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A 75-year-old male presents to the emergency department with a several-hour history of back pain in the interscapular region. His medical history includes a previous myocardial infarction (MI) several years ago, a history of cigarette smoking until the time of the MI, and hypertension that is well controlled with hydrochlorothiazide and lisinopril (Prinivil, Zestril). The patient appears anxious, but all pulses are intact. His blood pressure is 170/110 mm Hg and his pulse rate is 110 beats/min. An EKG shows evidence of an old inferior wall MI but no acute changes. A chest radiograph shows a widened mediastinum and a normal aortic arch, and CT of the chest shows a dissecting aneurysm of the descending aorta that is distal to the proximal abdominal aorta but does not involve the renal arteries. Which one of the following would be the most appropriate next step in the management of this patient?
If the resting membrane potential of a cell is -70mV and the thickness of the lipid bilayer is 4.5nm, what is the strength of the electric field applied across the membrane in V/cm ?
Assume you have a pure breeding mutant donkey that has very large teeth and very large ears. Both phenotypes are completely recessive to the normal phenotype.
Which molecule binds to the active site of an enzyme?
A person in the car accident shows the following symptoms: extreme paresis on right side, involving the arm and leg; reduction of the pain sensation on left side.
What kinds of things need to get into and out of a typical cell? How are these activities accomplished? Are there any diseases or adverse conditions directly related to problems of transport across membranes?
could both parents of a person with unattached earlobes have attached earlobes? why or why not?
Where does ADH act in the kidneys, and what does it do and what is the baroreceptor reflex - what organ synthesizes new erythrocytes and thrombocytes? Does warfarin affect thrombocytes or not?
Consider a cold winter day with air temperature of 5C and relative humidity of about 20% (moisture content 0.001g H2O/g dry air). A person waiting at a bus stop inhales at an average rate of 7g dry air/min and exhales air .
How can altering ice nucleation protein production yield a bacterial strain useful to agriculture? Explain the logic and how this works.
What would be the free energy for proton movement from the intermembrane space to the matrix in a mitochondria under the following sets of conditions (please put answers in kcal/mole, and assume room temperature of 25° C).
q1. imagine there are 25 different species of protists living in a tide pool. some of the species reproduce both
explain issues around access to care and prevention of illness as well as institutions that serve the aging healthy the
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