A first time dislocation should be considered and treated as a fracture.

All of the following can cause retinopathies EXCEPT:

A) Microaneurysms. B) Hypertension. C) Syphilis. D) HIV.

The last cartilage ring on the trachea before it bifurcates into the right and left primary bronchi is known as the:

hilum carina mediastinum thyroid cartilage