Sperm Receptacles ● ❲LATEST❳

Most female mammals (including humans) have distinct, long-term sperm receptacles. Instead, sperm are temporarily held in the cervical crypts and oviductal isthmus for up to ~5 days. True, specialized "sperm receptacles" are not a standard feature in eutherian mammals.

: Often designed to be kept near body temperature during transport to prevent "cold shock" which kills sperm cells. 2. Cryopreservation Straws sperm receptacles