Section 4
Head and Neck Anatomy
1)
Regarding the bones of the skull:
a)
the middle cranial fossa does not extend to the posterior cranial vault
b)
the temporal lobe rests on the bony rather than the membranous part of the middle cranial fossa
c)
the posterior cranial fossa contains the cerebella and lies superior to the tentorium cerebelli
d)
the floor of the anterior cranial fossa is formed from the orbital plate of the parietal bone
e)
the cribriform plate lies in the midline and is formed from the roof of the sphenoid bone
2)
Regarding the bones of the skull:
a)
the anterior clinoid processes are formed by the lesser wings of the sphenoid
b)
the posterior clinoid processes are formed from the occipital bone
c)
the dorsum sellae is formed from the anterior part of the occipital bone
d)
the petious temporal bone forms the floor of the middle cranial fossa, but not the wall of the posterior
cranial fossa
e)
the inferior orbital fissure separates the lesser and greater wings of the sphenoid
3)
Regarding the cervical spine:
a)
all seven cervical vertebrae have spinous processes
b)
rotatory movements of the head occur mostly at the atlanto-occipital joints
c)
the odontoid process (peg) is encased by a bony canal in the axis
d)
all seven cervical vertebrae have foramina transversaria for the vertebral artery to pass through it
e)
spinous processes, where present, are all bifid except for C7
4)
Regarding the triangles of the neck:
a)
the posterior triangle is bound by trapezius, sternocleidomastoid and the middle quarter of clavicle
b)
the anterior triangle is further divided into two smaller triangles, the carotid and submandibular
triangles
c)
the posterior belly of digastric (and stylohyoid) separates the carotid and submandibular triangles
d)
the accessory nerve (CNXI) divides the posterior triangle into approximately two halves, and of these
the lower contains little of importance
e)
the investing fascia splits to enclose the sternomastoid and trapezius, but the parotia and
submandibular glands lie deep to the fascia, in the anterior triangle
5)
Regarding anatomy of the neck, landmarks:
a)
the arch of the cricoid cartilage is palpable as it protrudes forward of the trachea
b)
the cricoid cartilage marks the level of C5
c)
the transverse process of the axis is the most prominent of the cervical transverse processes, and is
palpable between angle of mandible and mastoid
d)
the body of hyoid is not palpable because it is hidden behind the thyroid cartilage
e)
the coracoid process of scapula is palpable within the deltopectoral triangle
