PLN 103 Lecture Notes - Lecture 1: Lipid Bilayer, Spindle Apparatus, Intermediate Filament
13 Dec 2016
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Document Summary
Physiology: functions of anatomical structures (cells, organs, systemic, pathological functions) Stable internal environment and how everything in the body contributes (failure results in illness or death) Homeostatic regulation: how the body adjusts to maintain homeostasis. Some homeostatic responses include: hormones, neurotransmitters and paracrine agents (local) Control of homeostasis: stimulus changes the environment, receptor sensitive to the change, control center processes the info and sends out the command, effector responds to command to fix change. Aims to minimize change and keep in normal range. Example: exercising in heat, fever, increased blood pressure: positive feedback. Initial stimulus produces an exaggerated or enhanced response to the change. Happens when a potentially dangerous or stressful process must happen quickly. Element: component that makes up matter (anything that occupies spass and has mass) Cells are the building blocks of plants and animals that performs specialized functions. Two types sex cells and somatic cells. It contains lipids (phospholipid bilayer), carbohydrates, and proteins.
