4Bone Facts:Function - Your bones manufacture red blood cells and store useful minerals.Bones are held together by muscles that allow them to move.Some bones are joined by flexible parts called joints.Ligaments – connective tissue which holds bone in moveable joints. (A sprain is when ligaments are stretched too far.)The smallest bones are in your ear.The largest bone, the femur, is found in your thigh.
6Living Bones The bones in your body are very much alive. Each is a living organ made of several different tissues.Like all the other living tissues in your body, bone tissue is made of cells that take in nutrients and use energy.Bone cells have the same needs as other body cells.
7Functions of Your Skeletal System The skeleton gives shape and support to your body.Bones protect your internal organs.
8Functions of Your Skeletal System Major muscles are attached to bone and help them move.Blood cells are made in the bone marrow.Calcium and phosphorous are stored in the skeleton for later use.
13Bone StructureBones have bumps, edges, round ends, rough spots, and many pits and holes.Muscles and ligaments attach to some of the bumps and pits.In your body, blood vessels and nerves enter and leave through the holes.
28Osteoporosis – mineral loss in bones where they become weak and break easily.
29Scoliosis-Possible causes:congenital spine deformities, genetic conditions, neuromuscular problems, etc.-Over 80% of scoliosis cases, have no known cause and are found in otherwise healthy people.Interactive
38Movement of the Human Body Muscle - an organ that can relax, contract, and provide the force to move your body parts.What is the difference between voluntary and involuntary muscles?
39Involuntary Muscles – muscles you can’t control consciously. work all day longEx: circulatory and digestive muscles.
40Voluntary muscles - Muscles that you are able to control .
41Parts of the Muscular System Define each part of the Muscular System.Smooth MusclesSkeletal MusclesParts of the Muscular SystemCardiac MusclesTendons
42Cardiac muscles Involuntary muscle that controls the heart. Types of Muscles:Cardiac muscles Involuntary muscle that controls the heart.Skeletal musclesVoluntary muscles that make us moveTHEY WORK IN PAIRS. Muscles always pull. They never push.Smooth muscles Involuntary muscles in organs and body systems.
43the muscles that move bones muscles that work in pairs Skeletal Musclesthe muscles that move bonesmuscles that work in pairsTendons - Tissues that attach muscle to bones toenable movement .Walking bobby pin
51Epidermis – Upper layer of thin skin where skin cells die and flake off. Dermis – Layer of cells below the epidermis where blood vessel and nerve endings are located.
52List the 6 functions of the Integumentary / Skin Your Largest OrganYour skin is the largest organ of your body.Much of the information you receive about your environment comes through your skin.You can think of your skin as your largest sense organ.List the 6 functions of the Integumentary / SkinSystem.
53Functions of Integumentary / Skin System Covers body and prevents water loss.Protects body from infection or injury.Regulates body temperature.Eliminates waste - salt and excess water.Gathers information from environment (Touch, etc.)Produces Vit. D to help digestive
55Melanin Cells in the epidermis produce the chemical melanin. Melanin is a pigment that protects your skin and gives it color.The different amounts of melanin produced by cells causes differences in skin color.
56MelaninWhen your skin is exposed to ultraviolet rays, melanin production increases and your skin becomes darker.Lighter skin tones have less protection from the SunSuch skin burns more easily and may be more susceptible to skin cancer.