Presentation is loading. Please wait.

Presentation is loading. Please wait.

Lesson Overview Lesson Overview The Skeletal System Lesson Overview Lesson Overview The Skeletal System Objectives 32.1 The Skeletal System -List the structures.

Similar presentations


Presentation on theme: "Lesson Overview Lesson Overview The Skeletal System Lesson Overview Lesson Overview The Skeletal System Objectives 32.1 The Skeletal System -List the structures."— Presentation transcript:

1 Lesson Overview Lesson Overview The Skeletal System Lesson Overview Lesson Overview The Skeletal System Objectives 32.1 The Skeletal System -List the structures and functions of the skeletal system. -Describe the structure of a typical bone. -List the different kinds of joints and describe the range of motion of each.

2 Lesson Overview Lesson Overview The Skeletal System The Skeleton The skeleton supports the body, protects internal organs, assists movement, stores minerals and is a site of blood cell formation. There are 206 bones in the adult human skeleton.

3 Lesson Overview Lesson Overview The Skeletal System 2 divisions of the Skeletal System include: 1.Axial Skeleton 2.Appendicular Skeleton.

4 Lesson Overview Lesson Overview The Skeletal System Axial Skeleton The axial skeleton consists of the skull, the vertebral column and the rib cage.

5 Lesson Overview Lesson Overview The Skeletal System Appendicular Skeleton The bones of the arms and legs, pelvic and shoulder girdle form the appendicular skeleton.

6 Lesson Overview Lesson Overview The Skeletal System Bones Most of the mass of bone is mineral salts—mainly calcium and phosphorus. However, bones are living tissue.

7 Lesson Overview Lesson Overview The Skeletal System Structure of Bones The bone is surrounded by a tough layer of connective tissue called periosteum.

8 Lesson Overview Lesson Overview The Skeletal System Structure of Bones Beneath the periosteum is a thick layer of compact bone.

9 Lesson Overview Lesson Overview The Skeletal System Structure of Bones Nerves and blood vessels run through compact bone in channels called Haversian canals.

10 Lesson Overview Lesson Overview The Skeletal System Structure of Bones A less dense tissue known as spongy bone may be found under the outer layer of compact bone.

11 Lesson Overview Lesson Overview The Skeletal System Bone Marrow There are two types of bone marrow yellow marrow and red marrow. 1. Yellow Marrow – fat storage 2. Red Marrow – blood cell formation

12 Lesson Overview Lesson Overview The Skeletal System Development of Bones The skeleton of a human embryo is composed almost entirely of a type of connective tissue called cartilage. Cartilage is gradually replaced by bone during the process of bone formation called ossification.

13 Lesson Overview Lesson Overview The Skeletal System Development of Bones Bone tissue forms using cells called osteoblasts. Mature bone contains osteocytes, which help to maintain and strengthen the bone tissue.

14 Lesson Overview Lesson Overview The Skeletal System Joints A place where one or more bones meet another bone is called a joint.

15 Lesson Overview Lesson Overview The Skeletal System Types of Joints Depending on its range of movement, a joint is classified as immovable, slightly movable or freely movable. 1.Immovable joints allow no movement. 2.Slightly movable joints permit a small amount of movement. 3.Freely movable joints permit movement in two or more directions.

16 Lesson Overview Lesson Overview The Skeletal System Ligaments Bones are held together at a joint by ligaments.


Download ppt "Lesson Overview Lesson Overview The Skeletal System Lesson Overview Lesson Overview The Skeletal System Objectives 32.1 The Skeletal System -List the structures."

Similar presentations


Ads by Google