ATI RN
Multiple Choice Questions on Cells Tissues and Organs Questions
Question 1 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 2 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 3 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+.
Question 4 of 5
Which muscles act involuntarily?
Correct Answer: B
Rationale: The muscles which are not under control, are involuntary muscle, for example Smooth or unstrained muscles and cardiac muscles.
Question 5 of 5
The muscular tissue which functions through-out the life continuously without fatigue is
Correct Answer: B
Rationale: Cardiac muscles are in the wall of the heart and large veins like pulmonary veins and vena cava. Cardiac muscle fibres have blood vessels so never get fatigued.