Nokea
The ducts or tubes responsible for receiving the ovulated oocyte and providing the site for fertilization are the ________.
- A. uterine (fallopian) tubes
- B. vagina
- C. ductus deferens
- D. uterus
Correct Answer: A
Rationale: The correct answer is A: uterine (fallopian) tubes. These tubes receive the ovulated oocyte from the ovary and provide the site for fertilization. The other choices are incorrect because:
B: The vagina is the birth canal and site for sperm deposition, not fertilization.
C: The ductus deferens is part of the male reproductive system, not involved in fertilization.
D: The uterus is where the fertilized egg implants and develops into a fetus, it is not the site for fertilization.
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What is produced by the ovaries?
- A. Primary oocytes, insulin and estrogen
- B. Secondary oocytes, progesterone and cortisol
- C. Tertiary oocytes, insulin and estrogen
- D. Secondary oocytes, estrogen and progesterone
Correct Answer: D
Rationale: The correct answer is D because the ovaries produce secondary oocytes, which are released during ovulation for fertilization. Additionally, the ovaries produce estrogen and progesterone, which are essential for the menstrual cycle and reproductive health. Choice A is incorrect as primary oocytes are present before birth and insulin is produced by the pancreas. Choice B is incorrect because cortisol is produced by the adrenal glands, not the ovaries. Choice C is incorrect as tertiary oocytes do not exist, and insulin is produced by the pancreas.
The internal male genital organs are represented by the following structures, EXCEPT:
- A. testicles;
- B. deferent ducts;
- C. corpora cavernosa;
- D. bulbourethral glands;
Correct Answer: C
Rationale: Step-by-step rationale for why choice C (corpora cavernosa) is correct:
1. Corpora cavernosa are erectile tissue in the penis, not internal male genital organs.
2. Testicles, deferent ducts, and bulbourethral glands are actual internal male genital organs.
3. Corpora cavernosa are involved in penile erection, not in male reproductive system functions.
Summary of why other choices are incorrect:
A: Testicles - Produces sperm and male sex hormones.
B: Deferent ducts - Transport sperm from the testicles to the urethra.
D: Bulbourethral glands - Produce pre-ejaculatory fluid to lubricate the urethra.
Which spermatid phase (spermiogenesis) is distinguished by the presence of PAS positive granules called pro acrosomal granules?
- A. Golgi phase
- B. Cap phase
- C. Acrosome phase
- D. Maturation phase
Correct Answer: A
Rationale: The correct answer is A: Golgi phase. During the Golgi phase of spermiogenesis, the proacrosomal granules are formed from the Golgi apparatus and are PAS positive. These granules will later contribute to the formation of the acrosome in mature sperm. The other choices are incorrect because:
B: Cap phase - This phase is characterized by the formation of the acrosomal cap over the nucleus, not the proacrosomal granules.
C: Acrosome phase - This phase involves the elongation and shaping of the acrosome, not the formation of proacrosomal granules.
D: Maturation phase - This phase focuses on the final maturation and condensation of the sperm cell, not the formation of proacrosomal granules.
On inspection of the external male genitalia, the nurse notes which finding as abnormal?
- A. The scrotum is covered with dark rugous skin.
- B. The skin covering the penis is hairless and loose.
- C. The urinary meatus is located on the upper surface of the penis.
- D. The left side of the scrotum hangs slightly lower than the right.
Correct Answer: C
Rationale: The correct answer is C because the urinary meatus should be located at the tip of the penis, not on the upper surface. This abnormality may indicate a condition like hypospadias. Option A describes normal scrotum skin. Option B describes normal penile skin. Option D describes a normal anatomical variation in scrotal positioning.
During oogenesis, an oogonium ovarian and uterine (menstrual) directly gives rise to ________. cycles?
- A. an ovum
- B. 7 days
- C. a primary oocyte
- D. 14 days
Correct Answer: D
Rationale: The correct answer is D: 14 days. During oogenesis, the process of ovulation occurs approximately 14 days prior to the start of the next menstrual cycle. This is crucial for timing fertilization and pregnancy. The other choices are incorrect because:
A: an ovum is the mature egg released during ovulation, not directly related to the menstrual cycle.
B: 7 days is not a relevant timeframe in the context of oogenesis and menstrual cycles.
C: a primary oocyte is the initial stage of egg development and needs further maturation before ovulation, not directly linked to the menstrual cycle timing.