The Skeleton Flashcards
(42 cards)
What is an osteoblast?
Forms bone (1 in 10 become osteocytes)
What is an osteoclast?
Removes bones
What is an osteocyte?
maintains bone
What is a chrondroblast?
Forms cartilage
What is the haversian system?
Lacunae = space full of liquid where osteocytes are located
Canaliculi = vessels where osteocytes communicate through
What are the four types of teeth?
Incisors, canines, premolars, molars.
Where do teeth sit?
Within the alveolar bone of the mandible and maxilla
What is enamel?
White and compact covering the dentine of the crown
What is cementum?
a bony tissue that covers the roots and holds the tooth in place via the periodontal ligament
What is dentine?
Softer than enamel, makes up the bulk of the tooth
What is the Pulp cavity
at the centre of the tooth surrounded by dentine, contains blood vessels and nerves.
What is the perideontal ligament?
Holds the tooth in place
What is an ameloblast?
Forms enamel
What is a detinoblast?
Forms dentine
What are long bones?
Longer than they are wide (e.g femur, tibia)
What are short bones?
as long as they are wide (e.g carpals and tarsals)
What are flat bones?
e.g scapula, parietals, ribs
What are irregular bones?
have complex shapes (e.g vertebrae)
What are sesamoid bones?
bones embedded in tendons (e.g patella)
What is the cranial skeleton?
all bones of the skull
What is the postcranial skeleton?
all bones below the skull
What is the axial skeleton?
All skeletal elements of the skull and trunk (incl. rib cage and hip bones)
What is the appendicular skeleton?
all limb bones
What are notches?
Indentations at the edge of bone
