This is a quiz please help

Four types of motile cells in human body?

Which of the following should be used to make a precise measurement of liquid volume

The integumentary system consists of the skin,hair,nails,glands,and nevers.its main function is to act as a battier to protect the body from the outside world and to maintain homeostasis.hair! how does your hair protect your body and maintain homeostasis? all but one answer applies