The Skeletal System Functions of the Skeletal System

Functions of the Skeletal System • • Supports and protects the body. Allows the

support • Bones provide support for your body. – If you did not have

protection • Bones protect organs. – ribs protect your heart and lungs – vertebrae

storage • Bones store minerals. – The hard, outer compact bones can store calcium.

blood cell production • Long bones produce red blood cells. – Inside larger bones

movement • Bones allow us to move – They provide a place for muscles

The Skeletal System • Is made up of: – bones – ligaments – cartilage

bones • Infant or baby – 305 bones • Adult – 206 bones –

bones • Bones grow – Bones have growth plates while you are growing. –

bone characteristics • Bone is alive – Full of blood vessels – Contains nerves

spongy bone compact bone periosteum bone marrow growth plate

vocabulary word! ligaments • ligaments - tough, flexible strand of connective tissue that holds

vocabulary word! cartilage • cartilage – strong, flexible connective tissue found at the ends

vocabulary word! joints • joints – the place where two or more bones connect.

Which cell part is like the skeletal system? cytoskeleton and cell wall

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The Skeletal System

Functions of the Skeletal System • • Supports and protects the body. Allows the body to move. Produces red blood cells. Stores minerals.

support • Bones provide support for your body. – If you did not have bones, you would be a blob of tissue on the floor.

protection • Bones protect organs. – ribs protect your heart and lungs – vertebrae protect your spinal cord – skull protects your brain

storage • Bones store minerals. – The hard, outer compact bones can store calcium. – Yellow marrow inside bones stores fat.

blood cell production • Long bones produce red blood cells. – Inside larger bones like the arm and leg bones there is a soft tissue called marrow. – Red marrow produces red blood cells. Red blood cells carry oxygen around the body.

movement • Bones allow us to move – They provide a place for muscles to attach

The Skeletal System • Is made up of: – bones – ligaments – cartilage – joints

bones • Infant or baby – 305 bones • Adult – 206 bones – Bones in the skull, pelvis, spine, and long bones fuse.

bones • Bones grow – Bones have growth plates while you are growing. – These close and become solid around age 20.

bone characteristics • Bone is alive – Full of blood vessels – Contains nerves (pain if broken) • Bone is made mainly of 2 minerals – Calcium – Phosphorous • Bone grows and changes all the time.

spongy bone compact bone periosteum bone marrow growth plate

vocabulary word! ligaments • ligaments - tough, flexible strand of connective tissue that holds bones together. – Found at the ends of bones

vocabulary word! cartilage • cartilage – strong, flexible connective tissue found at the ends of bones that cushions joints. – Ears and nose tip are made of cartilage.

vocabulary word! joints • joints – the place where two or more bones connect. – moveable joints allow movement • • sliding gliding ball and socket hinge – fixed joints limit movement • skull • pelvis

Which cell part is like the skeletal system? cytoskeleton and cell wall