Skull Sutures Quiz
Questions: 16 · 10 minutes
1. A student traces a suture between the mastoid part of the temporal bone and the occipital bone. Which suture is being followed?
Parietomastoid suture
Sphenosquamous suture
Occipitomastoid suture
Lambdoid suture
2. On an image of the posterolateral skull, three sutures meet at one point: the lambdoid, parietomastoid, and occipitomastoid sutures. Which landmark has been identified?
Asterion
Pterion
Lambda
Bregma
3. The lambdoid suture primarily forms the boundary between which bones?
The frontal and parietal bones
The parietal bones and occipital bone
The temporal and sphenoid bones
The two parietal bones
4. Which suture runs along the midline between the right and left parietal bones?
Coronal suture
Squamous suture
Lambdoid suture
Sagittal suture
5. A midline suture persists between the two halves of the frontal bone in an adult skull. What is it called?
Metopic suture
Sagittal suture
Internasal suture
Frontonasal suture
6. A clinician examines the small posterior fontanelle of a newborn. This fontanelle lies at the future location of which landmark?
Pterion
Nasion
Bregma
Lambda
7. The large anterior fontanelle of a newborn occupies the site of which adult skull landmark?
Asterion
Bregma
Nasion
Lambda
8. An infant has premature fusion of the sagittal suture. Which skull-growth pattern is most directly associated with this condition?
A long, narrow skull caused by restricted side-to-side growth
A short, broad skull caused by restricted front-to-back growth
A uniformly enlarged skull in every direction
Flattening limited to the back of one temporal bone
9. Structurally, the major sutures of the skull are classified as which type of joint?
Fibrous joint
Synovial joint
Primary cartilaginous joint
Secondary cartilaginous joint
10. After a blow to the temple, imaging shows a fracture near the pterion. Injury to which vessel is a classic concern at this location?
Facial artery
Superior sagittal sinus
Internal carotid artery within the neck
Middle meningeal artery
11. A skull landmark is located where the sagittal suture meets the lambdoid suture. Which landmark is it?
Nasion
Asterion
Bregma
Lambda
12. During a superior view of the skull, an anatomy student finds the point where the sagittal and coronal sutures meet. What is this landmark called?
Lambda
Bregma
Asterion
Pterion
13. Premature fusion of one coronal suture is most likely to produce which pattern?
Symmetrical lengthening of the skull from front to back
Symmetrical widening of the entire posterior skull
Asymmetrical growth of the forehead and upper orbit
A midline ridge confined to the occipital bone
14. A surgeon identifies the pterion on the lateral skull. Which set of bones meets at this region?
Frontal, nasal, lacrimal, and maxillary
Parietal, occipital, temporal, and zygomatic
Frontal, parietal, temporal, and sphenoid
Sphenoid, ethmoid, vomer, and palatine
15. Which bones are separated by the coronal suture?
The parietal bones and the occipital bone
The two parietal bones
The frontal bone and the two parietal bones
The temporal bones and the occipital bone
16. Which suture lies between the parietal bone and the squamous part of the temporal bone?
Frontonasal suture
Squamous suture
Sagittal suture
Occipitomastoid suture