A 65-year-old man is admitted to the hospital with an exacer…

A 65-year-old man is admitted to the hospital with an exacerbation of heart failure. His oxygen saturation is 87% in the emergency department and he is emergently intubated. His chest x-ray shows pulmonary edema. Which agent should be used to treat him at this time?

In this image, the right image shows a squamo-columnar junct…

In this image, the right image shows a squamo-columnar junction.  If there were the Z-line, the left side of the image (F) would be located to the Z-line and would be the , whereas the right side of the image (S/K) would be to the Z-line and would be the .    If this right image were the pectinate/dentate line, the left side of the image (F) could be the , and the right side (S/K) would be the .   The tissue on the left image would be found in the , where the structures shown as V are called villi.  These villi are comprised of epithelium whose stem cells are found at the base or deepest part of the crypt, shown as .  Just deep to the crypt is the smooth muscle layer called muscle, followed by muscle and finally . 

The most proximal/oral region of the duodenum contains Brunn…

The most proximal/oral region of the duodenum contains Brunner’s glands which are and secrete a small amount of bicarbonate to protect the epithelium in this region of the small intestine from the gastric acid that exits the stomach via the .  Anatomically, this region of the duodenum is the portion of the duodenal flexure.  

During inhalation, the nucleus is responsible for stimulati…

During inhalation, the nucleus is responsible for stimulating the contraction of the prime mover for respiration, called the muscle.  The somatic motor neurons that innervate this muscle are located in the of the , and exit the spinal nerve within the of the spinal nerve to eventually find their way into the nerve.  This nerve is located between the of the L/R parietal pleural membranes, and the pericardium.