__________ is a sexually-transmitted infection that includes symptoms such as itching swollen testesor vaginal bleeding.

Correct Answer: D

Rationale: Step-by-step rationale for why Trichomoniasis (D) is the correct answer: 1. Trichomoniasis is a sexually-transmitted infection caused by the parasite Trichomonas vaginalis. 2. Symptoms can include itching, swollen genitals, and vaginal bleeding. 3. Gonorrhea (A) typically presents with discharge and painful urination, not itching and swelling. 4. Vaginitis (B) is a general term for inflammation of the vagina and may not specifically include these symptoms. 5. Chlamydia (C) commonly causes discharge and pain, but not necessarily itching and swelling. Summary: Trichomoniasis is the correct answer as it matches the symptoms provided, while the other choices do not fully align with the symptoms described.

Correct Answer: B

Rationale: The correct answer is B: Bursae. Bursae are small sacs filled with fluid that help reduce friction between bones, muscles, and tendons near joints. They act as cushions and lubricate the joint, aiding in smooth movement. Tendonitis (A) is inflammation of a tendon, not fluid-filled sacs. Sepsis (C) is a severe infection in the bloodstream, not related to joint structures. Phlebitis (D) is inflammation of a vein, not associated with joint sacs. Therefore, Bursae is the correct answer.

Correct Answer: C

Rationale: The correct answer is C: Hemianopsia. "Hemi" means half, and "anopsia" means blindness. Therefore, hemianopsia refers to the loss of vision in half of the visual field. Hyperopia (A) is farsightedness, myopia (B) is nearsightedness, and macular degeneration (D) is a condition affecting the macula in the retina, not specifically related to loss of vision in half of the visual field.

Correct Answer: C

Rationale: The correct answer is C: Nonspecific immunity. At birth, infants possess nonspecific immunity, also known as innate immunity, which provides immediate protection against a wide range of pathogens without prior exposure. This type of immunity includes physical barriers like the skin, as well as cellular and molecular components such as phagocytes and natural killer cells. Nonspecific immunity is not acquired through deliberate exposure to antigens, distinguishing it from specific immunity (choice D). Active immunity (choice A) requires the body to produce antibodies in response to an antigen, while passive immunity (choice B) involves receiving pre-formed antibodies. Therefore, the correct answer is nonspecific immunity, as it is present from birth and provides immediate protection.

Correct Answer: C

Rationale: The correct answer is C: Sepsis. Sepsis is a serious illness caused by the body's response to an infection, often bacterial. It can lead to organ failure and even death if not treated promptly. Gingivitis (A) is a gum disease, Phlebitis (B) is inflammation of a vein, and Diverticulosis (D) is a condition in the colon. These conditions are not typically caused by bacterial infections and do not result in the same life-threatening complications as sepsis.