Part III Student Exploration: Muscles and Bones Day 3 Directions: Follow the instructions to go through the simulation. Respond to the questions and

prompts in the orange boxes.

Vocabulary: actin, biceps, cartilage, contract, extend, fast twitch fiber, flex, fulcrum, humerus, lever, ligament,

muscle fiber, myofibril, myosin, powerstroke, radius, sarcomere, skeletal muscles, slow twitch fiber, tendon,

triceps, ulna

Prior Knowledge Questions (Do these BEFORE using the Gizmo.)

1. When you lift a weight, what part of the arm is doing the most work?

2. How do you think your arm muscles cause your forearm bones to move?