The nurse is reviewing information in anticipation of providing education to her patient. What is an accurate statement about ovarian cancer?

Correct Answer: B

Rationale: The correct answer is B because the symptoms of ovarian cancer are often vague and nonspecific, leading to challenges in early detection. Symptoms such as bloating, pelvic pain, difficulty eating, and frequent urination can be mistaken for other conditions. This lack of specific symptoms makes it difficult for individuals to recognize the signs of ovarian cancer. Choice A is incorrect because the symptoms are not easy to detect. Choice C is incorrect as ovarian cancer does present symptoms. Choice D is incorrect as there are no reliable screening tests for ovarian cancer, which contributes to the difficulty in early detection.

Correct Answer: B

Rationale: The correct answer is B: Osteoclasts. Osteoclasts are bone cells responsible for breaking down the bone matrix through a process called bone resorption. They secrete enzymes and acids that dissolve the mineralized matrix, allowing for bone remodeling and repair. Osteocytes (A) are mature bone cells that help maintain bone tissue. Osteoblasts (C) are responsible for bone formation by synthesizing new bone matrix. Osteoprogenitor cells (D) are undifferentiated cells that can differentiate into osteoblasts. Therefore, the correct answer is B as osteoclasts specifically break down the bone matrix.

Correct Answer: A

Rationale: The correct answer is A: 2-3°C below the normal body temperature. Testicles need to be slightly cooler than the body's normal temperature for optimal functioning. This slight decrease in temperature helps in maintaining the viability of sperm production. Choices B, C, and D are incorrect because a greater deviation from the body's normal temperature would be detrimental to sperm production. B: 4-5°C is too much of a decrease, while C: 33-36°C and D: 31-34°C are higher than the normal body temperature, which would hinder sperm production.

Correct Answer: A

Rationale: The correct answer is A: Four-cell stage. Dichorionic-diamniotic twins occur when the embryo splits into two separate embryos very early in development, typically at the four-cell stage. At this stage, each embryo will have its own chorion and amnion, leading to separate placentas and amniotic sacs. Choices B, C, and D occur later in development and do not result in the formation of two separate embryos with their own chorion and amnion, making them incorrect for the scenario of dichorionic-diamniotic twins.

Correct Answer: C

Rationale: The correct answer is C: Nucleus pulposus. The nucleus pulposus is the inner gel-like core of the intervertebral disc that provides cushioning and flexibility. It consists of water, proteoglycans, and cells. The annulus fibrosus (choice B) is the outer ring of tough fibrous tissue surrounding the nucleus pulposus. Nucleus fibrosus (choice A) and Annulus pulposus (choice D) are not anatomically correct terms and do not describe the inner part of the intervertebral disc.