1. Muscular System

2. General Characteristics
works with skeleton to produce movement
voluntary movement – deliberate moving of body parts
involuntary movement – circulate blood, move food through the digestive tract

3. Three Types of Muscle Tissue:
skeletal muscle – attached to skeleton, striated: appear striped, voluntary
smooth muscle – in walls of stomach, blood vessels and intestines, not striped, involuntary, causes food to move through digestive system
cardiac (cardio = heart) muscle – in the heart, striated, involuntary, may have two nuclei, causes heart to beat.

4. Muscle contraction – two types of fibers are
found in muscle cells. These fibers slide
across each other to contract each long,
cylindrical muscle cell
Myosin – thick fibers
Actin – thin fibers
Cross-bridges
Z line
Myosin
Actin
Sarcomere

5. Muscle Pairs Muscles have to work in pairs to move your bones.
When one muscle contracts the other must relax.

6. Muscle slide pictures

7. Skeletal Muscle

8. Smooth Muscle

9. Cardiac Muscle

10. Skeletal Tissue

11. Skeletal System

12. General Information: provides support for the body
protects internal organs
provides movement
stores minerals
site for red blood cell, white blood cell and platelet formation

13. Bone Structure:
Solid network of living cells & protein fibers surrounded by calcium salts
Periosteum – covering
Haversian canals – tubes that carry blood vessels & nerves
Osteocyte – mature bone cells
Bone marrow – soft tissue in middle of bones (yellow marrow is fat, red marrow makes blood cells)

14. Spongy bone
Haversian canal
Compact bone
Compact bone
Periosteum
Bone marrow
Spongy bone
Osteocyte
Artery
Periosteum
Vein

15. Cartilage – tough flexible connective tissue
found at ends of bones, nose & ear
skeleton of embryos
Ossification – cartilage is replaced by bone during development

16. Ligaments – hold bone to bones at joints
Tendons – connect muscles to bones
Osteoporosis – condition in which bones weaken and are easily broken

17. A B C D F E G H I K N M J O L P R Q S T U V W Q
Ball-and-Socket
Hinge
Saddle
Pivot