The third stage of labor
a. involves dilation of the cervix to 10 cm.
b. refers to the actual birth of the baby.
c. occurs when the entire uterine contents shift downward and the fetus's head is positioned against the cervix.
d. involves delivery of the placenta.
e. is characterized by rupture of the membranes surrounding the amniotic sac.
D
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Lymph transport involves all of the following EXCEPT ________
A) lymph capillary minivalve action B) milking action of active muscle fibers C) thorax pressure changes during breathing D) smooth muscle contraction in the lymph capillary walls
Which of the following is true regarding the parallel elastic component (PEC) of muscular elasticity?
A. This component is provided by the muscle membranes. B. This component provides resistance when a muscle is passively stretched. C. This is the component primarily responsible for the elasticity of muscle. D. both A and B E. all of the above
When a catecholamine or peptide hormone binds to receptors on the surface of a cell,
A) a second messenger appears in the cytoplasm. B) the cell becomes inactive. C) the hormone is transported to the nucleus where it alters the activity of DNA. D) the cell membrane becomes less permeable. E) None of the answers are correct.
When administering CPAP therapy to a patient, it is important to remember that:
A) acute symptomatic bradycardia has been directly linked to CPAP therapy. B) SpO2 of 100% must be achieved as quickly as possible. C) the increased intrathoracic pressure caused by CPAP can result in hypotension. D) the head straps must be secured immediately in order to achieve an adequate seal.