The hyoid bone
A) attaches to tongue muscles.
B) is linked to the styloid process by a ligament.
C) is superior to the larynx.
D) does not directly articulate with other bones.
E) All of the answers are correct.
E
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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
Acetylcholine will cause the pupil of the eye to constrict. A drug acts on receptors for acetylcholine to cause the pupils of the eye to dilate. Nicotine does not bind to receptors in smooth muscle cells of the iris. Therefore, the drug which causes the pupils to dilate is a ________.
A. an adrenergic agent B. a muscarinic agent C. muscarinic blocking agent D. a nicotinic agent E. nicotinic blocking agent
A tubercle of a rib articulates with the
A) manubrium. B) costal facets of thoracic vertebrae. C) hyoid. D) xiphoid process. E) cervical and thoracic vertebrae.
Which wave on the electrocardiogram (ECG) corresponds with the ventricular filling phase of the cardiac cycle?
A) P wave B) S wave C) S-T segment D) T wave