Which pigment secreted by specialized cells in the skin is capable of absorbing ultraviolet light and protecting against DNA damage?

 Dense elastic connective tissue forms

A group of cells that work together to perform a particular function is a(n)    

The term for the back of the head:  

Which organ system transports gases, nutrients and wastes?  

___________muscle pumps blood through the body and ________is located in the wall of blood vessels ?  

Which of the following layers of the epidermis is made up of dead cells containing mature keratin?  

Which epithelium is found lining the vagina?

Select the appropriate directional term to complete this sentence: The brachial region is  ________ to the antecubital region.  

What other organelle besides the nucleus contains DNA?