Skeletal, Muscular, and Integumentary Systems Human Skeleton Your Bones Chapter 46 Skeletal, Muscular, and Integumentary Systems
Structure of Skeletal Muscle
Contraction of a Muscle
Three Types of Muscle Tissue
Structure of the Human Knee
Three Basic Types of Joints
Human Skeleton
Structure of Bone Tissue
Three Types of Skeletal Tissue
Types of Joints
Cross Section of Skin
Three Types of Epithelial Tissue
Human Anatomy Terms Superior - toward the head Inferior - away from the head Anterior - the front of the body or body part Posterior - the back of the body or body part Medial - toward the midline that divides left and right Lateral - to the side away from the midline Proximal - closer to the torso Distal - farther away from the torso Anatomical position - standing erect, facing the observer, arms are at the sides with palms facing forward.
Bone is one of the strongest materials Bone is one of the strongest materials. Bones are much lighter than steel or concrete, but weight for weight, they are much stronger.
Many people develop back problems as they get older Many people develop back problems as they get older. The discs start to wear away. The vertebra come out of place causing pain. The back gets stiff and makes it difficult to move. Animals with flexible backbones and skeletons inside their bodies are called vertebrates. Your backbone is a flexible chain of 26 bones.
Your rib cage is made up of 12 vertebrae, 24 ribs and a breastbone in three parts.It protects your heart and lungs from knocks and bumps.
Over half your bones are found in your hands and feet Over half your bones are found in your hands and feet. There are 26 bones in each foot and 27 in each hand.
Hinge Joint Ball and Socket Joint
Muscular System Your Muscles
Muscles need oxygen and food for energy from your blood in order to work properly. If they work hard but do not get enough, they may go into a spasm and you feel the pain of a cramp.
Your strongest muscles are the masseters on each side of your mouth Your strongest muscles are the masseters on each side of your mouth. They allow you to bite into things with a force of 73kg (160lb).
Most of your heart is made of cardiac muscle Most of your heart is made of cardiac muscle. The cardiac muscle never gets tired and never stops working until you die.