Reproductive System Anatomy Quizlet

Reproductive System Anatomy Quizlet Related

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The human reproductive system is regulated by

  • A. restriction enzymes
  • B. antigens
  • C. complex carbohydrates
  • D. hormones
Correct Answer: D

Rationale: The correct answer is D: hormones. The human reproductive system is regulated by hormones such as estrogen, progesterone, testosterone, and others. Hormones play a crucial role in controlling the menstrual cycle, sperm production, ovulation, and other reproductive processes. They help in maintaining the proper functioning of the reproductive organs and influencing sexual characteristics.

A: restriction enzymes are involved in DNA manipulation and have no direct role in regulating the human reproductive system.
B: antigens are substances that trigger an immune response, not involved in regulating the reproductive system.
C: complex carbohydrates are a source of energy and not directly involved in regulating the human reproductive system.

In summary, hormones are the primary regulators of the human reproductive system, influencing various processes essential for reproduction.

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Choose the correct sequence of events in the post-fertilization cleavage process.

  • A. Zygote - morula- 2 cells- 4 cells- 8 cells- blastula
  • B. 2 cells-  4 cells- 8 cells- zygote-  morula- blastul
  • C. Zygote- 2 cells- 4 cells- 8 cells- morula- blastul
  • D. 8 cells-4 cells-2 cells-morula-zygote-blastula
Correct Answer: A

Rationale: The correct sequence is A: Zygote - morula - 2 cells - 4 cells - 8 cells - blastula. After fertilization, the zygote undergoes cleavage to form the morula, which then divides into 2 cells, then 4 cells, and further into 8 cells. These cells then rearrange to form the blastula. This sequence aligns with the natural progression of post-fertilization cleavage in embryonic development.

Choices B, C, and D are incorrect because they do not follow the correct chronological order of events in post-fertilization cleavage. In these sequences, the order of cell divisions is mixed up, leading to an inaccurate representation of the cleavage process. It is crucial to understand the logical progression of events in embryonic development to identify the correct sequence of post-fertilization cleavage.

Which of the following is not a bacterial infection?

  • A. Chlamydial
  • B. Gonorrhea
  • C. Herpes
  • D. Syphilis
Correct Answer: C

Rationale: The correct answer is C, Herpes. Herpes is a viral infection caused by the herpes simplex virus, not a bacterial infection. Chlamydial (A), Gonorrhea (B), and Syphilis (D) are all bacterial infections caused by specific bacteria. Therefore, Herpes does not fit the category of bacterial infections, making it the correct choice.

A hollow cavity within a bone is termed as:

  • A. Sulcus
  • B. Fossa
  • C. Fissure
  • D. Sinus
Correct Answer: B

Rationale: The correct answer is B: Fossa. A fossa is a hollow cavity or depression within a bone. It serves as an attachment site for muscles, ligaments, or tendons. Sulcus (A) is a groove or furrow, not a hollow cavity in a bone. Fissure (C) is a narrow opening or cleft, not a hollow cavity. Sinus (D) is a cavity within a bone filled with air, not necessarily hollow. Therefore, the best choice for a hollow cavity within a bone is a fossa.

A woman who has never conceived a child is called as:

  • A. Primipara
  • B. Nulligravida
  • C. Nullipara
  • D. Primigravida
Correct Answer: C

Rationale: The correct answer is C: Nullipara. Nullipara refers to a woman who has never given birth to a child. "Nulli-" means none or zero, and "-para" refers to giving birth. This term specifically indicates the absence of any childbirth experience, regardless of pregnancy history.

A: Primipara would refer to a woman who has given birth to one child.
B: Nulligravida would refer to a woman who has never been pregnant.
D: Primigravida would refer to a woman who is pregnant for the first time.

Therefore, C is the correct choice as it accurately describes a woman who has not experienced childbirth.

Mucous membrane partially or completely covering the vaginal orifice is called as:

  • A. Clitoris
  • B. Labia
  • C. Hymen
  • D. Vulva
Correct Answer: C

Rationale: The correct answer is C: Hymen. The hymen is a mucous membrane that partially or completely covers the vaginal orifice. It is a thin tissue located at the opening of the vagina. The hymen can vary in appearance and may partially cover the vaginal opening, making it an essential anatomical structure to consider. The other choices are incorrect because:
A: Clitoris - The clitoris is a highly sensitive sexual organ located above the vaginal opening, not covering it.
B: Labia - The labia are the folds of skin surrounding the vaginal opening, not covering it entirely.
D: Vulva - The vulva refers to the external female genitalia, including the labia, clitoris, and vaginal opening, but it does not specifically refer to the mucous membrane covering the vaginal orifice.

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