HHP 3500 Lecture Notes - Lecture 2: Circadian Rhythm, Acclimatization, Extracellular Fluid

• School: University of Iowa
• Department: Health and Human Physiology
• Course: HHP 3500
• Professor: Peterson Clayton

Document Summary

Adaptation-characteristic that favors survival in specific environments or conditions, occurs during persistent challenges to homeostasis (ex. Adaptations to handle increased body temperature); they are inherited, and evolved by specific species. As a species we live according to light dark cycles, and adjust variables (circadian rhythms, ex. This is trained and controlled by the hypothalamus, serves as pacemaker: 3. Balance of substances in the body gains to body: food, air, or synthesis in body. Distributed in storage deposits, and a pool in the extracellular fluid. Loss from body: metabolism/burning, excretion from body via lungs, gi, kidneys, skin, menstrual flow. Calcium (pool is in bones), glucose (stored as glycogen or fat), sodium (taken in through food, loss through sweat, feces, and urine. In order to maintain steady pool, gain and loss must be equal/stable; more gain than loss is positive balance. Protons-very dense; found within nucleus of atom; # determine atomic number, which determines element!