Skeletal System Flashcards
Name the bones at the knee
Patella , femur , tibia and fibula
Name the bones at the elbow
Ulna , radius and humerus
Name the bones at the ankle
Tarsals , tibia and fibula
Name the bones at the shoulder
Clavicle , scapula and humerus
Name the bones at the hip
Pelvis and femur
Name the bones at the wrist
Carpals , radius and ulna
What is the axial skeleton?
Main core of the body:
- Vertebral column
- Ribs
- Sternum
- Cranium
What is the appendicular skeleton?
Apendage of the axial skeleton
- Upper limbs
- Lower limbs
- Shoulder girdle (clavicle , scapula and humerus)
- Pelvic girdle (ilium , ischium and pubis)
Functions of the skeleton
- Shape
- Support
- Movement
- Protection
- Mineral storage
- Blood cell production
Shape?
Determined by the skeletal framework
Support?
Bones support the weight of the body
Protection
Bones protect vital organs e.g. cranium protects the brain and the ribs protect the heart
Movement?
Skeleton is jointed to allow movement e.g. femur moves the leg
Blood cell production?
Red and white blood cells are produced in the marrow of long bones e.g. femur
Mineral storage?
Bones store minerals such as phosphorus and calcium which are involved in nerve transmission and metabolism
Name the types of bones
- Long
- Short
- Flat
- Sesamoid
- Irregular
What are long bones?
Longer than they are wide and act as levers to create movement as well as produce blood cells e.g. femur , humerus and tibia
What are short bones?
As long as they are wide and are used for weight bearing as well as acting as shock absorbers e.g. tarsals and carpals
What are flat bones?
They are wide and flat , they allow muscles attachment and protect vital organs e.g. cranium protects the brain
What are irregular bones?
Bones that have a complex and unusual shape. They function to protect and support as well as allow muscle attachment and movement e.g. lumbar , thoracic and cervical
What are sesamoid bones?
Held within a tendon and help reduce friction between a joint e.g. patella
Classification of joints
Fixed/fused = no movement possible e.g. cranium and pelvis
Synovial/freely moveable = e.g. hinge and ball and socket joints (their shape determines the range of movement)
Cartilaginous/slightly moveable = e.g. adjacent vertebrae
What is a joint?
It’s where 2 or more bones meet
Name the types of synovial joints?
- Hinge
- Ball and socket
- Pivot
- Condyloid
- Saddle
- Gliding
Details about hinge joints
Allow flexion , extension and plantar/dorsi flexion
e.g. elbow , knee and ankle
Details about ball and socket joint
Allow flexion , extension , abduction/adduction , circumduction and rotation
e.g. hip and shoulder
Details about pivot joint
Found at the neck and radio-ulnar and allows rotation