The male genital system consists of both external and internal parts. The external male genitalia include the penis, urethra, and scrotum. The internal male genitalia include the seminal vesicle, ...

If we look across the whole of the mammal branch of the tree of life, we find there are many groups of mammals that have ...

Male body types are often divided into mesomorph, ectomorph, and endomorph. These types are determined by factors like limb proportions, body weight, height, and body fat distribution. Male bodies ...

Whether it's our bloodstream, brain, or lungs, microscopic fragments of plastic seem to turn up every time scientists scour a new corner of the human body. The male reproductive organs are no ...

New research suggests that long-standing assumptions about sex and gender continue to shape how studies are designed, interpreted, and reported.