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.
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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.
Which of these is not produced by the placenta?
- A. estrogen
- B. relaxin
- C. progesterone
- D. lactogen
Correct Answer: B
Rationale: The correct answer is B: relaxin. The placenta produces estrogen, progesterone, and lactogen to support pregnancy. Relaxin is primarily produced by the corpus luteum and later by the placenta. However, it is not exclusively produced by the placenta, making it the correct choice. Estrogen is crucial for fetal development and maintaining pregnancy. Progesterone helps in preparing the uterus for implantation and supporting the pregnancy. Lactogen (human placental lactogen) plays a role in regulating maternal metabolism and fetal growth.
Which bone is called as the shoulder bone
- A. Clavicle
- B. Sternum
- C. Humerus
- D. Scapula
Correct Answer: D
Rationale: The correct answer is D: Scapula. The scapula is commonly known as the shoulder blade and is the bone that connects the upper arm bone (humerus) to the collarbone (clavicle) to form the shoulder joint. The other choices, A: Clavicle, is the collarbone; B: Sternum, is the breastbone; and C: Humerus, is the upper arm bone, are not specifically referred to as the shoulder bone. Therefore, the scapula is the correct answer as it is directly associated with the shoulder joint.
The scrotum:
- A. is located above the external male genital organ;
- B. shelters the male gonad;
- C. is made up of concentric tunics, a continuation of the ones from the anterior abdominal wall;
- D. is part of the external genital organs;
Correct Answer: B
Rationale: The correct answer is B: shelters the male gonad. The scrotum houses and protects the testes, the male gonads responsible for sperm production. This is crucial for maintaining optimal temperature for spermatogenesis. Choices A, C, and D are incorrect as the scrotum is located below the external male genital organ, has separate tunics from the abdominal wall, and is considered part of the external genital organs.
Morphology of fibrocytic disease:
- A. Apocrine metaplasia
- B. Proliferation of ductules
- C. Epithelial hyperplasia
- D. Giant cell
Correct Answer: C
Rationale: The correct answer is C: Epithelial hyperplasia. Fibrocytic disease involves nonproliferative and proliferative fibrocystic changes in the breast tissue. Epithelial hyperplasia is a common proliferative change seen in fibrocystic disease, characterized by increased number of epithelial cells in the ducts and lobules. Apocrine metaplasia, choice A, is another common change in fibrocystic disease but is not specific to morphology. Proliferation of ductules, choice B, is not a characteristic feature of fibrocystic disease. Giant cells, choice D, are not typically associated with fibrocystic changes.