Category Anatomy

The anatomy of the peripheral nervous system

The peripheral nervous system (PNS) is composed of spinal and cranial nerves, their associated ganglia (autonomic and sensory) and their ramifications that transmit afferent and efferent information between the central nervous system (CNS) and the rest of the body. It…

A proposed novel action of psoas minor

Psoas minor is a curious muscle in humans, lacking a clear and universally agreed function and reported to be present in only 33–65% of individuals ( , , , ). This commentary proposes a novel functional role for psoas minor,…

Ankle and foot

The ankle joint (talocrural joint) is a diarthrodial articulation involving the distal tibia and fibula and the body of the talus; it is the only example in the human body of a true mortise joint. The human foot is a…

Knee and leg

The knee is the largest synovial joint in the body. It consists of three functional compartments that collectively form a dynamic, specialized hinge joint. During gait, the knee is able to withstand impressive weight-bearing loads while conducting precision movements, providing…