Skeletal system vocabulary Flashcards
Osteon
basic functional unit of compact bone
Central canal
contains one or more blood vessels
Perforating canal
contains blood vessels
Lamellae
narrow sheets of calcified matrix
Osteocytes
bone cells
Lacunae
small pockets containing osteocytes
Canaliculi
small channels connecting lacunae to blood vessels
Process
Any projection or bump
Ramus
An extension of a bone making an angle with the rest of the structure
Trochanter
A large, rough projection
Tuberosity
A smaller, rough projection
Crest
A prominent ridge
Line
A low ridge
Spine
A pointed or narrow process
Head
The expanded articular end of an epiphysis
Neck
A narrow connection between epiphysis and diaphysis
Condyle
A smooth, rounded articular process
Trochlea
A smooth, grooved articular process shaped like a pulley
Facet
A small flat articular surface
Fossa
A shallow depression
Sulcus
A narrow groove
Foramen
A rounded passageway for blood vessels or nerves
Canal
A duct or channel
Meatus
A passageway through a bone
Fissure
An elongated cleft or slit
Sinus
A chamber within a bone, normally filled with air
diaphysis
extended tubular shaft
epiphysis
expanded area at each end of the long bone
Classes of bones by shape
sutural bones, irregular bones, short bones, long bones, flat bones, sesamoid bones
5 primary functions of skeletal system
- Support
- Storage of minerals and lipids
- Blood cell production
- Protection
- Leverage.
Epicondyle
a projection above a condyle
Tubercle
a small rounded process
Alveolus
a deep pit or socket
Fovea
A small pit or depression
Sulcus
A groove in a bone
