The blood flow in a healthy aorta compared to the blood flow in an aortic dissection. In a dissection, a tear in the inner layer of the vessel causes blood to flow between the layers and form a false lumen. Depicted here is a type A aortic dissection - a dissection occurring in the ascending aorta.

A sprained ankle occurs when you roll or twist your ankle, causing the ligaments around your ankle to become damaged. This illustration depicts some of the ligaments that can be torn in a severe ankle sprain, including the anterior tibiofibular ligament anterior talofibular ligament, and calcaneofibular ligament.

Cross section anatomy of the eye, including the optic nerve, fovea, sclera, choroid, retina, lens, zonular fibers, pupil, cornea, pars plicata, and pars plana.

Diagram showing the three component model of force transmission in muscles, including the parallel elastic component (PEC), series elastic component (SEC), and contractile component (CE). The contractile element is further made up of sarcomeres containing the microfilaments actin and myosin, while titin is an element of the series elastic component.

Compression in Long and Short Muscle Lengths

Diagram comparing the compression of the three component of force transmission in a biceps brachii muscle in long and short muscle length positions.

Diagram of the structure of DNA, including the major groove, minor groove, sugar phosphate backbone, and base pairs of adenine, thymine, guanine, and cytosine.

Illustration showing the anatomy of a sagittal section of the cervical spine.

Illustration depicting the anatomy a pair of kidneys, including the ureter, and a cross-section showing the renal pelvis, renal cortex, renal medulla, major calyx, and minor calyx.

Illustration detailing the major regions of the brain, including the frontal lobe, parietal lobe, temporal lobe, occipital lobe, and cerebellum.

Anatomy of the blood supply to the stomach and duodenum, originating from the celiac trunk and abdominal aorta. Branches include the left gastric artery, esophageal branch, splenic artery, short gastric arteries, left gastro-omental artery, common hepatic artery, hepatic artery proper, right gastric artery, gastroduodenal artery, right gastro-omental artery, and the superior mesenteric artery.

Illustration depicting the anterior anatomy of the glenohumeral joint, including the humerus, clavicle, scapula, coracoacromial ligament, acromioclavicular ligament, coracoclavicular ligament, trapezoid ligament, and conoid ligament.

Editorial illustration depicting eczema of the foot. This illustration originally accompanied a writer’s description of life with this condition, published in Esopus Magazine.

Published as a cover illustration for the Northwestern Public Health Review, accompanying Dr. Bronwyn Rae's article on the typhoid outbreak in Chicago leading up to the Columbian Exposition

Line illustrations showing the structure of several common surgical instruments, including a retractor, hemostat, and a gloved hand with scissors.

Illustration showing the anatomy of the anterior heart, including the aorta, vena cava, pulmonary vessels, and coronary vessels.

Cross section of the heart with arrows showing the path that blood flows through the vena cava, right atrium, right ventricle, pulmonary artery, left atrium, left ventricle, and aorta.