The nurse will plan to teach a 51-yr-old man who is scheduled for an annual physical examination about a(n)

Correct Answer: C

Rationale: The correct answer is C: normal decreases in testosterone level. At the age of 51, it is important to educate the man about the normal age-related decline in testosterone levels, which can affect various aspects of health. This information will help manage expectations and address potential symptoms. Option A is incorrect as testicular cancer risk typically decreases with age. Option B may be a concern but is not the primary focus of education for a routine physical exam. Option D (PSA testing) is more relevant for prostate health, which is not the main focus of education for a 51-year-old man's annual physical exam.

Correct Answer: B

Rationale: The correct answer is B: colostrum. Colostrum is the first milk produced by the mother after giving birth. It is rich in antibodies, providing passive immunity to the newborn. This helps protect the infant from infections until its own immune system fully develops. A: laguno - Not a substance related to maternal antibodies. C: rubell - Incorrect spelling and not relevant to maternal antibodies. D: placent - While the placenta does provide nutrients and oxygen to the fetus, it is not the source of maternal antibodies transferred to the newborn.

Correct Answer: B

Rationale: The correct answer is B because the ductus deferens penetrates the prostate gland to connect with the prostatic urethra, forming the ejaculatory duct. This allows for the transport of sperm from the epididymis to the urethra during ejaculation. A: Dartos muscle is responsible for wrinkling the scrotal skin but not raising and lowering the testes. C: The anterior lobe of the prostate gland mainly consists of fibromuscular tissue, not glandular tissue. D: Buck's fascia surrounds the corpora cavernosa and the corpus spongiosum of the penis, not the body of the penis itself.

Correct Answer: A

Rationale: The correct answer is A because the respiratory bud does indeed start to appear at the ventral wall of the foregut around week 10 of gestation. This marks the beginning of respiratory system development. Choice B is incorrect as there are actually 5 stages of respiratory system development. Choice C is also incorrect as the development of the respiratory tract is not fully complete until after birth, not just in the last week of fetal development. Choice D is incorrect because the epithelial respiratory lining is derived from endoderm, not endodermal.

Correct Answer: B

Rationale: The correct answer is B: testis. The testis is the primary male sex organ responsible for producing sperm and testosterone. It is located within the scrotum. The penis (choice A) is the male reproductive organ used for sexual intercourse but is not the primary sex organ. The scrotum (choice C) is the external sac that houses the testes but is not the primary sex organ itself. The epididymis (choice D) is a coiled tube located on the testis where sperm mature and are stored, but it is not the primary sex organ.