3D medical illustration of the human lymphatic system shown in a male figure.

Illustration showing an artist's concept of a stylized neuron cell body showing the afferent terminals.

Illustration of the heart showing the coronary arteries and veins, anterior view.

Illustration of the heart showing the pattern of blood flow through the heart chambers to the lungs, anterior cutaway view.

Illustration of the heart showing the interior structures, anterior cutaway view.

Illustration of the thoracic arteries and veins and their relationship to the ribs.

Illustration comparing the walls of a vein (left) with the walls of an artery (right).

Illustration showing the exocrine glands (duct glands) of the eyelid, sagittal section, with a detail of the glands of Manz.

Illustration of the bones of the thoracic cage with intervening intercostal muscles.

Illustration of the basal ganglia: its location within the brain (top), a lateral view (center), an anterior medial view (bottom left), and a posterior medial view (bottom right).

Illustration showing the bones and fossae of the cranial base.

Illustration showing the foramina of the cranial base.

Illustration of the cerebellum: superior view (A), and inferior view (B); showing the vermis (1), and hemispheres (2).

Illustration showing the lobes of the cerebrum: lateral view (A), medial view (B).

Illustration showing the surface of the brain stem, posterior view.

Illustration of the brain, midsagittal section.

Illustration showing the hippocampus situated within the ventral aspect of the cerebral hemisphere, cutaway view.

Illustration of the brain showing the main convolutions of the cerebrum (the gyri and sulci).

Illustration of the brain, showing a cutaway view of the insula (insular cortex) deep within the lateral sulcus.

Illustration showing the surface of the brain stem, anterior view.