Slow dancin'
The futures so bright I gotta wear shades.
Nictitating membrane closed.
Nictitating membranes are found in birds, reptiles, amphibians, fish, but are less common in mammals, mainly being present in monotremes and marsupials. In humans, the plica semilunaris and its associated muscles are thought to be the vestigial remnants of the nictitating membrane and its muscles. Charles Darwin reported that the plica semilunaris is slightly larger in Africans and Australian Aborigines than in other peoples. Only one species of primate, the Calabar angwantibo, is known to have a functioning nictitating membrane.
The futures so bright I gotta wear shades.
Nictitating membrane closed.
Nictitating membranes are found in birds, reptiles, amphibians, fish, but are less common in mammals, mainly being present in monotremes and marsupials. In humans, the plica semilunaris and its associated muscles are thought to be the vestigial remnants of the nictitating membrane and its muscles. Charles Darwin reported that the plica semilunaris is slightly larger in Africans and Australian Aborigines than in other peoples. Only one species of primate, the Calabar angwantibo, is known to have a functioning nictitating membrane.