the ectoderm becomes the

ATI RN

Human Growth and Development Final Exam Answers

1. During prenatal development, the ectoderm becomes the __________.

A. muscles and skeleton
B. nervous system and skin
C. circulatory system and other internal organs
D. digestive system, lungs, urinary tract, and glands

Correct answer: B

Rationale: The correct answer is B: nervous system and skin. The nervous system, which includes the brain, spinal cord, and nerves, as well as the skin, develop from the ectoderm layer of cells during prenatal development. Choice A is incorrect because muscles and skeleton develop from mesoderm. Choice C is incorrect because the circulatory system and other internal organs develop from mesoderm and endoderm. Choice D is incorrect because the digestive system, lungs, urinary tract, and glands develop from endoderm.

2. In ecological systems theory, how does Toby's move just before entering fourth grade represent a significant change in his life?

A. Microsystem
B. Mesosystem
C. Exosystem
D. Chronosystem

Correct answer: D

Rationale: In ecological systems theory, the chronosystem refers to the dimension of time and how events and transitions over time can influence an individual's development. Toby's move just before entering fourth grade represents a significant change in his life that falls under the chronosystem. The microsystem involves the immediate environments and relationships that directly influence an individual, the mesosystem relates to connections between these environments, and the exosystem includes external settings that indirectly influence the individual, such as parents' workplaces. Therefore, Toby's move best exemplifies a change in the chronosystem due to the temporal influence on his development.

3. When classmates are asked to rate each other's likability, children get many positive votes, whereas children are seldom mentioned.

A. popular; neglected
B. neglected; rejected
C. popular; rejected
D. controversial; neglected

Correct answer: A

Rationale: The correct answer is A: 'popular; neglected.' Popular children are well-liked by their peers, hence they receive many positive votes. Neglected children, on the other hand, are often overlooked or ignored, resulting in them being seldom mentioned. Choice B is incorrect because neglected and rejected have different meanings. Choice C is incorrect as popular and rejected do not align with the likability context provided in the question. Choice D is incorrect as controversial does not directly relate to likability in the context of the question.

4. The embryonic disk __________.

A. becomes the new organism
B. is the outer ring of cells on a blastocyst
C. has a good chance of survival outside the womb
D. is a protective membrane that surrounds the amnion Answer: A Page Ref: 77 Skill Level: Understand Topic: Prenatal Development Difficulty Level: Moderate

Correct answer: A

Rationale: The embryonic disk becomes the new organism. It is a cluster of cells within the blastocyst that will develop into the fetus during the early stages of prenatal development. This cluster of cells is responsible for giving rise to all the tissues and organs of the developing organism.

5. What is the goal of applied behavior analysis?

A. outline changes in temperament over the lifespan
B. eliminate undesirable behaviors and increase desirable responses
C. examine how we think about ourselves and other people
D. synthesize information from various sources into a detailed picture of a person's personality

Correct answer: B

Rationale: The correct answer is B: "eliminate undesirable behaviors and increase desirable responses." Applied behavior analysis aims to modify behavior by focusing on eliminating unwanted behaviors and reinforcing desirable ones. It does not primarily deal with changes in temperament (choice A), self-perception (choice C), or personality traits (choice D). The approach involves techniques such as reinforcement to target specific behaviors, rather than broader cognitive processes or personality characteristics.