BIOL 1F25 Lecture Notes - Lecture 2: Human Musculoskeletal System, Natural Selection, Neuroglia

• School: Brock University
• Department: Biological Sciences
• Course: BIOL 1F25
• Professor: Joffre Mercier

Document Summary

Dr. joffre mercier: room mcc f212 ext. Key learning outcomes: homeostasis-a constant internal environment, metabolism- all chemical reactions that occur in cells, development, adaptation. Understanding the levels of organizations of life: living organisms require materials and energy, energy makes us able to do work, metabolism- al chemical reactions that occur in cells. Perform functions: plants require nutrients and use energy from the sun, humans and other animals need materials and energy through eating, food provides nutrients, used for building blocks and energy. Body"s organ systems maintain homeostasis: body temperature is maintained within narrow range, 36. 8-38 degrees = body temperature, blood acidity is maintained within narrow range, 7. 4 ph. Salts, wastes, sugars, etc. maintained within tolerable range: exercising, body temperature goes up, sweating occurs which cools you down, increases evaporation to maintain temperature, blood becomes more acidic. Lactic acid- acid which increases the hydrogen in blood: maintaining ph level, high temperature causes cells to die.