As the basis for careers in either medicine or nursing, human anatomy is one of the required building-blocks of your education. Make use of the following animations, videos, and multiple-choice practice tests to prepare for anatomy exams.
Terms of Movement
Terms of Location
Superficial Back Muscles
Deep back Muscles
Upper Arm Muscles
Anterolateral Abdominal Wall
Posterior Abdominal Wall
Spinal Cord (Grey Matter)
Common Fibular Nerve
Superficial Fibular Nerve
Deep Fibular Nerve
Nueral Arterial Supply
Neural Venous Drainage
Nose and Sinuses
Testes and Epididymis
Female Reproductive Tract
Fallopian (Uterine) Tubes
Head and Neck
Central Nervous System
The digestive system is made up of the alimentary canal (also called the digestive tract) and other organs, such as the liver and pancreas. The alimentary canal is the long tube of organs including the esophagus, stomach, and intestine. An adult's digestive tract is about 30 feet (about 9 meters) long.
As the teeth tear and chop the food, spit moistens it for easy swallowing. A digestive enzyme in saliva called amylase (pronounced: AH-meh-lace) starts to break down some of the carbohydrates (starches and sugars) in the food even before it leaves the mouth.
Swallowing, done by muscle movements in the tongue and mouth, moves the food into the throat, or pharynx (pronounced: FAIR-inks). The pharynx is a passageway for food and air. A soft flap of tissue called the epiglottis closes over the windpipe when we swallow to prevent choking.
From the throat, food travels down a muscular tube in the chest called the esophagus. Waves of muscle contractions called peristalsis force food down through the esophagus to the stomach. A person normally isn't aware of the movements of the esophagus, stomach, and intestine that take place as food passes through the digestive tract.
At the end of the esophagus, a muscular ring allows food to enter the stomach and then squeezes shut to keep food or fluid from flowing back up into the esophagus. The stomach muscles churn and mix the food with digestive juices that have acids and enzymes, breaking it into much smaller, digestible pieces. An acidic environment is needed for the digestion that takes place in the stomach.
By the time food is ready to leave the stomach, it has been processed into a thick liquid called chyme. A walnut-sized muscular valve at the outlet of the stomach called the pylorus keeps chyme in the stomach until it reaches the right consistency to pass into the small intestine. Chyme is then squirted down into the small intestine, where digestion of food continues so the body can absorb the nutrients into the bloodstream.
The inner wall of the small intestine is covered with millions of microscopic, finger-like projections called villi (pronounced: VIH-lie). The villi are the vehicles through which nutrients can be absorbed into the blood. The blood then brings these nutrients to the rest of the body. The small intestine is composed of three parts:
The liver (under the ribcage in the right upper part of the abdomen), the gallbladder (hidden just below the liver), and the pancreas (beneath the stomach) are not part of the alimentary canal, but these organs are essential to digestion.
The liver makes bile, which helps the body absorb fat. Bile is stored in the gallbladder until it is needed. The pancreas makes enzymes that help digest proteins, fats, and carbs. It also makes a substance that neutralizes stomach acid. These enzymes and bile travel through special pathways (called ducts) into the small intestine, where they help to break down food. The liver also helps process nutrients in the bloodstream.
From the small intestine, undigested food (and some water) travels to the large intestine through a muscular ring or valve that prevents food from returning to the small intestine.
Cardiology is a medical specialty and a branch of internal medicine concerned with disorders of the heart. It deals with the diagnosis and treatment of such conditions as congenital heart defects, coronary artery disease, electrophysiology, heart failure and valvular heart disease.
The kidneys are a pair of bean-shaped organs on either side of your spine, below your ribs. The kidneys' job is to filter blood, removing wastes, controlling fluid balance, and maintaining the right levels of electrolytes. All of the blood in your body passes through your kidneys several times a day.
Nervous system cells are called neurons. They have three distinct parts, including a cell body, axon, and dendrites. These parts help them to send and receive chemical and electrical signals.
Nephron, the functional unit of the kidney, is the structure that produces urine in the process of removing waste and filtering extraneous substances from the blood. There are about one million nephrons in each human kidney.
Certification of medical laboratory technologists and technicians is required for licensure in some states. The aging population is expected to lead to a greater need to diagnose medical conditions, such as cancer or type 2 diabetes, through laboratory procedures. Prenatal testing for various types of genetic conditions also is increasingly common. Medical laboratory technologists will be in demand to use and maintain the equipment needed for diagnosis and treatment.