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Articles & Books From Donna Rae Siegfried
Cheat Sheet / Updated 04-20-2022
The human body is a beautiful and efficient system well worth study. In order to study and talk about anatomy and physiology, you need to start from an agreed-upon view of the human body. Anatomical position for the human form is the figure standing upright, eyes looking forward, upper extremities at the sides of the body with palms turned out.
Biology Essentials For Dummies (9781119589587) was previously published as Biology Essentials For Dummies (9781118072677). While this version features a new Dummies cover and design, the content is the same as the prior release and should not be considered a new or updated product.Just the core concepts you need to score high in your biology courseBiology Essentials For Dummies focuses on just the core concepts you need to succeed in an introductory biology course.
Anatomy Essentials For Dummies (9781119590156) was previously published as Anatomy Essentials For Dummies (9781118184219). While this version features a new Dummies cover and design, the content is the same as the prior release and should not be considered a new or updated product.The core concepts you need to ace AnatomyPerfect for those just starting out or returning to Anatomy after some time away, Anatomy Essentials For Dummies focuses on core concepts taught (and tested on!
Article / Updated 04-23-2019
The polymerase chain reaction (PCR) is a process that can turn a single copy of a gene into more than a billion copies in just a few hours. It gives medical researchers the ability to make many copies of a gene whenever they want to genetically engineer something.
For years, the very structure of DNA made studying it rather challenging.
Article / Updated 06-14-2017
Anatomy and physiology are concerned with the level of the individual body, what scientists call the organism. However, you can't merely focus on the whole and ignore the role of the parts. The life processes of the organism are built and maintained at several physical levels, which biologists call levels of organization: the cellular level, the tissue level, the organ level, the organ system level, and the organism level (shown).
Article / Updated 06-14-2017
A watery environment is a requirement for a great proportion of your body's metabolic reactions (the rest need a lipid, or fatty, environment). The body contains a lot of water: in your blood, in your cells, in the spaces between your cells, in your digestive organs, here, there, and everywhere.Not pure water, though.
Article / Updated 06-14-2017
The anatomical regions (shown) compartmentalize the human body. Just like on a map, a region refers to a certain area. The body is divided into two major portions: axial and appendicular.The axial body runs right down the center (axis) and consists of everything except the limbs, meaning the head, neck, thorax (chest and back), abdomen, and pelvis.
Article / Updated 06-14-2017
Taxonomy is the science that seeks to classify and organize living things, expressed as a series of mutually exclusive categories. The highest (most inclusive) category is domain, of which there are three: Archea, Eubacteria, Eukaryota. Each of these domains is split into kingdoms, which are further divided until each individual organism is its own unique species.
Article / Updated 06-14-2017
Biology is a very special application of the laws of chemistry and physics. Biology follows and never violates the laws of the physical sciences, but this fact can sometimes be obscured in the complexity and other special characteristics of biological chemistry and physics.Following is a review of some of the principles of chemistry and physics that have special application in anatomy and physiology.
Article / Updated 06-14-2017
The 280 days, usually expressed as 40 weeks, are the human gestational period (length of pregnancy). This period is divided, again by convention, into three trimesters, though nothing specific marks the transition from one to the next.Officially, by convention, Day 1 of a pregnancy is the first day of the woman's previous menstrual period.