basics of anatomy Flashcards
What structures are present just deep to the eyebrows that allow nerves and arteries to pass?
Superorbital Foramina
The superorbital foramina are openings in the frontal bone that allow for the passage of nerves and blood vessels.
Which bone contains the frontal sinus?
Frontal
The frontal sinus is located within the frontal bone, which is situated in the forehead region.
Where is the glabella located?
Just above the bridge of the nose
The glabella is a smooth area between the eyebrows on the frontal bone.
What are the two mirror-image bones that form much of the superior and lateral portions of the skull?
Parietal Bones
The parietal bones are located on the sides and top of the skull.
The coronal suture is formed by the articulation of which bones?
Parietal and Frontal
The coronal suture separates the frontal bone from the parietal bones.
The sagittal suture is formed by the articulation of which two bones?
The two parietal bones
The sagittal suture runs along the midline of the skull, connecting the left and right parietal bones.
The lambdoid suture is formed by the articulation of which bones?
Occipital and Parietal
The lambdoid suture is located at the back of the skull.
The squamous suture is formed by the articulation of which bones?
Parietal and Temporal
The squamous suture is located on the lateral aspect of the skull.
The coronal suture is formed by the articulation of the parietal and frontal bones. True or False?
True
This suture is critical in defining the boundaries between these two bones.
The sagittal suture is formed by the articulation of the two parietal bones. True or False?
True
The sagittal suture is the midline suture of the skull.
The lambdoid suture is formed by the articulation of occipital and parietal bones. True or False?
True
This suture is located at the posterior aspect of the skull.
The posterior and base of the skull is formed by which bone?
Occipital
The occipital bone houses the foramen magnum.
What is the foramen magnum?
Passageway through which the spinal cord leaves the skull
It is also the largest opening in the occipital bone.
What is the largest opening in the occipital bone?
Foramen magnum
This structure is crucial for the connection between the brain and spinal cord.
Cranial nerve XII leaves the skull via small openings immediately lateral to the foramen magnum called what?
Hypoglossal Canals
These canals allow the hypoglossal nerve to exit the skull.
What is the function of the occipital condyles?
Articulate with the C1 vertebrae to allow the head to nod
The occipital condyles are critical for head movement.
The external occipital protuberance and crest and the nuchal lines are what?
Sites of muscle and ligament attachment
These structures provide attachment points for the muscles that support the head.
The two mirror-image bones that form the inferolateral aspect of the skull and part of the middle cranial fossa are what?
Temporal bones
The temporal bones play a key role in housing structures related to hearing and balance.
What forms the posterior section of the zygomatic arch?
Zygomatic Process; Temporal Bone
This process is an extension of the temporal bone.
The mandible articulates with which part of the temporal bone?
Mandibular Fossa
This articulation is necessary for jaw movement.
The external acoustic meatus is what?
Canal leading to the eardrum; Temporal Bone
This canal is essential for transmitting sound waves to the inner ear.
The hyoid bone is attached by ligaments to which part of the temporal bone?
Styloid
The styloid process provides an anchor point for muscles and ligaments associated with the hyoid bone.
