Nokea
After a rectal examination of a patient with obstructive jaundice, the nurse expects the stool to be what color?
- A. Tan
- B. Pale yellow
- C. Black
- D. Bright red
Correct Answer: A
Rationale: The correct answer is A: Tan. In obstructive jaundice, there is a blockage in the bile ducts, leading to reduced bile flow into the intestines. As a result, stool color changes to tan or clay-colored due to the absence of bile pigments. Pale yellow is incorrect as it suggests some bile flow. Black stool indicates upper gastrointestinal bleeding. Bright red stool indicates lower gastrointestinal bleeding.
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A 49-yr-old man who has type 2 diabetes, high blood pressure, hyperlipidemia, and gastroesophageal reflux tells the nurse that he has had recent difficulty in achieving an erection. Which of the following drugs from his current medications list may cause erectile dysfunction (ED)?
- A. Ranitidine (Zantac)
- B. Atorvastatin (Lipitor)
- C. Propranolol (Inderal)
- D. Metformin (Glucophage)
Correct Answer: C
Rationale: The correct answer is C: Propranolol (Inderal). Propranolol is a beta-blocker commonly used to treat high blood pressure, which can lead to erectile dysfunction (ED) as a side effect by affecting blood flow. The other choices, A: Ranitidine (Zantac) is an H2 blocker used for GERD; B: Atorvastatin (Lipitor) is a statin used to lower cholesterol; and D: Metformin (Glucophage) is an oral antidiabetic agent. These medications are not typically associated with causing ED.
At the level of the testicle, the efferent ducts:
- A. continue the rete testis;
- B. open in the epididymal duct;
- C. open in the deferent duct;
- D. are 30;
Correct Answer: A
Rationale: Rationale for Correct Answer A: The efferent ducts continue the rete testis. This is true because the efferent ducts are a series of small ducts that connect the rete testis to the epididymis. The rete testis is a network of tubules located at the back of the testicle where spermatozoa from the seminiferous tubules are collected. Therefore, the efferent ducts serve to transport spermatozoa from the rete testis to the epididymis for further maturation.
Summary of Incorrect Choices:
B: Opening in the epididymal duct is incorrect because the efferent ducts lead into the epididymis, not the epididymal duct itself.
C: Opening in the deferent duct is incorrect because the efferent ducts do not lead directly into the deferent duct, but rather connect the rete testis to the epididym
Which of the following describes oviparity?
- A. Offspring are fully developed at birth.
- B. Young mammals obtain nourishment from mother's placenta
- C. Embryos that continue developing outside their mother's body.
- D. Frogs that hatch from shell-covered fertilized eggs within female's body.
Correct Answer: D
Rationale: Oviparity refers to the reproductive mode where organisms lay eggs that hatch outside the body. Choice D is correct as it describes frogs hatching from shell-covered fertilized eggs within the female's body. This is because frogs lay eggs externally after fertilization, and the eggs hatch into tadpoles outside the female's body. Choices A and B are incorrect as they describe viviparity, where offspring are fully developed at birth and young mammals obtain nourishment from the mother's placenta, respectively. Choice C is incorrect as it describes ovoviviparity, where embryos develop inside eggs within the mother's body but are born live.
The inner mucosal layer of the uterus that is sloughed off approximately every 28 days is called the ________.
- A. endometrium
- B. myometrium
- C. perimetrium
- D. epimetrium
Correct Answer: A
Rationale: The correct answer is A: endometrium. The endometrium is the inner mucosal layer of the uterus that sheds during menstruation. It is where implantation of a fertilized egg occurs. Myometrium (B) is the middle muscular layer, responsible for uterine contractions. Perimetrium (C) is the outer layer of the uterus. Epimetrium (D) is not a recognized term in anatomy.
Where is the majority of progesterone produced?
- A. Graafian follicle
- B. corpus luteum
- C. secondary follicle
- D. adrenal cortex
Correct Answer: B
Rationale: The correct answer is B: corpus luteum. Progesterone is primarily produced by the corpus luteum, which forms from the ruptured ovarian follicle after ovulation. The corpus luteum secretes progesterone to prepare the uterus for potential implantation of a fertilized egg. The Graafian follicle (choice A) is a mature ovarian follicle that contains the egg, but it does not produce progesterone. The secondary follicle (choice C) is an immature ovarian follicle and does not produce progesterone. The adrenal cortex (choice D) is responsible for producing other hormones like cortisol and aldosterone, not progesterone.