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Intro to A&P Unit 1
| Question | Answer |
|---|---|
| Anatomy | The study of the body structure of animals. |
| Surface Anatomy | The study of anatomical landmarks that can be identified by observing the surface of the body. Sometimes called superficial anatomy. |
| Microscopic Anatomy | The study of minute anatomical structures on a microscopic scale, including cells (cytology) and tissues (histology). |
| Gross (or Macroscopic) Anatomy | The study of anatomical features visible to the naked eye, such as internal organs and external features. |
| Homeostasis | The ability of a system or living organism to adjust its internal environment to maintain a stable equilibrium, such as the ability of warm-blooded animals to maintain a constant body temperature. |
| Negative feedback | A feedback loop in which the output of a system reduces the activity that causes that output. |
| Positive feedback | A feedback loop in which the output of a system is increased by the mechanism’s own influence on the system that creates that output. |
| Atom | The smallest possible amount of matter which still retains its identity as a chemical element, consisting of a nucleus surrounded by electrons. |
| Proton | Positively charged subatomic particle forming part of the nucleus of an atom and determining the atomic number of an element. It weighs 1 amu. |
| Neutron | A subatomic particle forming part of the nucleus of an atom. It has no charge. It is equal in mass to a proton or it weighs 1 amu. |
| Eukaryotic | Having complex cells in which the genetic material is contained within membrane-bound nuclei. |
| cell | The basic unit of a living organism, consisting of a quantity of protoplasm surrounded by a cell membrane, which is able to synthesize proteins and replicate itself. |
| plasma membrane | The semipermeable barrier that surrounds the cytoplasm of a cell. |
| diffusion | The passive movement of a solute across a permeable membrane |
| concentration gradient | A concentration gradient is present when a membrane separates two different concentrations of molecules. |
| chromatin | a complex of DNA, RNA, and proteins within the cell nucleus out of which chromosomes condense during cell division |
| phospholipid | Any lipid consisting of a diglyceride combined with a phosphate group and a simple organic molecule such as choline or ethanolamine; they are important constituents of biological membranes |
| hypertonic | having a greater osmotic pressure than another |
| hypotonic | Having a lower osmotic pressure than another; a cell in this environment causes water to enter the cell, causing it to swell. |
| cytoskeleton | A cellular structure like a skeleton, contained within the cytoplasm. |
| epidermis | The outermost layer of the skin. |
| dermis | The middle layer of the skin. |
Created by:
anreese
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