The muscular system

266 views
119 views

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
266
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

The muscular system

  1. 1. The Muscular System Chapter 21-3
  2. 2. Science Words • Muscle • Voluntary muscle • Involuntary muscle • Skeletal muscle • Tendon • Smooth muscle • Cardiac muscle
  3. 3. Moving the human body • Muscle-an organ that contracts and gets shorter- this provides the force to move your body parts. Muscles of the body
  4. 4. Muscle Control • Voluntary muscles- muscles that you are able to control • Examples are leg and arm muscles • Involuntary Muscles- you can not move them consciously. They just keep working • Examples- heart
  5. 5. Types of Muscles-skeletal • Skeletal Muscles-muscles that move bones • Attached to bones by tendons • Most numerous in the body • Look striped or striated • Voluntary muscles
  6. 6. Types of Muscles-Smooth Muscles • Smooth muscles- nonstriated • Involuntary • Move the internal organs • Contract and relax slowly • Example- small intestine
  7. 7. Types of Muscles-Cardiac Muscle • Cardiac muscle-found only in the heart • Involuntary • Striations • Contracts about 70 times a minute every day of your life.
  8. 8. Types of Muscles Types of muscles
  9. 9. How Muscles Work • Skeletal muscles-when one muscles contracts- another muscle relaxes • Muscles always pull- never pushes • Muscles use glucose • Produce thermal energy when they contract • Muscles that are not exercised become smaller How muscles work
  10. 10. Muscles and bones work together Working together A review

×