A patient presents at the dentist’s office complaining of a toothache. The dentist observes severe decay of the tooth indicated by the arrow in the image. Before attempting to remove this decay and put in a filling, the dentist desensitizes this tooth by anesthetizing the nerve that passes through which one of the following spaces?  

A newborn male child presents with the following findings: a hypoplastic (small) mandible, malformation of the external and middle ear, cleft palate and faulty dentition. This is most likely due to a problem in the development of the:

A woman presents with a painful ulceration of her hard palate (see image). What is the location of the cell bodies of the sensory neurons that provide pain sensation (GSA) to the area of this ulceration?  

Given the following reduction potentials and reduction reactions, rank the following metals from most active(left) to least active(right) Au3+  + 3e  –> Au      +1.50V Fe3+  + 3e  –> Fe       -0.036V Pb2+  +2e  –> Pb        -0.13V Cu2+  + 2e  –>  Cu      + 0.34V

Taste from the anterior 2/3 of the tongue is conveyed by sensory neurons that have their cell bodies located in which one of the following structures?

Which one of the following structures develops from the third pharyngeal arch?

A patient presents with a fracture as shown in the x-ray. Which of the following deficits is this patient most likely to experience as a result of this injury?  

Abnormal swelling of the pharyngeal tonsils (adenoids) is often associated with an increased incidence of middle ear infections in children. These ear infections are most likely due to the adenoids blocking which one of the following?

A patient with chronic frontal sinusitis that is unresponsive to antibiotic therapy will undergo exploratory endoscopy of the frontal sinus. In order to gain access to the frontal sinus, the endoscope should be inserted into an opening in which one of the following spaces of the nasal cavity?

Lexan is a plastic used to make compact discs, eyeglass lenses and bullet-proof glass. One of the components used to make Lexan is phosgene(COCl2), an extremely poisonous gas. Phosgene decomposes by the equilibrium reaction: COCl2(g)   CO(g)  +  Cl2(g) The Kp of this reaction is 6.8 E-9 at 100C. If pure phosgene at a pressure of 2.5 atm decomposes, calculate the equilibrium pressures of each compound. Prove the 5% rule can be used.