Which of the following is an unpaired vessel responsible for delivery of oxygen rich blood?

  How many different sister chromatids are represented by the above figure?

  How many homologs (total) are indicated by the figure?

Your patient is presenting for coronary artery bypass grafting. Post-induction hemodynamics include: BP 120/80, HR 78, SVR 1200 dynes/sec, cardiac output 5 L/min, SpO2 96%.  ABG: pH = 7.34, PaCO2 = 32, PaO2 = 102, HCO3- = 22, BE +0.  Hgb 9.1, Hct 27. Calculate this patient’s DO2 (arterial oxygen delivery). [Use 1.39 in CaO2 equation for oxygen combining capacity]. 

Cardiac membrane potential depolarization occurs at: 

Bonus 1 point. A 76-year-old man suffers a stroke that severely impairs his speech. The area of the brain that is most likely damaged is:

Bonus: 1 point. A 73-year-old man suffers a stroke that leaves him unable to comprehend written and spoken language, although he can still speak. The areas of the brain that was MOST likely damaged by the stroke is:

Bonus: 1 point. Which of the following types of memory is thought to require structural changes in the brain?

List ONE Occupational Exposure (or Lifestyle) that was historically identified as a cancer hazard. 

The estimation or calculation based on actual experimental data concerning doses of Compound X that may be hazardous usually requires determination of an exposure level referred to as the ____________________.