15faweb.blackbaudondemand.com

10. To bend the elbow, the biceps muscle _____ and the triceps muscle_____. Section 4 The Skin. Circle what is true about the skin. The skin lets disease-causing microorganisms and harmful substances into the body. The skin keeps water from escaping from the body. The skin keeps heat inside the body. The skin gathers information about the ... ................
................