One function of the blood is to

Correct Answer: C

Rationale: The correct answer is C: Control pH levels. Blood helps maintain the body's pH balance within a specific range, typically around 7.4, which is crucial for proper bodily functions. It does this by acting as a buffer, regulating the concentration of acids and bases in the body. In contrast, choice A is incorrect because blood actually transports oxygen to cells. Choice B is incorrect as blood vessel size is mainly controlled by the nervous system and hormones. Lastly, choice D is incorrect as blood does not directly regulate body temperature, which is primarily controlled by the hypothalamus in the brain.

Correct Answer: D

Rationale: The correct answer is D: Metabolism and growth. Thyroid hormones, such as T3 and T4, play a crucial role in regulating metabolism by influencing the body's energy production and consumption. They also help in the growth and development of various tissues and organs. This is supported by scientific research and physiological understanding. Explanation for other choices: A: Heart rate and respiration - While thyroid hormones can indirectly influence heart rate and respiration through their effects on metabolism, they are not the primary regulators of these functions. B: Bile production and potassium - Thyroid hormones do not have a direct role in regulating bile production or potassium levels in the body. C: Kidney and liver function - While thyroid hormones can affect kidney and liver function to some extent, their primary role lies in metabolism and growth regulation.

Correct Answer: D

Rationale: The correct answer is D, sharing a drug needle with an infected person. HIV can be transmitted through blood-to-blood contact, and sharing needles can lead to direct exchange of infected blood. Kissing, shaking hands, or sharing utensils do not involve direct blood contact, making them unlikely modes of HIV transmission.

Correct Answer: D

Rationale: The correct answer is D: Supine position. When using a pulse oximetry device, the supine position can lead to inaccurate readings due to reduced blood flow to the extremities. This position can affect the accuracy of oxygen saturation measurements. It is important to keep the patient in an upright or semi-upright position for accurate readings. Choices A, B, and C are incorrect because excessive fluids, loose tape, or avoiding certain actions are not directly related to the accuracy of pulse oximetry readings.

Correct Answer: C

Rationale: The correct answer is C: Consider a compromise. Compromise is essential in conflict resolution as it allows both parties to find a middle ground and reach a mutually beneficial solution. It promotes understanding, cooperation, and fosters positive relationships. Never meeting halfway (A) can lead to a deadlock in negotiations. Challenging policy (B) may escalate the conflict further. Antagonizing coworkers (D) will only worsen the situation and hinder any chances of resolving the conflict amicably. In summary, choosing a compromise is the most effective approach as it promotes cooperation and understanding among conflicting parties.