A 75 kg (165 lb) patient with acute lung injury is being mechanically ventilated at the following settings: VC, A/C; VT 300 mL, respiratory rate 16/min, FIO2 0.50 and PEEP +5 cm H2O. The following arterial blood gas results are obtained: pH 7.30, PaCO2 58 torr, PaO2 79 torr, HCO3- 28 mEq/L. The patient's condition should be described as

Which of the following statements about stab wounds is TRUE?

A) The presence of defense wounds decreases the likelihood of trauma to the neck, thorax, and abdomen. B) Damage is usually limited to physical injury caused by direct contact between the blade and the victim's tissue. C) The size and shape of the weapon allow precise prediction of the injury. D) Stab wounds by female attackers are seldom lethal.

Which of the following is the hard, dense bone that surrounds the marrow cavity?

a. cancellous b. cortical c. cranial d. cuboid