The cheek bones are formed by the zygomatic arches, which are part of the temporal bones of the face. The mental protuberance forms the chin, the styloid processes are just under the ears and serve as an attachment point for several muscles of the mouth and throat, and the pterion is the suture where the frontal, parietal, temporal, and sphenoid bones come together.

The costal cartilage of the ribcage is joined to the sternum, which is made up of three bony structures: the most superior is the manubrium, which articulates not just with the costal cartilage of the first rib but also with the clavicles. The body of the sternum is inferior to the manubrium, and articulates with the second through fifth ribs. The xiphoid process is a small protuberance just below the body of the sternum, at the point where the bottom of the ribcage meets the sternum. It is an attachment point for several muscles, including the diaphragm, the rectus abdominis, and the transverse abdominis. This is a common location for referred pain from gallbladder disease, GERD, or pain due to musculoskeletal injury or irritation.

The foramen that forms the ear canal is called the external auditory meatus. This travels through the temporal bone and joins the inner ear to the outer ear. The internal auditory meatus passes through the temporal bone between the posterior cranial fossa and the inner ear, and is the track through which the vestibulocochlear nerve, the facial nerve, and the labyrinthine artery travel from the inner ear toward the CNS. The foramen ovale and foramen rotundum are both openings in the sphenoid bones and have to connection to the ear.

The nasal cavity is formed by the following bones: the maxilla, the vomer, the nasal bone, the palatine bones, the lacrimal bone, and the ethmoid bone. It is also formed by the nasal conchae and the septal cartilage. The sphenoid forms part of the orbit and multiple sinuses but does not form any art of the nasal cavity directly.

The scapula has multiple fossa that serve as attachment points of various bones and muscles of the shoulder. Among these are the glenoid fossa, where the head of the humerus articulates with the scapula, the subscapular fossa, which is an attachment for the subscapularis muscle, the infraspinous fossa, to which the infraspinatus attaches, and the supraspinous fossa, to which the supraspinatus muscle attaches. There is no suprascapular fossa on the scapula.

The superior orbital fissure, an opening in the back of the orbit formed by the lesser and greater wings of the sphenoid bone, has several important structures passing through it. These include the ophthalmic nerve (CN V1), the abducens nerve (CN VI), the trochlear nerve (CN IV), and the superior and inferior divisions of oculomotor nerve (CN III). It also transmits various blood vessels and the sympathetic fivers from the cavernous plexus. Injury to this area can cause a wide range of ocular pathologies including pain, diplopia, ptosis, exophthalmos, and vision impairment or vision loss.

The splenius capitis, the longissimus capitis, and the posterior belly of the digastric muscle all attach to the mastoid process, a bony protuberance on the inferior border of the temporal bone. This landmark is also an attachment point for the sternocleidomastoid muscle. The styloid process of the temporal bone is directly anterior to the mastoid process, and is an attachment point for multiple ligaments and the styloglossus muscle, the stylohyoid muscle, and the stylopharyngeus muscle. The mandibular condyle and coronoid process are both part of the mandible and do not form any attachments to the muscles of the neck.

The correct answer is "subclavian artery." This is the correct answer because what this question is essentially asking is which of the listed blood vessels is closest to the clavicle, and most likely to be injured by a clavicular fracture based upon its proximity to the clavicle. Of the listed vessels, the subclavian artery is located closest to the clavicle (just inferior to the clavicle bone, as the name, sub-clavian implies). As such, if the clavicle breaks and a sharp fragment is formed, it would be most likely to injure the subclavian artery.

The internal and external carotid arteries, and jugular vein are located within the neck, but more deep and superior to the clavicle than the subclavian artery. The facial artery is located within the face and as such is located very superiorly to the clavicle bone and is unlikely to be involved by a clavicle fracture.

The bony ridge of the brow is formed by the superciliary processes (superciliary means super, or above, cilia, the lens of the eye). The orbit refers to the bony socket in which the eye sits. The glabella is the small depression between the eyebrows where the two superciliary arches meet. The coronoid process is part of the mandible, or jawbone, and unrelated to the brow.

The suture that joins the frontal bone to the parietal bones is the coronal suture. The sagittal suture joins the two parietal bones together along the sagittal plane of the skull. There are no sutures named after the frontal or parietal bones themselves.