Chapter 7 Flashcards
How many bones are in the axial skeleton
80
Number of skull bones
8 cranial bones
14 facial bones
Number of bones associated with the skull
6 auditory ossicles
hyoid bone
Number of thoracic cage
The sternum
24 Ribs
Number of vertebral column
24 vertebrae
the sacrum
the coccyx
Define joint or articulation
Forms where 2 or more bones connect
3 Major functions of a sinus
- Lessens the weight of the bone
- Lined with mucus membranes - moistens and cleans the air in and near the sinus
- They serve as resonating chambers in speech production
What is a suture
Bones are tied firmly together with dense fibrous connective tissue
What is the purpose of the fontanelles
Connections are flexible, so the skull can with stand the distortion that normally takes place during delivery.
What is the importance of the secondary curves of the spine
“Compensation curves”
Permits upright posture
Kyphosis
Abnormal posterior exaggeration of the thoracic curvature
Lordosis
The abdominal and buttocks protrude abnormally causing anterior exaggeration of the lumbar curvature
Scoliosis
Abnormal lateral curvature of the spine
What happens to the size of the vertebral body as you proceed caudally. why?
Loading increases so the vertebral bodies gradually enlarge.
How many pair of ribs are in the human body
12
