in environment, a dynamic state of equilibrium, maintained by contributions of all organ systems. Homeostatic control mechanisms: involve continuous monitoring and regulation of all factors that can change (variables, communication necessary for monitoring and regulation, functions of nervous and endocrine systems, nervous and endocrine systems accomplish communication via nerve impulses and hormones.
