Infant Cranium Questions
Areas of incomplete intramembranous ossifications
What are fontanels (soft spots)?
The number of IMMOVABLE bones.
13 bones
Looking at the curvature side.
Identify the curvature associating with number 3.
What is the lumbar curve?
Name the three types of ribs.
What are the false, floating, and true ribs?
Looking at the Inferior view.
Identify number 3.
What is the zygomatic bone?
This fontanelle will close around 6 months of age.
Sphenoid fontanelle
2 bones, each side of face, upper jaw.
What is the maxillae?
Looking at the vertebrae side.
Identify the vertebrae region associated with number 3. Include the number of vertebrae in this region.
What is the lumbar region (5 vertebrae)?
This portion of the body is composed of thoracic vertebrae, sternum, ribs, and costal cartilage. It is also basket shaped.
What is the thoracic cage?
Look at the Anterior/Frontal view of the Skull.
Identify number 19.
What is the parietal bone?
The largest fontanelle, it typically closes between 12 and 18 months of age.
What is the anterior fontanelle?
Single bone, located at midline within nasal cavity
What is the vomer?
Looking at the vertebrae AND the curvature side.
Identify the vertebrae and curvature region associated with number 2. Include the number of vertebrae in this region.
What is the thoracic vertebrae/curve (12 vertebrae)?
This type of vertebrae is larger and thicker. It deals with a lot of stress, support most of the weight.
What is the lumbar vertebrae?
Looking at the inferior view.
Identify number 26.
This fontanelle usually closes by 2-3 months of age.
Posterior fontanelle
Does not articulate with any other bone.
Neck region below the mandible
Suspended by ligaments and muscles
Supports the tongue and provides for muscle attachment
What is the Hyoid Bone?
Looking at the curvature side.
Identify the type of curvature associating with number 4.
What is the sacral curve?
Name 3 of the 5 major regions of the vertebral column.
(Think --> Can Tom Learn Spanish Correctly)
7 cervical vertebrae (neck)
12 thoracic vertebrae (thorax)
5 lumbar vertebrae
5 sacral vertebrae
4 coccygeal vertebrae (fused into coccyx)
Looking at the anterior/frontal view of the skull.
Identify number 34.
What is the nasal bone?
Provide two characteristics of an infantile skull.
Relatively small face with a prominent forehead and large orbits.
Jaw and nasal cavity are small
Sinuses are incompletely formed
Frontal bone is in 2 parts
Skull bones are thin, but somewhat flexible and less easily fractured
In the skull, there are 4 bones with sinuses. Provide two examples.
Frontal, Ethmoid, Sphenoid, and Maxilla
Looking at the vertebrae side.
Identify the vertebrae region associated with number 1. Include the number of vertebrae in this region.
What is the cervical region (7 vertebrae)?
This is a large opening for the spinal cord.
What is the Vertebral Foramen?
Looking at the anterior/frontal view of the skull.
Identify number 8.
What is the maxilla?