👉 Plastrums are the outer layer of a human penis. They are made up of skin, muscle, and blood vessels that cover the head of the penis. The plastrum is responsible for producing semen from an ejaculation.
👉 Plastrum is a term used in medicine, specifically in the field of otolaryngology (ear and nose) and otoscopic medicine. It refers to the inner lining of the ear, also known as the stapes bone or the tympanic membrane. In the context of otological disorders, plastrum can refer to both the outer layer of the tympanum and the inner part of the tympanic membrane itself.