ATI RN
Multiple Choice Questions on Cells Tissues and Organs Questions 
            
        Question 1 of 5
Which type of epithelial tissue is found lining the lungs and blood vessels?
Correct Answer: A
Rationale: Simple squamous epithelium, with its thin, flat cells, lines the lungs and blood vessels for efficient gas exchange.
Question 2 of 5
Blood
Correct Answer: A
Rationale: Blood is ~7-8% of body weight; it's a lower percentage in obese individuals due to higher fat mass.
Question 3 of 5
An appropriate dilution indicator for measuring
Correct Answer: C
Rationale: Inulin measures ECF volume as it's confined to extracellular spaces; D2O measures TBW, not ICF directly.
Question 4 of 5
A raised blood pH and bicarbonate level is consistent with
Correct Answer: A
Rationale: Persistent vomiting loses H+, raising pH and HCO3- (metabolic alkalosis).
Question 5 of 5
A high blood potassium level (hyperkalaemia)
Correct Answer: C
Rationale: High K+ disrupts cardiac membrane potential, risking arrhythmias; renal failure and crush injuries elevate K+.
