#Proud

The Skeletal System

Unit Objectives Identify the functions of the skeletal system. Label main bones in the human body. Name and identify the different types of bones. Understand the division of the skeleton and the corresponding groups of bones. Take a deeper look into various bone topics including joints, broken bones, types of bone, and key terms associated with bones. Understand the importance of bone health.

What are the functions of the skeleton system? 1. Support- bones form the body’s supporting framework. 2. Protect- bones provide protection for delicate structures, including vital organs in the body. 3. Movement- muscles are anchored firmly to bones and as muscles contract and shorten they pull on bones and thereby move them. 4. Storage- minerals and fat are stored in bone (mainly calcium and phosphate) 5. Blood cell formation- red bone marrow (soft connective tissue inside the hard walls of some bones) produces blood cells; a process called hemopoiesis

What is the skeleton and what is its purpose? The human skeleton is an internal framework that, in adults, consists of 206 bones. In addition to bones, the skeleton also consists of cartilage and ligaments: Cartilage is a type of dense connective tissue, made of tough protein fibers, that provides a smooth surface for the movement of bones at joints. Ligaments are bands of fibrous connective tissue that holds bones together and keeps them in place.

Types of Bones: 1. Long 2. Short 3. Flat 4. Irregular 5. Sesamoid Bone

The Main Bones in the Skeletal System

Divisions of the Skeleton The Axial Skeleton The Appendicular Skeleton Consists of the following 80 bones: • Skull: 22 bones • Hyoid: 1 bone • Vertebral Column: 32 bones • Rib Cage: 24 bones • Sternum: 1 bone Consists of 126 bones including: • Shoulder girdle: 4 bones • Arms and forearms: 6 bones • Wrists and hands: 54 bones • Pelvic Girdle: 2 bones • Thighs and legs: 8 bones • Ankles and feet: 52

Webquest time… You are going to be provided with a worksheet to complete. Should we make it a race?

Diseases/ Conditions that affect the Skeletal System Each student was given a disease or condition to research. Fill in the sheet and provided. We will discuss…