BSCI 202 Lecture Notes - Lecture 1: Blood Plasma, Extracellular Fluid, Cellular Respiration

• School: University of Maryland
• Department: Biological Sciences Program
• Course: BSCI 202
• Professor: Obrien

Document Summary

Air in lungs/food in gi tract/fluid in renal tubules not in body. Interrelationship to maintain homeostasis: must first enter blood stream to enter body. Cleanses interstitial fluid to protect from pathogens. Transports materials in body via blood pumped by heart: o2, co2, nutrients, wastes, hormones, ions. Keeps o2 in blood to fuel cellular respiration. Not required for homeostasis, but can have an affect. Plasma co2 (40 mmhg) and o2 (100 mmhg) Positive/negative feedback: positive increases response to fix problem (eg. labor, negative decreases response to fix problem (eg. sweating to cool down)