lq2006
Forum Elite
Topics: 43
Posts: 382
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1>.Addition of norepinephrine to a solution bathing an isolated cardiac papillary muscle leads to an increase in the amount of work performed by the muscle at a given load, without changing the muscle's initial length. The increase in work done by the muscle at its new steady-state level is the result of an increase in which of the following?
A ) Overlap of thick and thin filaments at the initial length
B ) Sarcoplasmic Ca2+ concentration while the load is lifted
C ) Sarcoplasmic phosphocreatine concentration
D ) Stiffness of the series elastic elements
2>.A 27-year-old man has a painful, infected abscess on the posterior aspect of the scrotum. Which of the following lymph nodes is most likely to be tender and swollen?
A ) External iliac
B ) Internal iliac
C ) Lumbar (aortic)
D ) Sacral
E ) Superficial inguinal
3>.Which of the following noradrenergic receptor classes is found in both presynaptic and postsynaptic terminals?
A ) α1
B ) α2
C ) β1
D ) β2
E ) β3
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| drhouse
Forum Senior
Topics: 21
Posts: 192
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i m wondering, r these really qs for ck??
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everybody can do it.... its just matter of time
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| dr9576
Forum Newbie
Topics: 4
Posts: 42
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1 and 3 are step1 stuffs!
For 2, the answer I thnk, is C! Because the scrotal lymph nodes metastase to paraaortic first.
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| peter90036
Forum Elite
Topics: 28
Posts: 315
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you can get a couple step 1 Qs in 2ck exam, dont know if scored but they're there.
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| mikky
Forum Elite
Topics: 15
Posts: 338
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third one a???
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srama nee ayutham aithe vijayam nee banisa avuthundi
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| RX 135
tormenta
Topics: 23
Posts: 522
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b,c,a
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