- Created by: ATDANMAN01 Becky
- Created on: 22-05-20 12:16
Key Terms - Part 1
Bone - the dense, semi-rigid, porous, calcified connective tissue forming the major portion of the skeleton in most vertebrates
Cartilage - firm, flexible connective tissue found in various forms. Reduces friction. Found in joints, ears and nose.
Ligaments - a short band of tough, flexible fibrous connective tissue which connects bone to bone.
Tendons - a flexible but inelastic cord of strong fibrous collagen tissue attaching muscle to bone.
Synovial Fluid - a viscous, non-Newtonian fluid found in the cavities of synovial joints. Lubricates joints. Reduces friction.
Synovial Membrane - a layer of connective tissue that lines the cavities of joints, tendon sheaths, and bursae. Produces synovial fluid.
Adaptation - an evolutionary trait that gives an animal an advantage in their habitat.
Key Terms - Part 2
Fracture - broken bones
Powered Flight - need to beat wings to fly
Canon Bone - a horse's main toe
- striated (stripy)
- fast and slow-twitch
- work in pairs (except for diaphragm)
- multiple nuclei
- lots of mitochondria
- never tires
- one nucleus
- y-shaped joined by intercalated discs
- spindle-shaped cell
- found within organs (stomach)
- one central nucleus
Bones: Functions and Structure
- protect the organs of the body (brain [skull], heart [ribs])
- give shape to the body (frog = long legs [jumping], gorilla = long arms [knuckle walking])
- structure and support the body (holds everything in place)
- enable mobility (allows for complex movement)
- produce red and white blood cells (bone marrow)
- store excess calcium (grow a lot during adolescence, no spare, become brittle, osteoporosis)
Bones are not solid = tough matrix (lighter) and bone marrow (like jelly) in centre
Bones: The Vertebrae
Atlas - first vertebrae, allows up and down movement
Axis - second vertebrae, allows side to side movement
Cervical Vertebrae - all mammals have 7 vertebrae, neck region.
Tender (thoracic) - connected to the ribs
Loving (lumbar) - behind the last rib to start of pelvis
Special (sacrum), above the pelvis
Care (caudal/coccygeal), the tail
Bones - The Skeleton