Medical Illustration

Illustration of a man with Parkinson's disease. Parkinson's is a degenerative disorder of the central nervous system. It effects a person's motor skills early on, and later in the disease thinking and behavioral problems may also arise. The four major motor symptoms are: tremor, rigidity, slowness of movement, and postural instability.

Illustration depicting a man with atherosclerosis, the limitation of blood flow through the artery due to plaque blockage (inset right). For comparison a normal artery is also shown in the inset (left).

Anatomy of Digestive System. Illustration.

Illustration of the structure of a chromosome and its location in the cell nucleus. Chromosomes are composed of DNA (deoxyribonucleic acid) in the shape of a double helix. At the ends of chromosomes are telomeres that protect the genetic material and play a role in cell aging.

Sinus anatomy, illustration.

Illustration showing some of the symptoms of Chronic Obstructive Pulmonary Disease (COPD): damaged alveoli (emphysema) and inflamed, mucus-clogged bronchi (bronchitis).

Illustration showing the relative sizes of a red blood cell (left), bacteria (purple, bottom) and various viruses.

Diagram describing the different stages of a bed sore and locations of where it forms on the body. Stage 1, inflamed skin. May be hard and warm to the touch. Stage 2, Sore extends into, but not through, skin layers, skin is broken. Stage 3, Skin layers are lost. Necrosis extends into subcutaneous tissue but not into fascia. Stage 4, Necrosis extends through fascia into structures such as bone and muscle. Pressure sores can form on the back of the head, ears, shoulders, elbows, buttocks, hips, thighs, legs, and heels.

As sea levels rise due to climate change, sea water will intrude into local drinking water aquifers, decreasing the amount of available potable ground water.

A dropsonde is an expendable weather reconnaissance device created by the National Center for Atmospheric Research (NCAR), designed to be dropped from an aircraft at altitude over water to measure (and therefore track) storm conditions as the device falls to the surface.

An anatomical illustration of the female breast.

Egg, larva, nymph and adult black-legged tick. Engorged tick and showing potential blood meals: rodent, dog, humans and deer. Bulls eye rash on the leg and bacteria.

Illustration showing pain caused by kidney stones.