Nokea
Which of these is not a function of testosterone?
- A. loss of body hair
- B. thickening of the larynx
- C. anabolism of skeletal muscle
- D. thickening of bones
Correct Answer: A
Rationale: The correct answer is A, loss of body hair. Testosterone is responsible for thickening of the larynx, anabolism of skeletal muscle, and thickening of bones. It promotes growth and development of male secondary sexual characteristics, such as increased body hair. Therefore, loss of body hair is not a function of testosterone. Choice B, thickening of the larynx, is correct because testosterone contributes to the deepening of the voice by thickening the vocal cords. Choice C, anabolism of skeletal muscle, is correct as testosterone enhances protein synthesis in muscles, leading to muscle growth. Choice D, thickening of bones, is correct because testosterone promotes bone growth and mineralization.
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During a history, a patient reports rectal bleeding, a warning sign of colorectal cancer. The nurse correlates which clinical finding with colorectal cancer?
- A. Thick, blood-tinged mucus within the rectum
- B. A pus-filled cavity in the anorectal area
- C. An irregular mass with raised edges on the rectal wall
- D. A small, smooth nodule protruding from the rectum
Correct Answer: C
Rationale: The correct answer is C because an irregular mass with raised edges on the rectal wall is a common clinical finding associated with colorectal cancer. This mass could be a tumor or polyp, which can lead to rectal bleeding. Option A is incorrect because thick, blood-tinged mucus is more commonly associated with inflammatory conditions. Option B is incorrect as a pus-filled cavity suggests an abscess or infection, not colorectal cancer. Option D is incorrect because a small, smooth nodule is more indicative of hemorrhoids rather than colorectal cancer.
About the vascularization of the uterus we can state the following:
- A. the arteries branch off the common iliac artery;
- B. the arteries are branches off the abdominal aorta;
- C. the veins open in the inferior vena cava;
- D. the arteries are branches off the internal iliac artery;
Correct Answer: B
Rationale: The correct answer is B because the arteries supplying the uterus arise from the abdominal aorta. The uterine arteries branch off the anterior division of the internal iliac artery, which itself arises from the posterior division of the internal iliac artery. This vascular supply ensures that the uterus receives oxygenated blood rich in nutrients necessary for its proper function.
Choice A is incorrect because the common iliac artery does not directly supply blood to the uterus. Choice C is incorrect because the veins draining the uterus ultimately empty into the internal iliac veins, which then drain into the common iliac veins and not directly into the inferior vena cava. Choice D is incorrect because while the uterine arteries are indeed branches off the internal iliac artery, the internal iliac artery itself arises from the common iliac artery and not directly from the abdominal aorta.
The process when the ovarian follicle ruptures and releases an ovum is called ___________.
- A. Menopause
- B. ovulation
- C. Implantation
- D. Breast
Correct Answer: B
Rationale: The correct answer is B: ovulation. Ovulation is the process where the ovarian follicle ruptures and releases an ovum. This occurs around the middle of the menstrual cycle. Menopause (A) is the cessation of menstrual periods, not the release of an ovum. Implantation (C) is the attachment of a fertilized egg to the uterine wall, not the release of an ovum. Breast (D) is not related to the process of ovulation.
Ectoderm, mesoderm, and endoderm are three tissue layers that are formed during _____________ stage.
- A. morula
- B. blastula
- C. gastrula
- D. neurula
Correct Answer: C
Rationale: The correct answer is C: gastrula. During the gastrula stage of embryonic development, the blastula undergoes a process called gastrulation, where the three primary germ layers - ectoderm, mesoderm, and endoderm - are formed. The ectoderm gives rise to the nervous system and skin, the mesoderm forms muscles and organs, and the endoderm develops into the lining of the digestive tract and respiratory system. Morula (A) is an earlier stage where the zygote divides into multiple cells. Blastula (B) is the stage before gastrula where a hollow ball of cells is formed. Neurula (D) is a stage specific to vertebrate embryos where the neural tube begins to form.
A nurse goes to a high school to teach students about reducing the risk of sexually transmitted infections. Which of the following is the best answer for providing information on the prevention of STIs?
- A. Have monogamous sex with an infected partner.
- B. Abstain from sexual activities.
- C. Wash any areas where there has been indirect contact with semen or vaginal mucus.
- D. Avoid protected sex until you and sexual partners have completed treatment.
Correct Answer: B
Rationale: Abstinence is the most effective way to prevent STIs.