Nokea
This tiny gland produces a secretion that is similar to a large lysosome and that cleanses the male urethra of assists penetration of the egg is called traces of acidic urine prior to the ________.
- A. flagellum
- B. prostate
- C. midpiece
- D. bulbo-urethral gland
Correct Answer: D
Rationale: The correct answer is D: bulbo-urethral gland. This gland produces a clear secretion that neutralizes traces of acidic urine, lubricates the urethra, and assists in sperm motility. The other choices are incorrect because:
A: Flagellum is a structure on sperm cells for propulsion.
B: Prostate produces seminal fluid but does not cleanse the urethra.
C: Midpiece is a part of the sperm cell that contains mitochondria for energy production, not a gland.
You may also like to solve these questions
The pregnancy period is:
- A. 120 days;
- B. nine weeks;
- C. 280 weeks;
- D. 280 days;
Correct Answer: D
Rationale: The correct answer is D: 280 days. The pregnancy period, also known as gestation, typically lasts around 280 days from the first day of the last menstrual period to the birth of the baby. This duration is calculated based on the average length of a full-term pregnancy, which is approximately 40 weeks. It is important to note that individual pregnancies may vary slightly in duration, but the standard reference is 280 days.
Explanation of other choices:
A: 120 days - This is too short for a full-term pregnancy.
B: Nine weeks - This is only around 63 days, which is far less than the average gestation period.
C: 280 weeks - This is equivalent to around 1960 days, which is much longer than a typical pregnancy duration.
The male reproductive system is made up of the following structures, EXCEPT:
- A. prostate;
- B. testicle;
- C. spermatic ducts;
- D. vestibular bulbs;
Correct Answer: D
Rationale: The correct answer is D: vestibular bulbs. The male reproductive system consists of the prostate, testicles, and spermatic ducts, all essential for the production, storage, and transportation of sperm. Vestibular bulbs are actually part of the female reproductive system, involved in sexual arousal, and not found in the male reproductive system. Therefore, it is the only structure listed that is not a part of the male reproductive system.
Which of the following is greater after birth than before birth?
- A. Flow through the foramen ovale
- B. Pressure in the right atrium
- C. Flow through the ductus arteriosus
- D. Aortic pressure
Correct Answer: D
Rationale: Step-by-step rationale:
1. After birth, the foramen ovale closes, reducing flow (A)
2. Pressure in the right atrium decreases due to closing of fetal shunts (B)
3. Ductus arteriosus closes, reducing flow (C)
4. Aortic pressure increases as systemic circulation begins (D)
Summary:
A, B, and C decrease after birth due to closure of fetal shunts, while D increases as systemic circulation takes over, making it the correct choice.
Regarding respiratory system of fetus
- A. Respiratory bud starts to appear at the ventral wall of foregut at approximately week 10 of gestation
- B. There are 4 stages of development of respiratory system
- C. Development of respiratory tract is not complete until the last week of fetal development.
- D. Epithelial respiratory is derived from endodermal
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.
Each menstrual cycle is considered as a period of ________
- A. 28 days
- B. 30 days
- C. 42 days
- D. 14 days
Correct Answer: A
Rationale: The correct answer is A: 28 days because the average menstrual cycle length is typically around 28 days, although it can vary. The menstrual cycle consists of different phases such as menstruation, follicular phase, ovulation, and luteal phase, which collectively last around 28 days on average. Choice B (30 days), C (42 days), and D (14 days) are incorrect because they do not represent the typical duration of a menstrual cycle. It's important to note that individual variations in cycle length are common, but 28 days is considered a standard reference point.