The primary internal organs and tissue layers of the female reproductive system.

The nine primary internal and external organs and glands of the human male reproductive system.

The four physiological curvatures of the human spine in lateral profile, classified by developmental origin and curvature direction.

The lobes contain frontal, parietal, occipital, and temporal.

The major internal structural regions and features of an ovary in cross-section.

The nine major bones and regions of the human skeletal system from head to lower leg.

The primary reproductive and vegetative structures of an angiosperm flower in cross-section.

Internal structures and duct system of the human testis and epididymis.

The main anatomical components of a typical multipolar neuron from dendrites to axon terminals.