A resident who is edentulous

Correct Answer: A

Rationale: The correct answer is A: Lacks teeth. Edentulous means lacking teeth, so a resident who is edentulous does not have any natural teeth. This term specifically refers to the absence of teeth and not just wearing dentures (Choice C). Choices B and D are incorrect because bad breath and tartar deposits on the teeth are not necessarily related to being edentulous. The rationale is based on the definition and meaning of the term "edentulous," which directly indicates the absence of teeth.

Correct Answer: A

Rationale: Correct Answer: A: Social interaction is an important part of mealtime. Rationale: Social interaction during mealtime promotes a sense of community and well-being among residents. It can enhance their overall dining experience and help combat feelings of loneliness or isolation. Engaging in conversations can also stimulate appetite and improve digestion. Summary: B: Incorrect. Residents should be encouraged to participate in mealtime activities to promote independence and autonomy. C: Incorrect. Mealtime is primarily for residents to enjoy their meals, and nursing assistants should focus on providing care and assistance. D: Incorrect. While it's important to address residents' concerns about their meals, it's not necessary to always point out unappetizing aspects.

Correct Answer: A

Rationale: The correct answer is A: Occult. Hidden or occult blood refers to blood that is not visible to the naked eye but can be detected through a microscope or chemical test. This term is commonly used in medical settings to describe blood found in stool that is not visibly apparent. The other choices, B: Hemoccult, C: Toxic, and D: Pathogenic, are incorrect as they do not specifically refer to hidden blood in stool. "Hemoccult" is a specific brand name for a fecal occult blood test, "Toxic" does not relate to blood presence, and "Pathogenic" pertains to disease-causing organisms rather than blood detection.

Correct Answer: D

Rationale: The correct answer is D: Contact of the mouth with the genitals. This is because sexually transmitted infections (STIs) are primarily transmitted through direct contact with infected genital fluids or skin-to-skin contact in the genital area. Kissing (choice A), contact of hands with the breasts (choice B), and holding hands (choice C) do not typically result in the transmission of STIs as they do not involve direct contact with infected genital areas or fluids. Therefore, choice D is the only option that aligns with how STIs are commonly transmitted through sexual contact.

Correct Answer: C

Rationale: The correct answer is C: Plasma. Plasma makes up about 55% of blood volume and consists of water, proteins, electrolytes, hormones, and waste products. It carries nutrients, gases, and waste products throughout the body. Erythrocytes (A) are red blood cells and make up about 45% of blood volume. Leukocytes (B) are white blood cells, which only constitute a small percentage of blood volume. Platelets (D) are cell fragments involved in blood clotting and make up a very small portion of blood volume. Plasma is the correct answer because it is the main component of blood by volume and serves various essential functions.