PPT-8 th grade Health Unit Muscles and Skeletal Systems

Bell Ringer Pick up and complete the Saved by the skeleton worksheet Front and back Skeletal system an internal system made up of bones joints and connective tissue There are 206 bones in the body. More than 600 muscles in our bodies (about 650). Muscles make up approximately half of the human body’s weight. The human heart will beat . about 40 million times a year. , and . a person's heart will beat approximately 2.5 billion times by the time of their 70th birthday.. Interesting Muscle Facts. Thirty facial muscles create looks like surprise, happiness, sadness, and frowning. Eye muscles are the busiest muscles in the body. Scientists estimate they may move more than 100,000 times a day. The . sliding . filament theory . of . muscle contraction. Gross . and microscopic structure of skeletal muscle. The . ultrastructure. of a myofibril.. The . roles of . actin. , myosin, calcium ions and ATP in myofibril contraction.. The heart is odd one out. The heart is made from cardiac muscle. The bicep muscle (in the arm), the calf muscles ( in the legs) and the diaphragm (in the chest) are types of skeletal muscles.. Investigating muscle strength . As it contracts it . -causes movement. -maintains posture. -stabilizes joints. -and generates heat. . Muscle Types. Skeletal muscle (voluntary). muscle attached to the skeleton. cells are long, striated, and multinucleate. Chapter 6. Time for a Movie.  . Discovery . Channel . Pushing the Limits: Muscle Fibers.  . 10:39: Describe skeletal muscle fibers (muscle cells)..  . 11:21 How many skeletal muscle fibers do we normally use at any one time?. 1. The Skeletal System provides five major functions which are…. 1. SHAPE & SUPPORT. 2. ENABLES YOU TO MOVE. 3. PROTECTS YOUR INTERNAL ORGANS. 4. PRODUCES BLOOD CELLS &. 5. STORES CERTAIN MATERIALS UNTIL YOUR BODY NEEDS THEM.. THE HUMAN BODY: The Skeletal & Muscular Organ Systems 1 The Skeletal System provides five major functions which are… 1. SHAPE & SUPPORT 2. ENABLES YOU TO MOVE 3. PROTECTS YOUR INTERNAL ORGANS Chapter 5: The Muscular System. The three major categories of muscle fibers are:. Skeletal . Smooth . Cardiac . Muscle Tissue. Skeletal Muscle (striated / voluntary muscle). Attached . to bones . and are largely . ~What are the functions of the skeletal system?. ~What are some disorders of the skeletal system?. ~How are skeletal disorders treated?. ~How does the skeletal system relate to the body’s systems of support and movement?. The Skeletal System . Skeletal System – bones of the body, shields important organs, gives your body shape. Skull protects the brain / Ribs Protect your heart and lungs / Back bone protects your spinal cord. Anatomy & Physiology. Turner college & career high school. Our skeletal system provides a framework for the muscles and helps in the basic function of movement. .. However. , due to age and various other factors, the bones become weak and fragile and may get affected by some common disorders.. Energy Sources for Contraction. ATP is the supplied energy for muscles. Can only supply enough for a short period of time. ATP is generated from . Creatine. Phosphate. Contains high energy phosphate bonds . Functions of the Skeletal System. Form. Protection. Support. Strength. How does it work?. Bone. - Hard tissue that supports and protects other organs. Cartilage. - . Firm, flexible tissues that is not as hard as .