Surface anatomy of the cranium

Question 1

Pterion

Answer 1

H-shaped formation of sutures on the side of the calvarium representing the junction of four skull bones:
* the greater wing of the sphenoid bone.
*squamous portion of the temporal bone.
*frontal bone.
*parietal bone.

Question 2

Asterion

Answer 2

At the lateral aspect of the skull formed at the junction of the occipital bone, the temporal bone, and the parietal bone.

Question 3

Vertex

Answer 3

The top of the head.

Question 4

Lambda

Answer 4

The lambda is the meeting point of the sagittal suture and the lambdoid suture. This is also the point of the occipital angle.

Question 5

Stephanion

Answer 5

The point where the upper temporal line cuts the coronal suture is named the stephanion.

Question 6

Glabella

Answer 6

The area of skin between the eyebrows and above the nose.

Question 7

Opisthion

Answer 7

The median (midline) point of the posterior margin of the foramen magnum.

Question 8

Bregma

Answer 8

The midline bony landmark where the coronal and sagittal sutures meet, between the frontal and two parietal bones after closure of the fontanelle.

Question 9

anterior fontanelle

Answer 9

At the junction of coronal, sagittal and frontal sutures

Question 10

Sagittal suture

Answer 10

The midline cranial suture between the two parietal bones.

Question 11

Where is SSS in relation to the sagittal suture?

Answer 11

In most individuals it is located just right of the sagittal suture.