The Human Skeleton Flashcards
What are the 3 types of skeleton
Hydrostatic- More of liquid than bones
Exoskeleton - Skeleton is on the outside
Endoskeleton - Skeleton on the inside
What are the 4 main roles of the skeleton?
- Allows movement
- Protects the organs
- Produces blood cells
- Supports the body
The main bones of the skeleton
Cranium
Jaw
Clavicle
Scapula
Sternum
Ribcage
Humerus
Vertebrae
Radius
Ulna
Pelvis
Femur- strongest bone
Tibia
Fibular
Bone structure
Compact bone
Spongy layer
Marrow
Types of bone and function
Long- Movement
Short- Shock absorption
Flat(Plate)- Protection of vital organ
Irregular- Provide shape/protection
Structural Classification of Joints
Fibrous Joint- Slightly immovable
Cartilaginous Joint- Exhibits a range of mobilities
Synovial Joint- Freely movable
Roles of different joints
Ball and socket- around an axis
Hinge joint- in one direction
Pivot joint- all directions
Fixed joint- none
Skeletal joint
Bone
Cartilage {In this order
Synovial fluid
Ligament
Why is blood red?
Because of Haemoglobin
