which hormone is detected in pregnancy tests

HESI RN

Reproductive System Exam Quizlet

1. Which hormone is detected in pregnancy tests?

A. Estrogen
B. Progesterone
C. Luteinizing hormone (LH)
D. Human chorionic gonadotropin (hCG)

Correct answer: D

Rationale: Human chorionic gonadotropin (hCG) is the hormone detected in pregnancy tests. During pregnancy, the placenta produces hCG, which can be detected in the urine or blood to confirm pregnancy. Estrogen and progesterone are also essential hormones in pregnancy but are not typically used for pregnancy tests. Luteinizing hormone (LH) is involved in the menstrual cycle and ovulation, not pregnancy.

2. Which of the following is a function of the placenta?

A. The placenta secretes insulin.
B. The placenta facilitates the exchange of gases and nutrients between mother and fetus.
C. The placenta provides immunological protection to the fetus.
D. The placenta stores fat-soluble vitamins for the fetus.

Correct answer: B

Rationale: The correct answer is B. The placenta serves as a crucial organ during pregnancy, facilitating the exchange of gases (oxygen and carbon dioxide) and nutrients (such as glucose and amino acids) between the mother and the developing fetus. This exchange is vital for the fetus's growth and development. Choices A, C, and D are incorrect. The placenta does not secrete insulin; insulin is produced by the pancreas. While the placenta provides some immune support to the fetus, its main role is not immunological protection. Additionally, storing fat-soluble vitamins is not a primary function of the placenta.

3. During fertilization, the portion of the decidua covering the blastocyst is called:

A. Decidua basalis
B. Decidua Vera
C. Decidua parietalis
D. Decidua capsularis

Correct answer: D

Rationale: During fertilization, the decidua capsularis is the specific portion of the decidua that covers the blastocyst, providing protection and support. Decidua basalis refers to the part of the decidua located at the site of implantation on the maternal side. Decidua vera is the remainder of the decidua lining the uterus. Decidua parietalis is the portion of the decidua that lines the rest of the uterine cavity, except for the site of implantation. Therefore, in the context of fertilization, the decidua capsularis is the correct answer.

4. Polymenorrhoea is defined as:

A. Menstruation that occurs at an interval less than 35 days
B. Menstruation that occurs at an interval greater than 35 days
C. Menstruation that occurs at an interval less than 21 days
D. Menstruation that occurs at an interval greater than 21 days

Correct answer: C

Rationale: Polymenorrhoea is defined as menstruation that occurs at intervals shorter than 21 days. Choice A is incorrect because it describes menstruation at intervals less than 35 days. Choice B is incorrect as it describes menstruation at intervals greater than 35 days. Choice D is incorrect as it describes menstruation at intervals greater than 21 days.

5. A woman is considered to be in menopause if she has experienced the cessation of her menses for a period of:

A. 6 months
B. 12 months
C. 18 months
D. 24 months

Correct answer: B

Rationale: Menopause is defined as the cessation of menses for 12 months. This period is significant because it indicates the end of a woman's reproductive years. Choices A, C, and D are incorrect as they do not align with the established criteria for defining menopause.