Week 2 Part 1 Flashcards
Osteoclast
Cells that tear down old bones
Osteoblast
Cells that form a bone
Osteocytes
Mature bone cells are surrounded by a matrix
Skeletal system is
The frame that holds up the body
Different bones
Long bones
Short bones
Flat bones
Irregular bones
Flexion
Decreasing the angle of the joint
Extension
Opening the joint
Plantar Flexion
Bending downward
Dorsiflexion
Bending upward
Abduction
Moving the body part away from the midline
Adduction
Moving the body part back towards the midline
Inversion
Turning inward
Eversion
turns outward
Supination
face upward
Pronation
face downward
Rotation
When a bone spins on its axis
Periosteum
Connective tissue that covers bone tissue
Epiphysis
End of the bones
Area inside the diaphysis is called
Medullary cavity that contains bone marrow
Cartilage is
Firm and has a jelly-like matrix
What is a joint and what holds it together
Where one bone meets another bone
Ligament
Synovial joint
Move alot
Cartilaginous joint
Little movement
Fibrous joint
Do not move at all
Trabeculae
Holes in the spongy bones
How many pairs of true ribs are there
7
How many pairs of false ribs
3
How many pairs of floating ribs are there
2
Attaching to each girdle is a long bone
Humerus in the arms
Femur in the legs
Ulna
Radius
Tibia
Fibula
Carpals
Tarsals
Metacarples
Metatarsals
Phalanges