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Deanna Lopez
Physiology Weeks 1-6
| Term | Definition |
|---|---|
| Negative feedback | Inhibitory mechanisms in the body that negate or oppose a change by creating a response that is opposite in direction to the initial disturbance in order to return body to homeostasis |
| positive feedback | Stimulatory mechanisms in the body that tend to amplify or reinforce the change that is occurring, disrupts homeostasis, but goal is to return to homeostasis. |
| ATP | Adenosine Triphosphate. An important organice molecule because it is the form of energy used to do the work of muscle contraction, active transport, and biosynthesis. |
| Cellular respiration | process by which cells break down glucose, or a nutrient that has been converted to glucose or one of its simpler products, not carbon dioxide and water. |
| Transcription | Synthesis of any RNA molecule. Copies and transcribes a portion of the DNA code. |
| Osteogensis | Combined action of osteoblasts and osteoclasts sculpting bones into their adult shape |
| Periosteum | dense, white fibrous membrane that covers bone except at joint surfaces |
| articular cartilage | thin layer of hyaline cartilage that covers the articular or joint surfaces of epiphyses, cushions jolts and blows |
| Diffusion | natural phenomenon caused by the tendency of small particles to spread out evenly within any given space |
| Catalyst | A chemical that reduces the amount of activation energy needed to start a chemical reaction, participate in the chemical reaction but are not changed themselves by the reaction |
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