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Year 1
Physiology
Cartilage and Bone
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Cards (37)
What is the most abundant type of cartilage
Hyaline Cartilage
What is its relative strength compared to other cartilage types?
Weakest
type
What does it connect in the thorax
Ribs
to
sternum
What respiratory structure does it support
Trachea
What is Hyaline Cartilage role in joints?
Covers
opposing
bone
surfaces
What two protective functions does hyaline cartilage serve
Shock absorber
Forms
fetal skeleton
Cartilage characterized by high resilience and flexibility
Elastic
Cartilage
What are Elastic cartilage main location
External ear
Epiglottis
Auditory tubes
Strongest type of cartliage that acts as a aashock absorber
Fibrocartilage
Functions of bone
Support
Protection
Storage
Blood cell production
Movement
4 main type of bones
Long
flat
short
irregular
The structural material of bone composed of water, collagen fibers and mineral salts
Bone Matrix
What is the percentage of water in bone matrix structure
25%
What percentage is made up of collagen fibers
25%
What percentage consists of crystallized mineral salts
50%
What is the primary mineral salt in this structure
Calcium phosphate
Outer connective tissue layer of bone containing osteogenic cells
Periosteum
Bone forming cells that secrete collagen fibres for bone matrix
Osteoblast
What happens to the Osteoblasts after building matrix?
Become
trapped
in
lacunae
What do osteoblasts become after being trapped in lacunae?
Osteocytes
Mature bone cells trapped within lacunae
Osteocytes
What is the primary function of osteocytes?
Maintain bone
Bone resorbing cells that regulate bone turnover
Osteoclasts
What type of cells do osteoclasts develop from
Monocytes
What is the function of osteoclasts in bone metabolism
Digest
bone matrix for
normal bone turnover
Basic
structural
unit of compact bone also called haversian system

Osteon
What structure run through osteon's center?
Central canal
3 components are found in its central canal
Blood vessels
Nerves
Lymphatics
What surrounds the central canal in layers
Concentric lamellae
Dense bone tissue found beneath the periosteum with minimal spaces between structural components
Compact Bone
Small spaces in bone tissue that contain osteocytes
Lacunae
Small canals in bone tissue connecting lacunae
Canaliculi
Less dense bone tissue characterized by a lattice like structure
Spongy Bone
How does spongy bone structure differ from compact bone
Not arranged in
osteons
What is Spongy bones characteristic structural pattern
Irregular latticeworkof
trabeculae
What maybe found in the spaces between trabeculae
Red bone marrow
Structural elements forming the lattice in spongy bone
Trabeculae