1.03 Understand the functions of the skeletal system

1.03 Understand the functions of the skeletal system What do you know about bone functions put three thoughts in your notes? 2

functions and disorders of the skeletal system 1.03 Understand the functions and disorders of the skeletal system Essential Standards: What are the functions of the skeletal system? 1.03 Understand the functions and disorders of the skeletal system 3

Functions of the Skeletal System What are the functions of the skeletal system? Protection Support Movement Hematopoiesis Mineral Storage Bone Formation

Functions of the Skeletal System Which skeletal structures provide protection? Skull protects _____ Spinal Column: ______ Ribs: ____________ Pelvic girdle: ______ Long bones: _________ Brain, spinal cord, all abdominal organs, all pelvic organs, bone marrow, 5

Functions of the Skeletal System How does the skeletal system provide support? provide a scaffold to support the body’s weight, the bones and cartilage of your skeletal system compose the scaffold that supports the rest of your body. 1.03 Understand the functions and disorders of the skeletal system 6

Functions of the Skeletal System Movement Types: Abduction/Adduction Circumduction Rotation Flexion/Extension Pronation Supination 1.03 Understand the functions and disorders of the skeletal system 7

Functions of the Skeletal System Movement in these pictures. Flexion/Extension: Flexion brings two bones closer together (flex muscles) Extension is to straighten; the act of increasing the angle between two bones ex: standing - knee joint extends 8

Functions of the Skeletal System Movement in these pictures. Abduction/Adduction (#2) Abduction: movement of limb away from midline of body Adduction: movement of limb toward midline of body 1.03 Understand the functions and disorders of the skeletal system 9

Functions of the Skeletal System Movement in these picture # 3. Circumduction: circular movement 1.03 Understand the functions and disorders of the skeletal system 10

Functions of the Skeletal System Movement Rotation: bone turns on its axis (turning your head side to side like showing NO) 1.03 Understand the functions and disorders of the skeletal system 11

Functions of the Skeletal System Movement Pronation: palm face down or laying on belly face down Supination: palm face up or laying on your back face up 1.03 Understand the functions and disorders of the skeletal system 12

Functions of the Skeletal System Discuss hemopoiesis Process of red blood cells made in red bone marrow of bones White blood cells are made in yellow bone marrow 1.03 Understand the functions and disorders of the skeletal system 13

Functions of the Skeletal System Which minerals are stored in the skeletal system? Calcium Phosphorus What is the relevance to your health? Needed for bone strength and cellular homeostasis 14

Functions of the Skeletal System Bone Formation Embryo skeleton starts as osteoblasts, then changes to cartilage Ossification, hardening of bones, (bone replaces cartilage) starts at 8 weeks of age Osteocytes, bone cells, are formed from Osteoclasts as bones grow and old cells are replaced 15

1.03 Understand the functions of the Skeletal System Essential Standards: What are the functions of the skeletal system? 1.03 Understand the functions and disorders of the skeletal system 16

1.03 Understand the functions of the skeletal system The End 1.03 Understand the functions and disorders of the skeletal system 17