Skeletal System
This type of bone contains trabeculae while this type of bone is made up of osteons.
Spongy
Compact
In addition to breaking down bone to release calcium, these cells also make the medullary cavity larger during primary ossification and fracture remodeling
osteoclasts
These 2 bones make up what is commonly referred to as the "breastbone"
manubrium (superior portion)
sternum (larger portion)
The formation of this is the first step in fracture healing
hematoma
A newborn's "soft spot" is actually the result of what two unique features of an infant's skeleton
Bone has not ossified yet and the skull bones have not completely fused
Name an example of an incomplete fracture.
Greenstick (only seen in infants/very young children)
The skeletal system can be divided into these 2 divisions
Axial and Appendicular
The ______ contains spongy bone while the ________ contains compact bone.
epiphysis; diaphysis
the primary function of articular cartilage is...
to prevent bone on bone rubbing/lubricates joints
Name the 6 types of synovial joints.
ball and socket
saddle
condyloid
hinge
pivot
gliding (plane)
During a Bullets football game, Griffin Liles makes a big hit on the opposing running back and you see a segment of bone protruding through the skin of the RB's arm. What type of fracture did the RB just suffer?
Compound fracture
Red bone marrow produces what
blood cells
This hormone stimulates osteoblasts and is released when blood calcium levels are too high
Calcitonin
Osteoblast activity is stimulated by which hormone
Calcitonin
What are the four types of bones?
Long, short, irregular, flat
________ connect bone to bone while ________ connect muscle to bone
Ligaments
Tendons
The inorganic portion of bone is primarily composed of
hydroxyapatite (calcium and phosphate)
Name the three types of joints
fibrous
cartilaginous
synovial
What gland secretes calcitonin?
PTH?
thyroid gland
parathyroid gland
The organic portion of bone (osteoid) provides bone with what characteristic?
flexibility/tensile strength
The organic portion of bone is referred to as what
Osteoid
The shoulder (humerus articulating with scapula) is an example of this type of synovial joint.
Ball and socket
Name an example of a pivot joint
cervical vertebrae C1 (atlas) and C2 (axis) articulating with the skull
I.e. shaking your head "no"
Name the divisions of the vertebrae and how many segments in each type?
cervical-7
thoracic-12
lumbar-5
Children with a chronic nutritional deficiency of calcium and/or vitamin D are at risk for developing this disease
Rickets