52 yo man is brought to er 30min after the onset of chest pain and shortness of breath. he had played tennis all day and he does not remember how much fluid he had consumed. his temperature is 36.7 oc, pulse 122min, respirations 28min and bp 90/50 mmhg. pe shows dry skin and decreased capillary refill. an ecg and evaluation of cardiac enzymes show no abnormalities. which of the following findings in the nephron best describes the tubular osmolarity, compared with serum in this patient?
pt //macula densa //medullary collection ductiso, hypo,

Why is a lunch consisting of pizza, fruit, and salad a better choice than a lunch with the same number of calories from pizza alone? a)both lunches provide the same amount of energy but the lunch of pizza, salad, and fruit provides more nutrients. b)both lunches provide the same amount of nutrients but the lunch of pizza, salad, and fruit provides more energy. c)both lunches are healthful but the lunch of pizza, salad, and fruit provides more energy for metabolism. d)both lunches are healthful but the lunch of pizza, salad, and fruit is likely to have a higher fat content.

What is a common risk associated with alcohol?

Which of the following best reflects what we know about how the flu virus moves between species? a) the flu virus in a pig is mutated and replicated in alternate arrangements so that humans who eat the pig products can be infected.b) a flu virus from a human epidemic or pandemic infects birds; the birds replicate the virus differently and then pass it back to humans.c) an influenza virus gains new sequences of dna from another virus, such as a herpesvirus; this enables it to be transmitted to a human host.d) an animal such as a pig is infected with more than one virus, genetic recombination occurs, the new virus mutates, the virus is passed to a new species such as a bird, and the virus mutates again and can now be transmitted to humans.