#2 Bones of the Skull Flashcards
What happens to a baby’s head during childbirth?
The baby’s head compresses to pass through the birth canal.
What are fontanelles?
Soft spots on a baby’s skull that allow for compression and rapid brain growth.
At what age do fontanelles typically close?
By age two.
What are skull sutures?
Junctions between the bones of the skull.
What does the coronal suture divide?
The frontal bone from the parietal bones.
What does the sagittal suture divide?
The left and right parietal bones.
What does the squamous suture outline?
The temporal bone.
What is the lambdoid suture located between?
The parietal bones and the occipital bone.
What is the mandible?
The lower jawbone, a single bone.
Name two features of the mandible.
- Mandibular condyle
- Coronoid process
What does the mandible contain for nerves and blood vessels?
Foramina, such as the mental foramen.
What is unique about the hyoid bone?
It does not articulate with other bones.
Where is the hyoid bone located?
Under the chin, supporting the larynx.
What do nasal bones form?
The bridge of the nose.
What do zygomatic bones form?
The cheekbones.
What does the maxilla hold?
Upper teeth and forms part of the nasal cavity.
What part of the nasal structure does the vomer contribute to?
The nasal septum.
What do lacrimal bones form?
Part of the eye socket and are associated with tear ducts.
What region does the frontal bone occupy?
The forehead region.
What do parietal bones form?
The sides and roof of the cranial cavity.
What do temporal bones house?
Structures of the ear, including the mastoid and styloid processes.
Where is the occipital bone located?
At the back of the skull, containing the foramen magnum.
What is the shape of the sphenoid bone?
Butterfly-shaped.
What is the role of auditory ossicles?
Involved in hearing.
What do nasal conchae do?
Warm and humidify inhaled air.
Which bones are prone to fractures due to their thin structure?
- Nasal bones
- Zygomatic bones
What is one primary function of the skull?
To protect the brain.
What does the axial skeleton include?
- Skull
- Vertebral column
- Rib cage
What is the primary role of the axial skeleton?
Providing structural support and protection.
