Hemoglobin
a. combines preferentially with O2 over any other substance.
b. when combined with carbon dioxide is known as carboxyhemoglobin.
c. plays a critical role in determining the amount of O2 that is exchanged between alveoli and blood, because it acts as a storage depot, removing dissolved O2 from the blood thereby keeping PO2 low and allowing net diffusion of O2 to continue until the hemoglobin is completely saturated.
d. both (a) and (b) above.
e. all of these answers
C
You might also like to view...
A loop that enhances a signal to complete a process with a clear cutoff point is a ________ feedback system.
A. single-effector B. positive C. servo D. negative
A cat presents to a clinic with difficulty breathing, lethargy, and cyanosis. The veterinarian auscultated the thoracic cavity and politely asked to have a radiograph taken of the thorax. Dx: pleural effusion. A thoracocentesis was performed and 300 cc of fluid was aspirated. Rx: Bronchodilator BID. BID is an abbreviation used in prescription writing that means:
A) (one) bolus daily B) best in a drench C) daily D) twice daily E) three time daily
The ________ artery carries blood from the subclavian to the brachial artery
A) ulnar B) brachiocephalic C) radial D) axillary
The ________ can be easily palpated between the clavicles
A) costal groove B) body of the sternum C) costal cartilage D) xiphoid process E) suprasternal notch