Do now –  List the functions of the skeletal system (hint: there are 5 of them)  Answers  The skeleton gives shape and support to your body.  Bones protect your internal organs. For example, ribs surround the heart and lungs, and the skull encloses the brain.  Major muscles are attached to bone and help them move.  Blood cells are formed in the center of many bones in soft tissue called red marrow.  Major quantities of calcium and phosphorous compounds are stored in the skeleton for later use. Calcium and phosphorus make bones hard

Do now – Describe how shivering helps you maintain homeostasis (stable body temperature) on a cold day. 2. Describe how a muscle attaches to a bone

Answers 1. Increased contraction of muscles is the body’s response to cold. As the muscles contract, heat energy is released and maintains body temperature. 2. Thick bands of tissue called tendons attach muscles to bones.

 Name and give an example of a movable and immovable joint.

Answers Movable joint – base of skull, shoulder, hip Immovable Joint – skull, pelvis

Name a body function controlled by involuntary muscles. 1. Blood pumping through vessels 2. Food moving through digestive system 3. Breathing

List the major functions of skin  Protects  Regulates body temperature  Excretes wastes  Serves as sensory organ  Forms vitamin D