A 55-year-old man is taken to a hospital emergency department by helicopter following a rural automobile accident that occurred approximately 3 hours ago. The man, who is having difficulty speaking to the EMTs, is clutching his chest. Upon the man’s arrival, the emergency room physician orders a cardiac marker panel that includes serum CK, CK-MB, troponin, and myoglobin. The CK-MB value was less than 2% of total CK, which was slightly increased; troponin was normal; and the myoglobin was increased 3 times the upper limit of normal. The physician has asked the laboratory to explain the findings. Which of the following represents the lab’s explanation?

An individual is brought to the emergency department of a local hospital with signs of narcotic overdose and respiratory depression (inability to expel CO2). What acid-base status would this individual have?

Name two characteristics of an ideal cardiac marker. (can’t use length of time present after cardiac episode)

A cardiac marker that increases progressively with increasing severity of disease and is not increased (or decreased) in conditions that mimic congestive heart failure is:

The enzyme, which exists chiefly in skeletal muscle, heart, and brain, is grossly elevated in active muscular dystrophy, and rises early in myocardial infarction is:

Which of the following does  not describe the function(s) of the skeletal system?

A force acting on a mass directed 300 with respect to the positive x-axis has a magnitude of 150 N. A second force acting on the same mass is directed 2400 with respect to the positive x-axis and has a magnitude of 125 N. The resultant net force on the mass is pointing in the 

How many  ATP are produced from a single round of glycolysis?

Which of the following is the threshold potential of a general neuron?

Which of these processes moves a solute from high to low concentration?