katie wonders when she will first be able to hear her fetuss heartbeat through a stethoscope you tell her that this should happen by the

ATI RN

Human Growth and Development Exam 1

1. Katie wonders when she will first be able to hear her fetus's heartbeat through a stethoscope. You tell her that this should happen by the __________.

A. fourth week of pregnancy
B. third month of pregnancy
C. end of the second trimester
D. beginning of the third trimester

Correct answer: B

Rationale: The correct answer is the third month of pregnancy (choice B). During the third month of pregnancy, which is around 9-12 weeks, a fetal heartbeat can typically be heard using a stethoscope. This is an exciting milestone for expectant parents as it provides reassurance about the baby's well-being. Choices A, C, and D are incorrect because by the fourth week of pregnancy, the fetal heartbeat is not usually detectable with a stethoscope. The end of the second trimester and the beginning of the third trimester are too late in the pregnancy timeline for this milestone.

2. A 20-week-old fetus can __________.

A. be stimulated as well as irritated by sounds
B. survive, if born early
C. breathe without oxygen assistance, if born early
D. control its own body temperature Answer: A Page Ref: 80 Skill Level: Understand Topic: Prenatal Development Difficulty Level: Moderate

Correct answer: A

Rationale: A 20-week-old fetus is able to be stimulated as well as irritated by sounds because by this stage of prenatal development, the fetus's auditory system is already well-developed. It can respond to external sounds and may even startle or move in reaction to loud noises.

3. Students who are foreign-born or first-generation Americans _______ than students of native-born parents.

A. are more likely to commit delinquent and violent acts
B. are more likely to be obese
C. often achieve in school as well as or better
D. tend to report lower self-esteem

Correct answer: C

Rationale: According to the information provided in the text box 'CULTURAL INFLUENCES: Immigrant Youths: Adapting to a New Land' on page 32, students who are foreign-born or first-generation Americans often achieve in school as well as or better than students of native-born parents. This implies that they excel academically despite facing challenges related to cultural adaptation and assimilation. Choices A, B, and D are incorrect because the provided information specifically highlights the academic achievement of foreign-born or first-generation American students compared to students of native-born parents, not their likelihood of committing delinquent acts, obesity rates, or self-esteem levels.

4. Before the late 1800s, childbirth usually took place __________.

A. at home and was a family-centered event
B. at home, but away from other family members
C. in a hospital with trained midwives
D. in the home of a medical professional or in a hospital

Correct answer: A

Rationale: Before the late 1800s, childbirth usually took place at home and was a family-centered event. During this period, most women gave birth at home with the help of family members and possibly a midwife. Hospitals were not common settings for childbirth at that time. Choice B is incorrect because childbirth was not typically done away from family members. Choice C is incorrect because hospitals were not the common setting for childbirth before the late 1800s. Choice D is incorrect because giving birth in the home of a medical professional or a hospital was not the norm during that period.

5. By the end of Greta's first month of pregnancy, her embryo __________.

A. can sense its world
B. is about ¼ inch long
C. can suck its thumb
D. can curl its toes

Correct answer: B

Rationale: By the end of Greta's first month of pregnancy, her embryo is about ¼ inch long. During the first month of pregnancy, the embryo is in the very early stages of development, and its size is typically around ¼ inch as it continues to grow and develop in the uterus. Choices A, C, and D are incorrect because sensory abilities like sensing the world, sucking thumb, and curling toes develop later in the pregnancy as the embryo progresses through different stages of development.