Medical Terminology For Dummies. Beverley Henderson

in both the standard English and medical worlds, though, is to learn how to pronounce phonetically, by breaking up the word into smaller parts.

       Building a Foundation of Vocabulary

      Getting the basics of word formation and pronunciation down pat is the hard part. Once you can do that, you can move on to building your word vocabulary. Even though medical professionals like to joke that terminology is like a foreign language (sometimes, yes), don’t throw this book out the window just yet. The good news is that you probably already know a lot of medical terms and you can use those to build up the rest of your newfound vocabulary.

      Remember your grade school days when you used all kinds of little tricks to remember things like multiplication tables and the state capitals? The same principle applies to new medical terms. You can make lists of word parts, list words by similar sound, map words, or memorize terms by body system. And those are just a few ideas. Do whatever works for you, even if it’s singing terms to the tune of “Sunrise, Sunset” in the shower. We promise not to tell.

       In Terms of Anatomy

      For our purposes in the land of medical terms, we can compare anatomy to the infrastructure of a building. The walls, floors, bricks, plaster, electrical system, plumbing, and so forth all help keep the building working for the people who inhabit it. Your body’s anatomy is no different, which is why you are going to read about these particular terms first. Once you get the basics of what holds your body together, you can go on to find out about the physiological systems that make your body react to both internal and external circumstances.

      First on our anatomy checklist is the skeletal system. This is your body’s frame, much like the frame of a building. This system, along with its joints, works together with the muscles to give you the support and movement you need every day. The bony skeleton provides the jointed framework for the body, giving it shape, protecting vital organs from external injury, and providing attachment points for muscles, ligaments, and tendons.

      Working together with the skeleton is the muscular system, in which several different major muscle groups work together. Made up of over 600 muscles and joints, this system is responsible for movement.

      Covering all this infrastructure is the integumentary system. Your skin, glands, nails, and hair work like the façade, or outside covering, of a building. They are the things people see when they look at you. The outside of your “building” often shows the world how healthy the rest of your body is. Healthy skin, along with accessory organs glands, hair, and nails, are the hallmarks of healthy insides, so care for them accordingly.

      Your sensory system is all the “fun stuff” in your building. The windows, amenities, sound system, and dining facility all bring aesthetic delight to the building’s inhabitants, and your senses work in a similar fashion.

      It may be hard to imagine that words can describe all the amazing things your anatomy can do, but believe us when we say that it’s all possible through terminology. And who knows? Perhaps there’s a word out there that hasn’t been created yet – until you came along.

       All Systems Go

      Once you get those basic working parts ingrained in your brain, you will move on to the physiology terminology. Physiology deals with the remaining body systems that help your fabulous body do its day-to-day work.

      First up is the thing that keeps your blood pumping and your life moving forward each day: your heart. More specifically, the cardiovascular system. Your heart does not work in a vacuum. It has supporting players, namely your blood cells and vessels. These parts all work together to supply your body with fresh, clean, oxygenated blood.

      Then there is the separate but complementary lymphatic system that works to flush your body of impurities. Most directly associated with immunity, the lymphatic system works in the same context as the cardiovascular system due to the similar makeup of the system and the fact that, once cleaned by the lymph nodes, lymphatic fluid is released directly into the bloodstream. Lymph vessels are arranged in a similar pattern as the blood vessels.

      Speaking of oxygenating your blood, think about how that oxygen finds its way into your body. You may not consciously think about it every day, but breathing makes it all possible. The body’s trillions of cells need oxygen and must get rid of carbon monoxide, and this exchange of gases is accomplished by the respiratory system. External respiration is the repetitive, unconscious exchange of air between the lungs and the external environment.

      You have to breathe, but you also have to eat, and eating is way more fun. Your good buddy the gastrointestinal system helps turn those tasty meals and treats into usable energy for your body. Also called the alimentary or digestive tract, this system provides a tubelike passage through a maze of organs and body cavities, beginning at the mouth, the food entrance into the body, and ending at the anus, where solid waste material exits the body and your delicious Chinese takeout magically turns into … well, you know.

      Moving on, the complicated endocrine system maintains the chemical balance of the body. It does this by sending chemical messengers called hormones throughout the body via the bloodstream. Hormones regulate and control activity of specific cells or organs. Slowly released hormones control organs from a distance. Endocrine glands are located in different parts of the body. They are said to be ductless, because they have no duct system to transport their secretions. Instead, hormones are released directly into the bloodstream to regulate a variety of functions of body organs. One can stimulate growth, another matures sex organs, and yet another controls metabolism. Your body has both central and peripheral glands.

      Even more complicated (are we having fun yet?) is the nervous system. Working like the body’s built-in computer system, it is far more complex than your laptop. Messages from the brain are relayed via the spinal cord through nerve fibers that provide connections for incoming and outgoing data. The body has more than ten billion nerve cells whose function is to coordinate activities of the body. This system controls our voluntary activities as well as involuntary activities. We speak, hear, taste, see, think, move muscles, and have glands that secrete hormones. We respond to pain, danger, temperature, and touch. We have memory, association, and discrimination. These functions are only a small part of what the nervous system controls.

      The nervous system is made up of the central nervous system (CNS), which includes the brain and spinal cord. The peripheral nervous system (PNS) is composed of cranial nerves (that extend from the brain) and spinal nerves (that extend from the spinal cord). The autonomic nervous system (ANS) controls and coordinates the functions of the body’s vital organs, such as heartbeat and rate of breathing – functions we don’t even think about.

       Down-Under Details

      Speaking of things you don’t usually think about, the urinary system is made up of the kidneys (two), ureters (also two), bladder, and urethra. This system’s main function is to remove urea (the nitrogenous waste products of metabolism) from the bloodstream, and excrete it in urine from the body.

      Urea is formed in the liver from ammonia. The bloodstream carries it (in the same manner as hormones and lymph) to the kidneys, where it passes with water, salts, and acids out of the bloodstream into the kidneys. The kidneys produce the urine that travels through each ureter into the bladder to be excreted via the urethra. Now that’s a whole lot of information to impress your friends with at a dinner party. On second thought, maybe not.

      When food and oxygen combine in cells to produce energy, the process is known as catabolism. In the process, food and oxygen are not destroyed, but small particles making up the food and oxygen are rearranged in a new combination, and the results are waste products. Waste in the form of gas (carbon dioxide) is removed from the body by exhaling through the lungs.

      Think about how you were made. No, you weren’t discovered under a cabbage leaf. Your mom and dad made you (see Sex For Dummies if you don’t get our drift here) using their reproductive systems. In the male, it has two main functions: to produce spermatozoa, the male reproductive cell, and to secrete testosterone, the male hormone. The reproductive organs, or gonads, are the testes. They are supported by accessory organs, ducts, glands, and supportive structures. The ducts include the epididymides (epididymis-singular)