In cellular respiration,
A) cells breathe, or take in, O2 and give off CO2.
B) energy is absorbed from glucose and is transferred to CO2.
C) mitochondria release glucose molecules.
D) energy is released from molecules and is transferred to other molecules.
D
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During muscle contraction, myosin cross bridges attach to active sites of:
A) myosin filaments B) actin filaments C) Z lines D) thick filaments E) the H zone
State two ways in which endocrine glands and exocrine glands differ.
What will be an ideal response?
With age, epithelial tissues
A. increase in mass. B. lose resiliency but gain pliability. C. lose their blood supply. D. become thinner. E. become more flexible.
You are transporting a conscious middle-aged man with anterior neck trauma. He is on high-flow oxygen, has spinal precautions in place, and has a large-bore IV line of normal saline in place. When you reassess his vital signs, you note that his blood pressure is 90/64 mm Hg, his pulse rate is 120 beats/min, and his respirations are 22 breaths/min with adequate depth. You should:
A) begin assisting his ventilations with a bag-mask device, rapidly infuse 2 L of IV fluid, and reassess. B) keep the patient warm and infuse enough isotonic crystalloid solution to maintain adequate perfusion. C) elevate his legs, apply a blanket, and administer IV fluid boluses until his heart rate is within a normal range. D) start a second IV line and administer crystalloid IV fluids until his systolic blood pressure is at least 100 mm Hg.