________ are short, hairlike projections found on the outer surface of specific cells

Mast cells are:

A) acquired through a complex immune system. B) basophils that migrate into the tissues. C) signaled by chemical messengers to travel to areas where they are needed. D) monocytes that have migrated into the tissues.

Lydia works exclusively inputting data into medical records. She seldom takes a break from inputting and works 4 days per week, 10 hours each day. While driving, she notices a change in her distance vision. Which of the following should she do to help ease eye strain while working?

A. Regularly focus on distant objects. B. Frequently rotate her neck and shoulders. C. Place her hands and wrists in horizontal alignment. D. Place source documents flat beside her computer.