Browse by system
Four body systems.
Hundreds of structures grouped by system - muscular, skeletal, nervous, and cardiovascular.
123 structures
Muscular system
Skeletal muscles and their attachments and actions.
36 structuresSkeletal system
Bones, their landmarks, and the joints between them.
139 structuresNervous system
Cranial and peripheral nerves, the brain and spinal cord, and their territories.
149 structuresCardiovascular system
The heart, and the arteries and veins and the regions they perfuse and drain.
73 structuresRespiratory system
The airway from larynx to alveolus, the lungs, and the pleura.
84 structuresDigestive system
The gut tube and its accessory organs, from the mouth to the anal canal.
44 structuresUrinary system
Kidneys, ureters, bladder, and urethra.
33 structuresEndocrine system
The hormone-secreting glands and where each one sits.
33 structuresLymphatic system
Lymph nodes, trunks and ducts, and the lymphoid organs.
69 structuresReproductive system
The male and female genital tracts and their supporting structures.