Nokea
The failure of a testes to descend is referred to as _____.
- A. inguinal hernia
- B. strangulated hernia
- C. vaginal process
- D. cryptorchidism
Correct Answer: D
Rationale: The correct answer is D: cryptorchidism. This is because cryptorchidism specifically refers to the failure of one or both testes to descend into the scrotum. It is a common condition in newborns and can lead to complications if not treated.
A: Inguinal hernia is the protrusion of abdominal contents through the inguinal canal, not related to testes descent.
B: Strangulated hernia occurs when the blood supply to the herniated tissue is cut off, not related to testes descent.
C: Vaginal process is a structure involved in testicular descent but does not describe the failure of testes descent itself.
Summary:
Cryptorchidism is the correct term for undescended testes, while the other options are unrelated conditions.
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Sperm are formed in tightly coiled tubes called seminiferous tubules that are found within each ________.
- A. spermatic cord
- B. testis
- C. ductus deferens
- D. epididymis
Correct Answer: B
Rationale: The correct answer is B: testis. The seminiferous tubules are located within the testes, where sperm are produced through the process of spermatogenesis. The spermatic cord (A) contains blood vessels, nerves, and the vas deferens but not the seminiferous tubules. The ductus deferens (C) is a tube that carries sperm from the epididymis to the urethra, not where sperm are formed. The epididymis (D) is where sperm mature and are stored but not where they are initially formed. Therefore, the testis is the only choice where the seminiferous tubules are located for sperm production.
Bones that form the roof and the upper part of the sides of the cranium
- A. Frontal bone
- B. Temporal bone
- C. Parietal bone
- D. Occipital bone
Correct Answer: C
Rationale: The correct answer is C: Parietal bone. The parietal bone forms the roof and upper part of the sides of the cranium. It articulates with other bones, such as the frontal, temporal, and occipital bones, to create the structure of the skull. The frontal bone (A) forms the forehead, the temporal bone (B) is located on the sides of the skull, and the occipital bone (D) forms the back and base of the skull. Therefore, the parietal bone is the only bone among the choices that specifically fits the description of forming the roof and upper part of the sides of the cranium.
Process of giving birth is termed as
- A. Lactation
- B. Gestation
- C. Micturition
- D. parturition
Correct Answer: D
Rationale: The correct answer is D: parturition. Parturition refers to the process of giving birth. It involves the series of events that lead to the expulsion of the fetus from the mother's womb. Lactation (choice A) is the production of milk by the mammary glands after birth. Gestation (choice B) is the period of development of the fetus in the womb. Micturition (choice C) is the process of urination and is not related to childbirth. Therefore, the term that specifically describes the process of giving birth is parturition.
The pituitary FSH controls:
- A. the maturation of the ovarian follicles;
- B. the estrogen secretion;
- C. ovulation;
- D. the progesterone secretion;
Correct Answer: A
Rationale: The pituitary FSH (Follicle Stimulating Hormone) controls the maturation of ovarian follicles by stimulating their growth and development. FSH plays a crucial role in the early stages of the menstrual cycle. Estrogen secretion is primarily regulated by the ovaries, not FSH. Ovulation is mainly triggered by the surge in LH (Luteinizing Hormone) levels, not FSH. Progesterone secretion is mainly controlled by the corpus luteum, which forms after ovulation, not directly by FSH. Therefore, the correct answer is A as FSH directly influences the growth and maturation of ovarian follicles.
Which of the following are all components of sperm?
- A. acrosome, flagellum, nucleus
- B. codpiece, flagellum, midpiece
- C. nucleus, seminal vesicles, mitochondria
- D. DNA, flagellum, efferent ductules
Correct Answer: A
Rationale: The correct answer is A: acrosome, flagellum, nucleus. The acrosome contains enzymes for penetrating the egg. The flagellum is the tail for movement. The nucleus contains genetic material. Choice B is incorrect because a codpiece is a protective garment and not a component of sperm. Choice C is incorrect because seminal vesicles and mitochondria are not components of sperm. Choice D is incorrect because efferent ductules are part of the male reproductive system, not a component of sperm.