What does the term dilate mean?

Correct Answer: D

Rationale: The correct answer is D: Widen or open. Dilation refers to the process of expanding or enlarging an object. When an object is dilated, its size increases but its shape remains the same. This term is commonly used in geometry to describe the transformation of stretching or shrinking a shape. In contrast, choices A, B, and C are incorrect because they describe actions that involve reducing the size or changing the speed of an object, which is not the definition of dilation.

Correct Answer: C

Rationale: The correct answer is C: Continuous bladder irrigation. This procedure involves continuously flushing the bladder with a sterile solution to prevent blood clot formation and maintain catheter patency post-surgery. It helps in monitoring urine output and preventing urinary retention. A: Indwelling catheter care involves routine maintenance of the catheter but does not involve continuous flushing. B: Straight catheterization is a one-time procedure to empty the bladder, not for continuous flushing. D: Bladder retraining is a process to improve bladder control, not related to post-operative catheter care.

Correct Answer: C

Rationale: The correct answer is C: Gangrene. Gangrene refers to the death of body tissue due to a lack of blood supply or infection. Eczema (choice A) is a skin condition characterized by inflammation and itching, not tissue death. Hematoma (choice B) is a localized collection of blood outside blood vessels and does not involve tissue death. Psoriasis (choice D) is a chronic skin condition characterized by red, itchy, and scaly patches, but it does not involve tissue death. Therefore, the correct choice is Gangrene as it specifically refers to the death of tissue.

Correct Answer: B

Rationale: The correct answer is B: Trachea. The trachea is an air passage that connects the pharynx to the bronchi, allowing air to pass into the lungs. The epiglottis (A) is a flap of tissue that covers the trachea during swallowing to prevent food from entering the airway. Sphincter (C) refers to a ring-like muscle that controls the opening and closing of a passage, not specifically related to the airway. Ventricle (D) is a term used to describe a chamber within an organ, such as the heart, and is not part of the respiratory system.

Correct Answer: C

Rationale: The correct answer is C: Pupil. The pupil is the opening in the center of the iris through which light enters the eye. It dilates or constricts to regulate the amount of light entering the eye, thus adjusting to different lighting conditions. The other choices are incorrect because: A: Sclera is the tough, white outer layer of the eyeball that helps maintain the eye's shape. B: Iris is the colored part of the eye that controls the size of the pupil. D: Cornea is the transparent outer covering of the eye that helps focus light onto the retina.