A pH of 7.5 is defined as:
Acidosis
Alkalemia
Acidemia
Alkalosis
The Correct Answer is D
Choice A reason: Acidosis refers to a condition in which there is an excess of acid in the body, leading to a lower-than-normal pH. Typically, this means a pH level below 7.35. Acidosis can result from either an accumulation of acids or a loss of bicarbonate and can be classified into two types: metabolic and respiratory acidosis. This condition is the opposite of alkalosis.
Choice B reason: Alkalemia is a condition where the blood pH is higher than normal, indicating alkalinity. Alkalemia itself is not the correct term for the process or state but rather describes the elevated pH found in the blood. Alkalemia is typically diagnosed when blood pH exceeds 7.45, and it is indicative of the underlying process of alkalosis.
Choice C reason: Acidemia is characterized by an increased hydrogen ion concentration in the blood, leading to a lower-than-normal pH (below 7.35). Similar to acidosis, acidemia results from either an increase in acid production or a decrease in bicarbonate levels. It reflects the actual state of the blood pH rather than the process leading to the condition.
Choice D reason: Alkalosis refers to a condition where the body fluids have excess base (alkali) or a loss of acid, causing the pH to rise above the normal range. A pH of 7.5 falls into the category of alkalosis since it is above the normal pH range of 7.35-7.45. Alkalosis can be caused by factors such as excessive intake of alkaline substances, prolonged vomiting, or hyperventilation. It is essential to distinguish between the process (alkalosis) and the blood condition (alkalemia) to understand the physiological changes accurately.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Peristalsis is the process by which smooth muscle fibers in the walls of the ureters contract rhythmically to propel urine from the kidneys to the bladder. This coordinated movement involves a wave-like series of contractions and relaxations, ensuring that urine is efficiently transported along the ureters, even against gravity. Peristalsis is a crucial mechanism for maintaining the flow of urine and preventing backflow into the kidneys.
Choice B reason: Mass movement refers to strong, coordinated contractions in the colon that move fecal matter toward the rectum. This process is associated with the large intestine and is not involved in the movement of urine through the ureters.
Choice C reason: Segmental contractions are localized contractions in the intestines that help mix and propel intestinal contents. They are not the primary mechanism for moving urine through the ureters.
Choice D reason: Tetany refers to involuntary muscle spasms or contractions, usually caused by low calcium levels or other electrolyte imbalances. It is not a normal physiological process for propelling urine through the ureters.
Correct Answer is C
Explanation
Choice A reason: Reversible deviant cells do not accurately describe neoplasia. Neoplasia involves the uncontrolled and irreversible growth of abnormal cells. While some deviant cell changes can be reversible, neoplasia specifically refers to irreversible changes that lead to tumor formation.
Choice B reason: Neoplasia does not adhere to the genetic controls placed on cellular proliferation and differentiation. In fact, the hallmark of neoplasia is the loss of these regulatory mechanisms, leading to uncontrolled cell growth and differentiation.
Choice C reason: Neoplasia indeed alters cellular proliferation and differentiation. This alteration is due to genetic mutations and other changes that lead to the loss of normal growth control. The result is the formation of tumors, which can be benign or malignant.
Choice D reason: Controlled and regulated cells do not describe neoplasia. Neoplastic cells grow and proliferate without the normal regulatory signals that control cell growth and differentiation. This uncontrolled growth is what characterizes neoplasia.
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