Which hormone promotes the formation of channels in the mucus of the cervical os to facilitate sperm movement into the uterus?
a. LH
b. FSH
c. Progesterone
d. Estrogen
ANS: D
Increasing estrogen levels apparently contribute to the development of tiny channels in cervical mucus, providing access for sperm into the interior of the uterus. Access for sperm movement is not associated with LH, FSH, or progesterone.
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Choose the correct statement regarding chromogenic analysis in hemostasis testing from the following choices
a. Chromogenic analysis depends on the selected analyte's ability to cleave a chromophore. b. Chromogenic analysis is not subject to preanalytical problems because of its mechanism of clot detection. c. There is no difference between chromogenic analysis and electromechanical detection. d. Chromogenic analysis depends on the optical detection of ball movement through a steel tube as a clot forms.
The therapist is mechanically ventilating a lung parenchyma injury patient with ARDS at an I:E ratio of 1:1 with a respiratory rate of 18 breaths/minute. What condition is likely to occur from this situation?
A. alveolar overdistention B. dynamic hyperinflation C. parenchymal lung injury D. ventilator induced diaphragmatic dysfunction