Recent Changes

{EL BOEN.jpg}
By Wil and Clintin
Lesson 13-6
What is the muscular system?
Objective: Describe how muscles work.
There are muscles that bend or flex your knee joint. These are called flexors.
There's other muscles that straighten or extend your knee joint. These are called extensors.
of two.
The muscles in your arm are examples of the teamwork.
Exercise is important to keep your muscles strong and healthy.
{Bicep_y_tricep.png}
By:By: Samuel and Jacob
13-7
What are the kinds of muscles?
Key Terms
Striated muscle: muscle tissue with stripes, or dark bands
Skeletal muscle: muscle attached to the skeleton that makes movement possible
Smooth muscle: muscle that cause movements which you cannot control
Cardiac muscle: type of muscle found only in the heart and major blood vessels
Objectives
Name three kinds of muscle and identify where they are located in the body
Summary
There are 3 different kinds of muscles in the body. They are called Straited muscles, Skeletal muscle, Smooth muscle, and Cardiac muscle. Each kind of muscle tissue has a different job. For example the smooth muscle has movement you can't control. For this reason smooth muscle is sometimes called involuntary muscle for example after you eat you cannot stop the muscles lining your stomach from moving to help digest the food. The cardiac muscle is found only in the heart and major blood vessels.
{http://stevegallik.org/sites/histologyolm.stevegallik.org/images/cardiacmuscle.jpg}
By: Anna, Lucas

Extensor: muscle that strengthens a joint.
{http://t0.gstatic.com/images?q=tbn:ANd9GcRoh8mobTAxesh64s2Jb78DRFG59dBcIVt19WcQ5EzHdSiGW_aJRg} {http://4.bp.blogspot.com/_QMD3uDrxxgM/TMhdEHi1zbI/AAAAAAAAJz0/QlnWlkh93Ug/s1600/activity_pyramid.jpg}
Main Ideas
600 muscles make up the muscle system.
move the
body.
Muscles only move bones when the muscle contracts. They don't push bones.
There are muscles that bend or flex your knee joint. These are called flexors.
There's other muscles that straighten or extend your knee joint. These are called extensors.
Most muscles work in teams of two.
The muscles in your arm are examples of the teamwork.
Exercise is important to keep your muscles strong and healthy.
{Bicep_y_tricep.png}
By: Samuel and Jacob

Flexor: muscle that bends a joint
Extensor: muscle that strengthens a joint.
{http://media-1.web.britannica.com/eb-media/20/55620-004-0B8EF544.jpg} The Muscle System
{http://fitsit360.com/wp-content/uploads/2011/08/Activity-Pyramid.jpg} {http://t0.gstatic.com/images?q=tbn:ANd9GcRoh8mobTAxesh64s2Jb78DRFG59dBcIVt19WcQ5EzHdSiGW_aJRg} {http://4.bp.blogspot.com/_QMD3uDrxxgM/TMhdEHi1zbI/AAAAAAAAJz0/QlnWlkh93Ug/s1600/activity_pyramid.jpg}
600 muscles make up the muscle system.
Without muscles, bones can't move the

{EL BOEN.jpg}
By Wil and Clintin
Lesson 13-6
What is the muscular system?
Objective: Describe how muscles work.
Key Terms:
Flexor: muscle that bends a joint
Extensor: muscle that strengthens a joint.
{http://media-1.web.britannica.com/eb-media/20/55620-004-0B8EF544.jpg} The Muscle System
{http://fitsit360.com/wp-content/uploads/2011/08/Activity-Pyramid.jpg}

Adults have 206 bones in their body. long bones are yellow. injuries to bones are quite common. close fractures do not break skin.
{http://www.teachpe.com/images/anatomy/bone_structure.jpg} by Logan and Zoe
How do joints work?
Lesson 13-4Lesson 13-5
How Do Joints Work?
Key terms: Joint: place where two or more bones meet.
Summary: The place where two bones or more meet is called a joint. Some bones are connected directly to other bones at the joint. However, most bones are held together by ligaments.

marrow: soft tissue inside bones that produces blood cells
fracture: crack or break in a bone
Main idea-
Adults
Adults have 206 break skin.
{http://www.teachpe.com/images/anatomy/bone_structure.jpg} by Logan and Zoe
How do joints work?
Lesson 13-4
Key terms: Joint: place where two or more bones meet.
Summary: The place where two bones or more meet is called a joint. Some bones are connected directly to other bones at the joint. However, most bones are held together by ligaments.
There are four main kinds of joints in the body. Joints can move in any direction.
The four major joints are… Ball and socket joints, gliding joints, hinge joints, and the pivotal joints.
Cartilage is found in the joints of many bones.
Movable joints such as knee, shoulder, and hip all have cartilage between the bones. This layer of cartilage cushions the bones and prevents it from rubbing against another bone. Cartilage is smoother than bone so it causes less friction when rubbed together. This allows for easier movement of the bones. Cartilage is also found between the bones of the spinal column. The cartilage there acts as shock-absorbing padding for the vertebrae.
{EL BOEN.jpg}
By Wil and Clintin

Last but not least there is bone formation. Cartilage is replaced by living bone tissue. There are a couple of cells that help in this process. One makes up most of the bone. Another breaks down the bone during the remodeling and growth of the bones. It does seem a little weird but it makes sense because the shape and size of bones change over time.
{http://www.teachpe.com/images/anatomy/skeleton.jpg}
Lesson 13-4 What are bones?
OBJECTIVE: Describe the parts of a bone.
Periosteum: thin membrane that covers a bone
Compact bone: mostly solid, dense part of a bone
spongy bone: part of a bone with many small pores or spaces
marrow: soft tissue inside bones that produces blood cells
fracture: crack or break in a bone
Main idea-
Adults have 206 bones in their body. long bones are yellow. injuries to bones are quite common. close fractures do not break skin.
{http://www.teachpe.com/images/anatomy/bone_structure.jpg} by Logan and Zoe

Vertebra (Vertebrae): bone that makes up the backbone
Cartilage: tough, flexible, connective tissue
Main Ideas ~
Our skeletal system is like the framework of a house. It supports and protects our body.It is made out of cartilage and bone.
Bone is hard tissue. Cartilage is tough but flexible connective tissue.
There are a couple different kinds of skeletons. There are exoskeletons and endoskeletons. Exoskeletons are like skeletons outside of your bodies. Endoskeletons are skeletons inside of your bodies. Humans have endoskeletons.
The main job of the skeletal system is to support the body. It also protects and gives the body shape. Besides that it has other jobs. It works together with muscles to move the body. It also stores minerals. Blood is even made in some bones!
Last but not least there is bone formation. Cartilage is replaced by living bone tissue. There are a couple of cells that help in this process. One makes up most of the bone. Another breaks down the bone during the remodeling and growth of the bones. It does seem a little weird but it makes sense because the shape and size of bones change over time.
{http://www.teachpe.com/images/anatomy/skeleton.jpg}