Look up an image:
Explore by theme
All the organs making up the human body are protected by the skin, which forms its outer covering. The skin is the largest organ of the body.
Male human being producing cells able to fertilize the ovum (egg); the male’s skeleton is generally larger and heavier than that of the female.
Human being of the female sex capable of conceiving children from an ovum (egg) fertilized by a spermatozoon (sperm, the reproductive male cell).