The term __________ pertains to the way a person holds and positions his body.

Correct Answer: C

Rationale: The correct answer is C: Posture. Posture refers to the way a person holds and positions their body. It encompasses alignment, balance, and positioning of body parts. Pronation (A) is the rotation of the forearm or foot inward. Postpartum (B) is the period after childbirth. Projection (D) refers to attributing one's own unacceptable feelings to others. Therefore, C is the most fitting choice as it directly relates to the description provided in the question.

Correct Answer: C

Rationale: The correct answer is C: Biology. Biology is the study of all life forms, including their structure, function, growth, and evolution. Anatomy (choice A) focuses on the structure of living organisms, while Physiology (choice B) studies the functions of living organisms. Geology (choice D) is the study of the Earth's physical structure and substance, not life forms. Therefore, the correct choice is C as it encompasses the study of all life forms.

Correct Answer: A

Rationale: The correct answer is A because cleaning at least two inches of the catheter near the body helps prevent infection at the insertion site. This step ensures proper hygiene and reduces the risk of catheter-related complications. Rinsing the catheter (choice B) is not as effective as cleaning. Closing the clamp without cleaning (choice C) can lead to bacterial growth. Allowing the clamp to touch the graduate (choice D) can introduce contaminants. Cleaning the catheter near the body is the most essential step in catheter care.

Correct Answer: C

Rationale: The correct answer is C: Chickenpox in a person who has never had it. The shingles virus, also known as herpes zoster, is caused by the reactivation of the varicella-zoster virus, which initially causes chickenpox. When the virus reactivates, it can lead to a painful rash and blisters, known as shingles, particularly in individuals who have had chickenpox before. Scabs due to tiny mites (A), abrasion due to friction (B), and severe fungal infections (D) are unrelated to the shingles virus and do not align with its characteristic symptoms.

Correct Answer: C

Rationale: The correct answer is C: Carbon dioxide. The lungs exchange oxygen from the air we breathe with carbon dioxide produced by our cells. Oxygen is taken up by red blood cells in the lungs and transported to the body tissues, while carbon dioxide is released from the tissues into the bloodstream and then exhaled through the lungs. Nitrogen (choice A) is not involved in the gas exchange process. Hydrogen (choice B) is not a primary gas exchanged during respiration. Carbon monoxide (choice D) is a toxic gas that can interfere with oxygen transport but is not a normal part of the respiratory exchange process.