Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Textbook Question
Chapter 61, Problem 5PL
The embryonic stage of human development exists
a. from fertilization until implantation.
b. through the first four weeks of development.
c. through the first eight weeks of development.
d. from fertilization until birth.
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Identify a characteristic of a fetus in the sixth month of gestation.
a. It weighs between 5 and 7 pounds.
b. It can open and close its eyes and look in all directions.
c. It has fully developed reflex patterns.
d. It has a respiratory system that is adequate to survive outside the womb.
Which of the following statements is incorrect?a. The placenta secretes hormones such as progesterone, hCG, and estrogen.b. Embryonic tissue and maternal tissue forms the placenta.c. The chorion supplies nutrients to the embryo by diffusion.d. The umbilical cord is formed by one artery and two veins
The first week of human development is characterized by formation
of the:
A. inner cell mass
B. hypoblast
C. trophoblast
D. blastocyst
E. all of the above
Chapter 61 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 61 - The ovum and sperm unite and form a diploid cell...Ch. 61 - The ________ is the development stage that...Ch. 61 - Which of the following is not an extraembryonic...Ch. 61 - The placenta is comprised of a. only the...Ch. 61 - The embryonic stage of human development exists a....Ch. 61 - The zonapellucida gel layer surrounds the...Ch. 61 - A single completed oogenesis sequence produces...Ch. 61 - A single completed spermatogenesis sequence...Ch. 61 - Human gametes Contain ______________ chromosomes.Ch. 61 - The diploid number of human chromosomes found in...
Ch. 61 - To create genetic variation, ______________...Ch. 61 - To create genetic variation, ______________...Ch. 61 - The cell resulting from fertilization is called...Ch. 61 - Tiny cells that form during meiotic divisions of...Ch. 61 - Fertilization and early embryonic development...Ch. 61 - A solid ball of about sixteen cells is called a...Ch. 61 - The part of meiosis that is most similar to...Ch. 61 - Meiosis I reduces the chromosome number in half,...Ch. 61 - Implantation of the ____________ into the...Ch. 61 - The two-cell, four-cell, eight-cell, and morula...Ch. 61 - Match the terms in column A with the descriptions...Ch. 61 - Summarize your observations of any similarities...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The feature that distinguishes a fetus from an embryo is that the fetus has a. All of the organ systems. b. Three germ layers. c. A placenta. d. An amnion. e. Arm and leg buds.arrow_forwardThe development of a zygote into a baby involves pre-embryonic development for the first 2 weeks, followed by embryonic development for the next 6 weeks, and finally fetal development until the baby is born. When is the developing baby considered a fetus? Select one: a. When all major organ systems have formed b. After the neural tube forms c. Once gastrulation is complete d. When most major organ systems have formed; the neural system forms during the fetal stagearrow_forwardWhich of the following correctly identifies the different phases of human development? Select one: a. Weeks 1 to 8 are called the fetal development, and weeks 9 to 39 are called the embryonic development. b. Weeks 1 to 8 are called the embryonic development, and weeks 9 to 39 are called the fetal development. c. The 1st trimester is fertilization and mitosis, and the 2nd and 3rd trimesters involve differentiation. d. The 1st trimester is called the embryonic development, the 2nd trimester is called the fetal development, and the 3rd trimester is when the baby grows to gain more weight.arrow_forward
- Which of the following statements is NOT correct about the umbilical cord? Select one: a. The umbilical cord is formed from the chorion. b. The placenta connects to the embryon via the umbilical cord. c. The umbilical cord consists of two arteries and one vein. d. The umbilical cord is formed from the yolk sac and the allantois.arrow_forwardBody organs first begin to form and function during theperiod of the _________ ; within 6 months, during theperiod of the________ , the organs are sufficientlyfunctional to allow a good chance of survival.a. zygote; embryob. zygote; fetusc. embryo; fetusd. placenta; fetusarrow_forwardThe major development of organ systems takes place ina. weeks 1 and 2 of development.b. weeks 3–8 of development.c. weeks 8–20 of development.d. the last 30 weeks of development.arrow_forward
- 1. Embryonic development occurs during this period. A. from the ninth week of gestation to birth B. from fertilization to implantation C. from implantation to the end of the eighth week of gestation D. from conception to birth 2. Part of the gastrulation phase includes the formation of germ layers that will... A. go on to form the placenta. B. form the ectoderm, mesoderm, and endoderm that will become specific tissues and organs. C. spread disease. D. produce the amniotic fluid.arrow_forwardAll of these are Principles of Growth & Development except: a. Growth and development are influences by a multiple factor. b. Development occurs in a Cephalocaudal (The child’s pattern of growth is in a head-to-toe direction) and a Proximodistal progression (center to periphery). c. Development proceeds from the complex to the simple and from the general to the specific. d. There are critical periods for growth and development.arrow_forwardWhich developmental stage is mismatched? a. second week—implantation b. third week—heart development begins c. fourth and fifth week—limb buds appear d. sixth through eighth week—all organ systems present e. None of these stages are mismatched.arrow_forward
- Which of the following statements is NOT correct about the umbilical cord? a. The umbilical cord is formed from the yolk sac and the allantois. b. The umbilical cord is formed from the chorion. c. The umbilical cord consists of two arteries and one vein. d. The placenta connects to the embryon via the umbilical cord.arrow_forwardWhich of the following is false? a. The endoderm, mesoderm, ectoderm are germ layers. b. The trophoblast is a germ layer. c. The inner cell mass is a source of embryonic stem cells. d. The blastula is often a hollow ball of cells.arrow_forwardWhich of the following correctly identifies the different phases of human development? Select one: A. The 1st trimester is fertilization and mitosis, and 2nd and 3rd trimesters involve differentiation. B. Week 1 to 8 are called fetal development, and weeks 9 to 39 are called embryonic development. C. The 1st trimester is called embryonic development, the 2nd trimester is called fetal development, and the 3rd trimester is when the baby grows to gain more weight. D. Week 1 to 8 are called embryonic development, and weeks 9 to 39 are called fetal development.arrow_forward
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Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY