1030199
Human Skeletal System
- Bone Tissue Structures &
Functions
- extracellular matrix consists of calcium phosphate, collagen fibers, and glycoproteins-
- osteocytes - bone cells
- located within spaces in lacunae
- located within spaces in lacunae
- compact bone: arranged in osteons
- spongy bone a meshwork with diff organization from compact
bone
- extracellular matrix consists of calcium phosphate, collagen fibers, and glycoproteins-
- Bone Tissue Functions
- provides levers for body mvm't
- supports soft structures
- protects organs
- stores calcium and phosphrous
- provides levers for body mvm't
- Bone Cell Types
& Functions
- Osteoprogenitor - stem cell derived from mesenchyme that differentiates into an
osteoblast
- Osteoblast - lays down new bone for bone growth, remodeling, and repair.
- Osteocyte - maintains the matrix surrounding it
- Osteoclast - break down bone
- Osteoprogenitor - stem cell derived from mesenchyme that differentiates into an
osteoblast
- Joint Classifications
- Classification Based on Mvm't
- amphiarthrosis
- diarthrosis
- synarthrosis
- amphiarthrosis
- Classification Based on Structure
- fibrous
- cartilaginous
- synovial
- fibrous
- Classification Based on Mvm't
- Skeletal System
Regions/Classifications
- axial skeleton
- skull
- ethmoid
- cribriform plate
- forms the roof of the nasal cavity and part of the floor of the cranial cavity
- forms the roof of the nasal cavity and part of the floor of the cranial cavity
- crista galli (projection)
- perpendicular plate
of ethmoid
- cribriform plate
- frontal
- frontal sinus (cavity)
- supraorbital foramen (hole)
- superciliary arch (process)
- frontal sinus (cavity)
- lacrimal
- lacrimal groove connects orbital and nasal cavities
- lacrimal groove connects orbital and nasal cavities
- mandible
- alveolar processes
- coronoid process
- head of mandible
- mandibular foramen
- alveolar processes
- maxilla
- infraorbital foramen
- palatine process
- infraorbital foramen
- nasal
- occipital
- external occipital protuberance
- external occipital protuberance
- palatine
- parietal
- sphenoid
- foramen ovale
- foramen rotundum
- foramen spinosum
- greater wing
- inferior orbital fissure
- lesser wing
- sella turcia
- superior orbital fissure
- foramen ovale
- temporal
- cartoid canal
- external acoustic meatus - opening into the external auditory canal
- foramen lacerum - no structure passes completely through this
- internal acoustic meatus
- mastoid process - att. pt. for neck muscles
- styloid process - att. pt. for tongue muscles
- zygomatic process - projection that articulates w/temporal process of the zygo. bone
- cartoid canal
- vomer
- zygomatic
- frontal process - articulates with frontal bone
- maxillary process - articulates with zygomatic process of the maxillary bone
- temporal process - articulates with zygomatic process of the temporal bone
- frontal process - articulates with frontal bone
- ethmoid
- vertebral column
- 32 typical vertebra
- 7 cervical
- atlas
- axis
- vvertebra prominens
- 12 thoracic
- 5 lumbar
- 5 sacrum
- coccyx (3-5 fused)
- 32 typical vertebra
- ribs
- sternum
- manubrium
- body
- xiphoid
- manubrium
- skull
- appendicular skeleton
- pectoral girdle
- paired clavicles
- acromial end (flattened horizontally)
- sternal end (triangular)
- acromial end (flattened horizontally)
- scapula
- processes
- acromion
- coracoid
- spine
- acromion
- depressions
- glenoid fossa
- infraspinous fossa
- subscapular fossa
- supraspinous fossa
- glenoid fossa
- angles
- superior angle
- inferior angle
- superior angle
- projections
- infraglenoid tubercle
- supraglenoid tubercle
- infraglenoid tubercle
- processes
- paired clavicles
- upper limb
- humerus (shoulder)
- ulna (elbow)
- radius (spoke of a wheel)
- carpals (wrist)
- proximal row
- distal row
- proximal row
- metacarpal (wrist)
- phalanges
- humerus (shoulder)
- pelvic girdle
- Os Coxae
- acetabulum
- obturator foramen
- acetabulum
- Ilium
- iliac crest
- iliac tuberosity
- anterior inferior iliac spine
- anterior superior iliac spine
- greater sciatic notch
- iliac crest
- posterior inferior iliac spine
- posterior superior iliac spine
- iliac crest
- Ischium
- lesser sciatic notch
- ischial tuberosity
- lesser sciatic notch
- Pubis
- symphysical surface
- site of articulation for pubic bones at pubic symphysis
- site of articulation for pubic bones at pubic symphysis
- symphysical surface
- Os Coxae
- lower limb
- Tibia (large shin bone)
- Fibula (clasp or bickle)
- Tarsals (a flat surface)
- Metatarsals
- Phalanges
- Tibia (large shin bone)
- pectoral girdle
- axial skeleton
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