Which of the following has no effect on oxyhemoglobin dissociation?
A) Fever
B) Low pH
C) Thyroid hormone
D) Epinephrine
E) Erythrocyte count
E
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The pitch of a sound wave is related to its
A) amplitude. B) frequency. C) decibels. D) duration.
Which of the following is an example of a synchondrosis?
A) an intervertebral disc situated between the vertebrae of the spinal column B) the pubic symphysis and the two surrounding pubic bones of the pelvic girdle C) the coronal suture situated between the frontal bone and parietal bone D) an epiphyseal plate found between the shaft (diaphysis) and the end (epiphysis) of a long bone
A 19-year-old woman fell from a second story window and landed on her head. She is unconscious with a blood pressure of 148/94 mm Hg, heart rate of 58 beats/min, and irregular respirations of 8 breaths/min. Further assessment reveals blood draining from her nose and bilaterally dilated pupils that are slow to react. In addition to employing full spinal precautions, the MOST appropriate treatment for this patient involves:
A) hyperventilating her with a bag-mask device at a rate of 20 breaths/min, starting two large-bore IV lines, applying a cardiac monitor, administering 5 mg of Valium to prevent seizures, and transporting to a trauma center. B) preoxygenating her with a bag-mask device and 100% oxygen for 2 to 3 minutes, performing nasotracheal intubation, transporting at once, starting at least one large-bore IV line en route, and obtaining her Glasgow Coma Scale score. C) intubating her trachea after preoxygenating her for 2 to 3 minutes with a bag-mask device, transporting immediately, starting at least one large-bore IV en route, applying a cardiac monitor, and performing frequent neurologic assessments. D) applying oxygen via nonrebreathing mask, covering her with blankets, starting an IV of normal saline set to keep the vein open, applying a cardiac monitor, initiating transport, and monitoring her pupils while en route to the hospital
Receptors are parts of the nervous system that allow it to
A. collect information. B. initiate responses to information. C. conduct impulses to muscles. D. process information.