With one exception, the skull bones are joined by sutures. Name the exception.
What bones are connected by the lambdoid suture?
What bones are connected by the squamous suture?
Name the eight bones composing the cranium.
Give two possible functions of the sinuses:
What bones contribute to the formation of the orbit?
Why can the sphenoid bone be called the keystone of the cranial floor?
cervical vertebra - typical
Describe how a spinal nerve exits from the vertebral column.
name two factors/structures that permit flexibility of the vertebral column
What is a herniated disc? What problems might it cause?
Which two spinal curvatures are observed at birth?
Under what conditions do the secondary curvatures develop?
The "secondary" curvatures, the compensatory curvatures, occur with normal development. (Normal development is the condition under which they occur) These are the cervical curvature, which develops first with infant head lifting and the lumbar curvature, which develops next sitting up. These curvatures prepare the spine for ambulation.
The major bony components of the thorax (excluding the vertebral column) are the ___________ and the _______________.
Differentiate between a true rib and a false rib.
Is a floating rib a true or false rib?
A free floating rib is neither a true or false rib. Ribs 1-7 are considered "true" ribs because they are directly attached to the sternum by individual coastal cartilages. Ribs 8-10 are considered "false" ribs because they are indirectly attached to the sternum by a common coastal cartilage. Ribs 11 and 12 are considered "free floating" because they are neither directly or indirectly attached to the sternum. Instead, they end in posterior abdominal musculature. They are still capped with cartilage though