The majority of carbon dioxide transported in the bloodstream is bound to hemoglobin.
a. true
b. false
Ans: b. false
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Which of the following factors influence cell membrane permeability?
A. Phospholipid composition of the membrane B. Ionic charge along the membrane C. Presence or absence of transport proteins D. Molecule size E. All of the choices are correct.
Answer the following questions true (T) or false (F)
1. The eye contains two cavities situated within the anterior chamber. 2. An astigmatism is an irregular curvature of the cornea or lens which causes rays of light to refract unevenly. 3. Rods are concentrated in the fovea centralis while cones are absent from this region of the retina.
Assume a person has a blood pressure recording of 125/77
a. What is the systolic pressure?____________________ b. What is the diastolic pressure?____________________ c. What is the pulse pressure?____________________ d. What is the mean arterial pressure?____________________ e. Would any sound be heard when the pressure in an external cuff around the arm was 130 mm Hg? ____________________ f. Would any sound be heard when cuff pressure was 118 mm Hg? ____________________ g. Would any sound be heard when cuff pressure was 75 mm Hg? ____________________
What is the first branch off of the aortic arch?
A) left common carotid artery B) right common carotid artery C) right subclavian artery D) brachiocephalic trunk