The presence of an epiphyseal plate indicates that _____.

Where are blood cells manufactured in adults?  

Hair color is determined by the amount of keratin protein produced during keratinization.

Melanocytes are found in the:  

The human integumentary system includes:

The skin:

When body temperature rises above normal, blood vessels are likely to constrict.

The main function of melanocytes is to:

The shaft of a hair is composed of:  

An organ contains: