Direct percussion

Correct Answer: B

Rationale: The correct answer is B because direct percussion involves striking one finger with another fingertip. This technique is commonly used in physical examinations to assess reflexes. Choice A is incorrect as it refers to fingertip striking a surface, not a finger. Choices C and D are blank, but they are incorrect as they do not provide relevant information about direct percussion.

Correct Answer: B

Rationale: The correct answer is B: Middle ear problem. Conductive hearing loss typically results from issues in the middle ear that prevent sound from reaching the inner ear effectively. Common causes include ear infections, fluid buildup, or problems with the ear bones. The inner ear (choice A) is responsible for processing sound signals, not conducting them. Choices C and D are likely left blank as they do not relate to conductive hearing loss.

Correct Answer: B

Rationale: The correct answer is B: Pull the door going inside the room. This is because pulling the door prevents the potential spread of TB germs from the patient's room to the hallway or other areas. By pulling the door, the negative pressure in the room helps contain the germs inside. Pushing the door would create a higher pressure inside the room, increasing the risk of germs escaping. Choice A is incorrect because pushing the door would not maintain containment of the TB germs. Choices C and D are left blank as they are not relevant to the rationale provided.

Correct Answer: B

Rationale: The correct answer is B because snoring often occurs when sleeping on the back (supine position), causing the tongue and soft tissues to collapse towards the back of the throat, obstructing the airway. By lessening the time spent in the supine position or using positional therapy devices to prevent sleeping on the back, the likelihood of snoring can be reduced. Option A, sleeping flat, does not address the specific issue of sleeping on the back. Options C and D are incomplete, and their relevance to snoring prevention is unclear.

Correct Answer: A

Rationale: The sagittal suture runs from the front to the back of the skull, dividing it into left and right halves. This is its primary function, aligning with the midline of the skull. Choice A is correct because it accurately describes the anatomical division created by the sagittal suture. Choices B, C, and D are incorrect because they do not accurately represent the function of the sagittal suture.