Reproductive System Quizlet

Reproductive System Quizlet Related

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Which cells secrete testosterone?

  • A. Sertoli cells
  • B. Spermatogenic cells
  • C. Leydig cells
  • D. Oogonia
Correct Answer: C

Rationale: Step-by-step rationale:
1. Leydig cells are located in the testes and are responsible for secreting testosterone.
2. Testosterone is a male sex hormone crucial for regulating various functions in the body.
3. Sertoli cells provide support for sperm development, not testosterone secretion.
4. Spermatogenic cells are involved in sperm production, not testosterone secretion.
5. Oogonia are female germ cells, not involved in testosterone secretion.

Summary:
Choice C (Leydig cells) is correct because they are the specific cells in the testes responsible for secreting testosterone. Choices A, B, and D are incorrect as they are associated with other functions related to reproduction and are not involved in testosterone secretion.

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Circular movement around an axis is known as ___________________.

  • A. Dorsiflexion
  • B. Rotation
  • C. Extension
  • D. Pronation
Correct Answer: B

Rationale: The correct answer is B: Rotation. Circular movement around an axis is described as rotation. This movement involves turning or spinning around a fixed point. Dorsiflexion (A) is the movement of bringing the top of the foot towards the shin. Extension (C) refers to straightening or increasing the angle of a joint. Pronation (D) is the inward rotation of the forearm or foot. Rotation (B) specifically signifies movement around an axis, making it the most appropriate choice for circular movement.

Paraurethral (Skene’s) glands secrete

  • A. Estrogen
  • B. Mucus
  • C. Testosterone
  • D. Androgens
Correct Answer: B

Rationale: The paraurethral (Skene's) glands are responsible for secreting mucus to facilitate lubrication during sexual arousal. This mucus aids in lubricating the urethra and providing moisture for sexual intercourse. Estrogen (Choice A) is a hormone produced by the ovaries and not directly related to the function of Skene's glands. Testosterone (Choice C) and androgens (Choice D) are male sex hormones and are not involved in the secretion of mucus by Skene's glands. Therefore, the correct answer is B, mucus, as it aligns with the known function of the paraurethral glands.

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.

Which hormone causes the uterus to increase glycogen?

  • A. progesterone
  • B. FSH
  • C. LH
  • D. estrogen
Correct Answer: A

Rationale: Progesterone is the correct answer because it is responsible for preparing the uterus for potential implantation by increasing glycogen levels. Progesterone promotes the growth of blood vessels and glands in the uterus, leading to increased glycogen production. FSH and LH are involved in the menstrual cycle and ovulation but do not directly impact glycogen levels in the uterus. Estrogen plays a role in the growth and thickening of the endometrial lining but does not specifically stimulate glycogen production.

Patella is a

  • A. Irregular bone
  • B. Short bone
  • C. Sesamoid bone
  • D. Flat bone
Correct Answer: C

Rationale: The patella is a sesamoid bone located within the tendon of the quadriceps femoris muscle. Sesamoid bones are small, round bones embedded within tendons, providing protection and improving the mechanical advantage of the muscle. It is not irregular (A), short (B), or flat (D) as it does not fit the structural characteristics of those bone types. Therefore, the correct answer is C.

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