Nokea
Which statement describes a function of the human male reproductive system?
- A. It produces gametes in testes.
- B. It supplies a fluid that protects the fetus.
- C. It provides support for the development of the embryo.
- D. It provides nutrient materials through a placenta.
Correct Answer: A
Rationale: The correct answer is A because the primary function of the human male reproductive system is to produce gametes (sperm) in the testes. Sperm are essential for fertilization and reproduction. Choice B is incorrect as the fluid that protects the fetus is produced by the female reproductive system. Choice C is incorrect as embryo development support is provided by the female reproductive system. Choice D is incorrect as the placenta, which provides nutrient materials, is a structure formed by the female reproductive system during pregnancy.
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Twisting of the spermatic cord results in a condition called
- A. Varicocele
- B. Hydrocele
- C. Cryptorchidism
- D. Testicular torsion
Correct Answer: D
Rationale: The correct answer is D: Testicular torsion. Testicular torsion occurs when the spermatic cord twists, cutting off blood flow to the testicle. This can lead to severe pain and require emergency treatment to prevent tissue damage. Varicocele (A) is the enlargement of veins within the scrotum. Hydrocele (B) is the accumulation of fluid around the testicle. Cryptorchidism (C) is the condition of undescended testicles. Testicular torsion is the only choice that directly involves twisting of the spermatic cord leading to a medical emergency.
Sexual feelings are normal and necessary
- A. for reproduction to occur
- B. for the heart and lungs to function properly
- C. for an ovum to be released from a female’s ovary each month
- D. for teens to become adults
Correct Answer: A
Rationale: The correct answer is A because sexual feelings are indeed necessary for reproduction to occur. Sexual arousal and desire play a vital role in initiating the process of conception and ensuring the continuation of the human species. Without sexual feelings, procreation would not be possible.
Explanation for why the other choices are incorrect:
B: Sexual feelings are not necessary for the heart and lungs to function properly. These bodily functions are regulated by the autonomic nervous system, not by sexual arousal.
C: While sexual feelings can influence the release of an ovum during ovulation, they are not the sole factor. Ovulation can occur without sexual arousal.
D: Sexual feelings are not a requirement for teenagers to become adults. Puberty and the physical and emotional changes that come with it mark the transition from adolescence to adulthood, not sexual feelings.
Large process on the femur that is present for attachment of muscles is
- A. condyle
- B. tubercle
- C. bone head
- D. trochanter
Correct Answer: B
Rationale: The correct answer is B: tubercle. A tubercle is a small rounded projection on a bone where muscles and ligaments can attach. In this case, the large process on the femur that serves as an attachment site for muscles is a tubercle.
Condyle (choice A) is a rounded prominence at the end of a bone, typically for articulation with another bone. Bone head (choice C) refers to the rounded end of a bone, usually forming a joint. Trochanter (choice D) is a large, blunt process on the femur that serves as an attachment point for muscles, but it is not the specific term for the large process on the femur mentioned in the question.
Select the correct statements regarding the ovary:
- A. it is covered on the surface by a simple epithelium;
- B. it displays the glandular parenchyma on the inside;
- C. it contains follicles at various stages of development;
- D. it connects by ligaments to the Fallopian tube;
Correct Answer: B
Rationale: The correct statement is B: it displays the glandular parenchyma on the inside. The ovary contains specialized tissue called parenchyma, which consists of follicles that house the ova (eggs). This glandular tissue is responsible for producing hormones like estrogen and progesterone.
Rationale:
- A is incorrect because the ovary is actually covered by a specialized epithelial layer called the germinal epithelium, not a simple epithelium.
- C is incorrect because while the ovary does contain follicles at various stages of development, this alone does not encompass the entire function or structure of the ovary.
- D is incorrect because the ovary is connected to the Fallopian tube via the infundibulopelvic ligament, not directly by ligaments.
Outermost layer of the uterus is
- A. Peritoneum
- B. Pericardium
- C. Perimetrium
- D. Pericyte
Correct Answer: C
Rationale: The correct answer is C: Perimetrium. The perimetrium is the outermost layer of the uterus and consists of a thin serous layer of connective tissue. This layer provides support and protection to the uterus.
Rationale:
1. Peritoneum (A) is the serous membrane that lines the abdominal cavity, not the outermost layer of the uterus.
2. Pericardium (B) is the membranous sac that surrounds the heart, not related to the uterus.
3. Pericyte (D) is a type of cell found in blood vessels and involved in vascular function, not a layer of the uterus.
In summary, the perimetrium is the correct answer as it is the specific layer that forms the outer covering of the uterus, providing structural support and protection.