Skeletal & Muscular System

Skeletal System

Function: The skeletal system …. Holds the body up (structure and shape) Protects internal organs Helps the body move Stores minerals, Calcium, Phosphorus Makes blood cells

PARTS-BONES -make up the skeletal system Made of living cells and protein fibers - Produce blood cells in the bone marrow - 206 bones in adult body - 300 bones in infant (later fuse together)

PARTS-CARTILAGE - gives shape Connects the bones Supports the body Softer and more flexible than bone

PARTS-LIGAMENTS holds bones together at the joins Connects bone to bone 900 ligaments in human body

PARTS-JOINTS place where 2 or more bones connect together Allow movement

PARTS-TENDONS tough connective tissue that connects bone to muscle http://science.howstuffworks.com/life/6830-human-body-bone-strength-video.htm

MUSCULAR SYSTEM

Function The muscular system… -helps you move -helps move blood through the body (arteries/veins/capillaries) -pumps your blood (heart) -helps you breathe (lungs) -moves food through digestive system (stomach, intestines)

TYPES OF MUSCLE SMOOTH MUSCLE tissue in walls of organs, arteries, veins In the stomach, lungs, and other soft internal organs Involuntary movement (moves by itself) Controls the way blood flows through circulatory system

TYPES OF MUSCLE SKELETAL OR STRAITED MUSCLE: attached to legs, arms, back, and torso Helps to move bones Voluntary movement

TYPES OF MUSCLE CARDIAC MUSCLE: - only in the heart involuntary movement (moves by itself)

CONNECTION TO OTHER SYSTEMS Skeletal and muscular system work together to help you move Muscular system works with circulatory system to pump blood through the body Muscular system works with digestive system to move food through digestion Muscular system works with respiratory system to exchange gases Muscular system works with excretory system to eliminate waste Nervous system controls skeletal and muscular system