Skeletal Flashcards
The human body has how many bones?
206
The skeletal system is divided into ___ skeleton and ___ skeleton.
axial; appendicular
How many bones does the axial skeleton have?
80
Bones of the axial skeleton include…
vertebral column rib cage sternum skull hyoid bone
What does the vertebral column include?
33 vertebrae
—cervical, thoracic, lumbar, sacral
What does the rib cage include?
12 pair of ribs
—10 true, 2 floating
What does the sternum include?
manubrium
corpus sterni
xiphoid process
What does the skull include?
cranium
facial bones
What does the hyoid bone include?
attachment point for the tongue muscle
Purpose of the axial skeleton
protect vital organs including the brain, heart, and lungs
How many bones does the appendicular skeleton have?
126
Bones of the appendicular skeleton include…
pectoral girdle
pelvic girdle
appendages
What does the pectoral girdle include?
scapulae (shoulders)
clavicles (collarbone)
What does the pelvic girdle include?
2 pelvic (hip) bones that attach to the sacrum
What does the upper appendages (arms) include?
humerus radius ulna carpals metacarpals phalanges
What does the lower appendages (legs) include?
femur patella fibula tibia tarsals metatarsals phalanges
Location where 2 or more elections of skeleton connect
Joints
Functional classes of joints
Synarthrosis
Amphiarthrosis
Diarthrosis
Synarthrosis joints - movement type and location.
immovable
skull sutures, teeth/mandible
Amphiarthrosis joints - movement type and location.
slightly moveable
intervertebral disc, distal tibiofibular joint
Diathrosis joints - movement type and location.
freely moveable
wrist, knee, shoulder
Structural classes of joints
fibrous
cartilaginous
synovial
