Module 1 Flashcards
list 3 different types of cartilage
- hyaline
- elastic
- fibrocartilage
cartilage - hyaline
- forms epiphyseal plate
- covers ends of articulating bone
- most abundant
cartilage - elastic
- maintains shape
- forms auricle
cartilage - fibrocartilage
- forms knee
- inteveterbral discs
- pubic symphysis
list the 5 functions of bones
- support
- protection
- storage of minerals and triglycerides
- blood cell production
- movement
axial skeleton
- skull
- vertebral column
- ribcage
appendicular skeleton
- limbs
- shoulder
- pelvic girdle
list the 4 different bone shapes
- long
- short
- flat
- irregular
tuberosity
rough + rounded
trochanter
large + irregular projection
tubercle
small + rounded
spine
pointed
process
bony bump
crest
prominent bony ridge
malleolus
projection shaped like hammer head
head
round expression at end of bone
condyle
smooth rounded surface at end
osteomalacia/rickets
- lack of calcium phosphate crystals
- soft, flexible, deformed bones
- insufficent calcium intake
- vitamin d defficieny
osteogenesis imperfecta (brittle bone disease)
- congenital
- affects quantity + quality of collagen fibres
- brittles + easily fractured
- no cure
- requires strengthening
osteoporosis
- bone absorption outpaces bone deposition
- reduction in bone mass
- normal matrix components but in reduced amounts
structure of bone (tissues)
- connective tissues
- nervous tissue
- muscle + epithelial tissue
list the 3 types of connective tissue
- osseous tissue
- adipose tissue
- hyaline cartilage
list the 3 components of the matrix
- collagen fibres
- calcium phosphate crystals
- ground substances
collagen fibres
flexibility + tensile strength
calcium phosphate crystals
hard + compressive strength
list the specialised cells of osseous tissue (4)
- osteoprogenitor
- osteoblasts (bone building)
- osteoclasts
- osteocytes
intersitial bone growth
- lengthens the bone
- occurs at epiphyseal plate
- generation of new cartilage on top
apposiitonal bone growth
- widens bone
- outer surface
regulation of bone growth
- GH
- TH
- promotes and ends growth
list the 2 different types of bones
- compact
2. spongy
compact bone
- osteons
- resist forces
spongy bone
- osseous tissue
- trabeculae (irregular lattice)
- resists from all directions
structures of an osteon (3)
- central canal
- concentric circles
- osteocytes
osteon - central canal
contain blood vessels and nerves
osteon - concentric circles
hollow cylinders
osteon - osteocytes
lie between the cylinders of the matrix
list 3 steps of fracture treatment
- reduction
- immobilisation
- rehabilitation
closed fracture
bone does not break the skin
open fracture
bone protrudes skin
greenstick fracture
incomplete break
compression fracture
bone crushed
spiral fracture
ragged bone as a result of excessive twisting
epiphyseal fracture
bone breaks along epiphyseal plate
transverse fracture
bone breaks along shaft
depressed fracture
- broken bone pressed inwards
avulsion fracture
bone fragments away from main bone (usually at sight of tendon or ligament attachment)
pathological fracture
caused by disease that weakens bones
colles fracture
break at distal end of radius
scaphoid fracture
common carpal bone fracture
potts fracture
fracture of both tibia and fibula
list the 4 steps of fracture repair
- HAEMATOMA FORMS
(clot forms) - FIBROCARTILLAGINOUS CALLUS FORMS
(fibroblasts produce collagen, chondrocytes produce collagen, splints broken end) - BONY CALLUS FORMS
(converted to spongy, bone ends united) - BONE REMODELLING
(compact bone replaces spongy, osteoclasts remove excess bone)
list the 3 functional classifications of joints
- synarthosis
- amphiarthosis
- diarthosis
synarthosis
immovable
amphiarthosis
slightly moveable
diarthosis
freely moveable
list the 3 structural classifications of joints
- fibrous
- cartilaginous
- synovial
fibrous joint
- no joint cavity
- immovable/slightly moveable
cartilaginous joint
- no joint cavity
- immovable/slightly moveable
synovial joint
- joint cavity present
- freely moveable
list the 5 structures of a synovial joint
- articular capsule
- joint cavity
- synovial fluid
- articular cartilage
- reinforcing ligament
synovial structures - articular capsule
- surrounds entire joint
- 2 layers = outer fibrous and inner synovial which produces fluid
synovial structures - joint cavity
- separates articulating bones + contains fluid
synovial structures - synovial fluid
- shock absorbs
- reduces friction
- circulates nutrients
- removes waste
synovial structures - articular cartilage
- covers ends of bones
- shock absorption
- reduces friction
synovial structures - reinforcing ligament
stabilises joints
list the 4 additional structures of a synovial joint
- menisci
- muscle tendons
- bursae/tendon sheaths
- fat pads
additional structures of a synovial joint - menisci
discs of fibrocartilage
- stabilises
- shock absorbs
- reduces friction
additional structures of a synovial joint- muscle tendons
stabilises
additional structures of a synovial joint- bursae/tendon sheaths
bags of synovial fluid
- reduces friction
additional structures of a synovial joint - fat pads
protect joints + structures
list the the types of synovial joints
- plane e.g. intercarpal
- pivot e.g. atlas axis
- condylar e.g. wrist
- hinge e.g. elbow
- saddle e.g. carpometacarpal joint of thumb
- ball + socket e.g. shoulder