Nursing Elites

1. Which gland is responsible for producing the fluid that carries sperm in the male reproductive system?

• A. Testes
• B. Scrotum
• C. Prostate gland
• D. Seminal vesicles

Correct answer: D

Rationale: The correct answer is D: Seminal vesicles. Seminal vesicles are responsible for producing a significant portion of the fluid that makes up semen, providing nutrients and protection for the sperm. While the testes produce sperm, the scrotum is the external sac that holds the testes, and the prostate gland also contributes to semen production but is not solely responsible for it.

2. At what stage is urine formed in the kidney?

• A. After fluid reaches the bladder.
• B. When fluid fills the collecting duct.
• C. Before blood enters the glomerulus.
• D. During fluid transport to the urethra.

Correct answer: B

Rationale: Urine is formed when fluid fills the collecting duct in the kidney. The collecting duct is where the final concentration of urine occurs after the filtration process in the nephron. Choice A is incorrect because urine formation happens before fluid reaches the bladder. Choice C is incorrect because urine formation occurs after blood has been filtered in the glomerulus. Choice D is incorrect because urine formation happens before fluid is transported to the urethra for elimination.

3. Which of the following functions is not controlled by the autonomic nervous system?

• A. Digestion
• B. Walking
• C. Heartbeat
• D. Temperature regulation

Correct answer: B

Rationale: The correct answer is B: Walking. Walking is not directly controlled by the autonomic nervous system. Walking is a voluntary action governed by the somatic nervous system, which controls voluntary skeletal muscle movement. The autonomic nervous system, on the other hand, regulates functions that are involuntary, such as digestion, heartbeat, and temperature regulation. Choices A, C, and D are all functions controlled by the autonomic nervous system. Digestion involves processes like peristalsis and secretion of digestive enzymes, heartbeat is regulated by the autonomic nervous system to maintain blood pressure and circulation, and temperature regulation includes responses like sweating or shivering to maintain body temperature within a narrow range.

4. What ethical considerations are associated with the potential use of CRISPR-Cas9 technology in humans?

• A. Concerns about unintended consequences on the genome and potential off-target effects.
• B. Debates on modifying the human germline and potential eugenic implications.
• C. Accessibility and affordability of the technology, ensuring equitable access to benefits.
• D. Risks associated with CRISPR-Cas9 editing germline cells and potential long-term impacts.

Correct answer: B

Rationale: The correct answer is B. CRISPR-Cas9 technology allows precise editing of germline cells, raising ethical concerns about modifying the human gene pool. This includes potential eugenic implications, debates on altering future generations, and the moral implications of such genetic modifications. Choice A discusses unintended consequences and off-target effects, but the primary ethical consideration with CRISPR-Cas9 technology relates to altering the human germline. Choices C and D, while important factors, are not the central ethical dilemmas associated with using CRISPR-Cas9 technology in humans.

5. Which of the following layers of skin acts as an energy reserve by storing adipocytes and releasing them into circulation when energy is needed?

• A. epidermis
• B. dermis
• C. hypodermis
• D. stratum basale

Correct answer: C

Rationale: The hypodermis, also known as the subcutaneous tissue, is the deepest layer of the skin. This layer contains adipocytes (fat cells) that act as an energy reserve by storing excess energy in the form of fat. When energy is needed, these stored fats can be released into circulation to be used by the body's cells. The epidermis is the outermost layer of the skin, primarily responsible for providing a protective barrier. The dermis lies between the epidermis and hypodermis and contains blood vessels, nerves, and structures like hair follicles and sweat glands. The stratum basale is the deepest layer of the epidermis, responsible for cell renewal and regeneration.

Similar Questions