at 16 weeks of pregnancy the breast changes include

HESI RN

Reproductive Health Exam

1. At 16 weeks of pregnancy, the breast changes include:

A. Montgomery's tubercles are prominent.
B. Darkening of the nipple.
C. Prickling, tingling sensation.
D. Colostrum can be expressed.

Correct answer: C

Rationale: At 16 weeks of pregnancy, the sensation of prickling and tingling in the breasts is common due to hormonal changes. Montgomery's tubercles becoming prominent is more characteristic of early pregnancy, typically around the first trimester. Darkening of the nipple, known as areola darkening, can occur but is more commonly observed later in pregnancy. The expression of colostrum, the first milk produced by the mammary glands, usually happens closer to the end of pregnancy or after childbirth, not typically at 16 weeks.

2. Which one is not a barrier method for birth control?

A. Diaphragms
B. Cervical caps
C. Vaults
D. Intrauterine Devices (IUDs)

Correct answer: D

Rationale: The correct answer is D, Intrauterine Devices (IUDs). Barrier methods of birth control physically block sperm from reaching the egg. Diaphragms, cervical caps, and vaults are examples of barrier methods as they create a barrier that prevents sperm from reaching the cervix. In contrast, IUDs work by altering the cervical mucus and uterine lining, making it difficult for sperm to reach the egg, but they do not physically block sperm like barrier methods do.

3. Which of the following is not a role of Reproductive and Child Health Care (RCH) programs?

A. Awareness about reproductive health
B. Providing facilities to build a reproductively healthy society
C. Providing support to reproductively sick people
D. Promoting abortion

Correct answer: D

Rationale: The correct answer is D. Promoting abortion is not a role of the Reproductive and Child Health Care (RCH) programs. RCH programs focus on promoting awareness about reproductive health, providing facilities to build a reproductively healthy society, and offering support to reproductively sick individuals. The promotion of abortion is not within the scope of RCH programs, which aim to improve maternal and child health outcomes through education, healthcare services, and support systems.

4. What is one role of the hormone estrogen?

A. Stimulates the development of the milk-producing tissue.
B. Stimulates the production of lactoferrin.
C. Stimulates the development of the nipple and duct system in the breast.
D. Stimulates the secretion of relaxin.

Correct answer: A

Rationale: The correct answer is A: Estrogen stimulates the development of the milk-producing tissue in the breast. This hormone is essential in preparing the breast for milk production. Choice B is incorrect because lactoferrin production is not a primary role of estrogen. Choice C is incorrect as estrogen primarily influences the development of the breast tissue rather than specifically the nipple and duct system. Choice D is incorrect because relaxin secretion is not a function typically associated with estrogen.

5. 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.