The world perceived by Matteo is different from the world perceived by most; he can only see black, white, or shades of gray. What can we conclude about Matteo? a. His retina is void of at least one type of rod. b. His retina is void of at least two types of cones. c. His retina is void of at least one type of cone. d. His retina is void of at least two types of rods.

Harold, a fifty-eight year old grocery store manager, had recently been waking up in the middle of the night with abdominal pain. this was happening several nights a week. he was also experiencing occasional discomfort in the middle of the afternoon. harold decided to schedule an appointment with his physician. the doctor listened as harold described his symptoms and then asked harold some questions. he noted that harold's appetite had suffered as a result of the pain he was experiencing and as a result of the fear that what he was eating may be responsible for the pain. otherwise, harold seemed fine. the doctor referred harold to a physician that specialized in internal medicine and had harold make an appointment for a procedure called an endoscopy. the endoscopy was performed at a hospital later that week. during the procedure, a long, thin tube was inserted into harold's mouth and directed into his digestive tract. the end of the tube was equipped with a light source and a small camera which allowed the doctor to observe the interior of harold's stomach. the endoscope was also equipped with a small claw-like structure that the doctor could use in order to obtain a small tissue sample from the lining of harold's stomach, if required. the endoscopy revealed that harold had a peptic ulcer. analysis of a tissue sample taken from the site showed that harold also had an infection that was caused by helicobacterpylori bacteria. the doctor who performed the endoscopy gave harold prescriptions for two different antibiotics and a medication that would decrease the secretion of stomach acid. the doctor also instructed harold to schedule an appointment for another endoscopy procedure in 6 months. 1. list the subjective findings in this case study. 2. what is an endoscopy? (2 points) what is a biopsy? 3. how was a biopsy performed on harold? 4. differentiate between gastric and duodenal ulcers by location. 5. what role does h. pylori play in the formation of peptic ulcers? 6. define occult and frank blood. (4 points) what is a guaiac test? 7. how can peptic ulcers cause bleeding? 8. why were antibiotics prescribed? 9. why would a medication that would decrease the secretion of stomach acid be beneficial?

You are caring for a 52-year- old woman who has been prescribed a major antipsychotic (neuroleptic) agent. after explaining the potential side effect, the client refuses to take the medication. how would you feel about taking a major antipsychotic (neuroleptic) agent, realizing the many side effects that these medications can cause? for psychoactive medications to be effective, client adherence is essential. how would you respond to a client who continually fails to follow his or her medication regimen?

Aperson has been born with a mutation that results in a deficiency in the production of mhc i by all of their cells. how might this deficiency affect a person immunologically?