Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 27, Problem 6CYR
Summary Introduction
To review:
The blank spaces in the statement, “The blastocyst has two distinct cell populations: large, flat cells called the _______; and a cluster of round cells called the ______”.
Introduction:
In the fourth day of reproductive development, a glycogen-rich secretion passes through the endometrial glands inside the lumen of the uterus known as uterine milk. This substance provides nourishment to the conceptus. The conceptus which is now called as blastocyst comes out from the zonal pellucid and the blastomeres surround an internal fluid-filled cavity.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
TRUE OF FALSE
Primary spermatocytes are diploid in number like spermatogonia while spermatocytes are haploid in number.
Spermatogenesis is the final stage of reproductive cell division by which there is the development of haploid spermatids into sperm. Spermiation is the event by which sperm are released from their connections to Sertoli cells.
Digestive secretions from the small intestine complete the digestion of carbohydrates, proteins, and lipids. Bacteria in the large intestines produce minerals and nucleic acids.
Infertility strikes both men and women. Describe in a summary the biological causes that impair the process of conception in both males and females. Besides mentioning specific reasons of infertility in males and females, you need to include in your answer other cause(s) that might be the result of a combination of factors originating from both men and women.
Amniocentesis for sex determination is banned in our country. Is this ban necessary? Comment.
Chapter 27 Solutions
Human Anatomy & Physiology (2nd Edition)
Ch. 27.1 - What are the three major periods of prenatal...Ch. 27.1 - 2. When does the postnatal period of life begin?
Ch. 27.2 - Prob. 1QCCh. 27.2 - What are the steps of fertilization?Ch. 27.2 - 3. What is the function of cleavage of the...Ch. 27.2 - How does a morula differ from a blastocyst?Ch. 27.2 - 5. What is the ultimate fate of the inner cell...Ch. 27.2 - 6. Which cell type secretes hCG?
Ch. 27.2 - 7. What are the functions of amniotic fluid?
Ch. 27.2 - 8. What are the main functions of each of the...
Ch. 27.3 - Prob. 1QCCh. 27.3 - 2. Which cells form the three germ layers?
Ch. 27.3 - 3. What are the two types of embryonic folding?...Ch. 27.3 - What is the first major event that occurs during...Ch. 27.3 - Prob. 5QCCh. 27.4 - Prob. 1QCCh. 27.4 - Prob. 2QCCh. 27.4 - What specific changes occur in each month of fetal...Ch. 27.4 - Prob. 4QCCh. 27.5 - Prob. 1QCCh. 27.5 - Prob. 2QCCh. 27.5 - Which hormone stimulates the beginning of...Ch. 27.5 - Prob. 4QCCh. 27.6 - What are the criteria used to determine a newborns...Ch. 27.6 - Prob. 2QCCh. 27.6 - 3. Explain what happens to each structure in the...Ch. 27.6 - Prob. 4QCCh. 27.6 - What role do hormones play in the let-down reflex...Ch. 27.7 - What is the genome? How many chromosomes are in...Ch. 27.7 - Prob. 2QCCh. 27.7 - 3. How does a genotype differ from a phenotype?
Ch. 27.7 - Prob. 4QCCh. 27.7 - Prob. 5QCCh. 27.7 - 6. What is an X-linked disorder? How can a female...Ch. 27 - Match the correct time period of gestation with...Ch. 27 - Prob. 2CYRCh. 27 - Mark the following statements about fertilization...Ch. 27 - Prob. 4CYRCh. 27 - Number the sequence of events in fertilization....Ch. 27 - Prob. 6CYRCh. 27 - Match the extraembryonic membrane with the correct...Ch. 27 - Prob. 8CYRCh. 27 - Match the structures of the embryo with the...Ch. 27 - What are the two types of embryonic folding?Ch. 27 - Prob. 11CYRCh. 27 - Prob. 12CYRCh. 27 - Prob. 13CYRCh. 27 - Prob. 14CYRCh. 27 - Prob. 15CYRCh. 27 - Prob. 16CYRCh. 27 - 17. Fill in the blanks: The first ____________...Ch. 27 - Prob. 18CYRCh. 27 - Prob. 19CYRCh. 27 - Which pattern of inheritance includes examples of...Ch. 27 - Prob. 1CYUCh. 27 - Why is the single-celled zygote approximately the...Ch. 27 - Prob. 3CYUCh. 27 - Prob. 4CYUCh. 27 - Prob. 1AYKACh. 27 - Prob. 2AYKACh. 27 - Prob. 3AYKACh. 27 - Prob. 4AYKACh. 27 - Prob. 5AYKB
Knowledge Booster
Learn more about
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
- V. Sequence of Events: Spermatogenesis Thousands of sperm are produced each second. Insert numbers in the spaces provided to arrange the events of spermatogenesis in the proper order. A Daughter cells of spermatogonia differentiate into slightly larger cells called primary spermatocytes, which move toward the lumen of the seminiferous tubule. _B Spermatids differentiate to form heads and tails and eventually transform into mature spermatozoa (sperm), each with 23 chromosomes _C Each secondary spermatocyte divides to form two spermatids. D Spermatogonia in the walls of the seminiferous tubules divide by mitosis to produce two daughter cells, each with 46 chromosomes. E. Through meiosis, the primary spermatocyte yields two genetically unique secondary spermatocytes, each with 23 chromosomes.arrow_forwardDuring cleavage, the _______ is converted to a ball of cells, which in turn is transformed into the __________. a. zygote; blastocyst b. trophoblast; embryonic disk c. ovum; embryonic disk d. blastocyst; embryonic diskarrow_forwardFigure 43.17 Which of the following statements about the menstrual cycle is false? Progesterone levels rise during the luteal phase of the ovarian cycle and the secretory phase of the uterine cycle. Menstruation occurs just after LH and FSH levels peak. Menstruation occurs after progesterone levels drop. Estrogen levels rise before ovulation, while progesterone levels rise after.arrow_forward
- estion In polycystic ovarian syndrome, androgens can be produced in excess. What effects would this potentially have? C Menstrual irregularity Acne hirsutism (hair on face and abdomen) all of these MacBook Pro Search or type URL +arrow_forwardOocytes develop in a multicellular structure, the follicle. After ovulation, most of the follicle cells remain in the ovary, forming a temporary endocrine gland, the_______. This gland disintegrates about 10 days afterovulation unless stimulated by a hormone,_______ ,secreted by the developing embryo.arrow_forwardSome Functions of the Female Reproductive System 1. transports the ovum from the ovary to the Fallopian tubes 2. supplied richly with blood vessels to support the fertilized egg 3. the entrance for sperm as well as the birth canal for the fetus 4. site of fertilization 5. opening to the uterus Match the functions of the female reproductive system numbered above with their structure below. Number: Structure: Vagina Endometrium Fallopian tubes Cervixarrow_forward
- Bleeding occurs when there is no fertilization. Low levels of both _____1____and ___2___ make the blood vessels of the endometrium constrict, cutting off bloodflow to the uterine lining. Ovulation occurs in the ovaries at the end of this stage,usually around day 14, triggered by a surge in the ____3_______ from the anteriorpituitary gland. ____4______ happens on Days 15-28. This phase is from ovulationto the start of the next menses. Endometrial glands secrete ___5___, whichprepares the uterus to receive a fertilized ovum.arrow_forward1 Select one: OA. Structure 10 OB. Structure 11 C. Structure 12 D. Structure 13 2 Male Reproductive System Endometrial tissue is typically only found in which structure labelled above? 5 6 8 9 10 Female Reproductive System 12 13 Endometriosis occurs when endometrial tissue is found in a location other than the uterus. The tissue builds up and breaks down with each menstrual cycle, causing severe pain and leading to scarring of other reproductive organs.arrow_forwardParthenogenesis isa. the process by which the germ layers form.b. involved in the formation of the notochord.c. the formation of sperm.d. the development of an unfertilized egg.arrow_forward
- The........is a hollow ball of cells that develops from the morula blastocyst ovidiuct ovary chorion Please I need a quicker responsearrow_forwardHuman Reproductive System has a lot of surprising facts that maybe you haven't heard about; one of them is that it contains the largest and smallest human cells. But, there are a lot of more surprising facts. Mention some of them, explain a little about these facts.arrow_forwardas possible, because a In oogenesis it is important to produce an egg with as much fertilized egg must repeatedly and produce numerous daughter cells.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Types of Human Body Tissue; Author: MooMooMath and Science;https://www.youtube.com/watch?v=O0ZvbPak4ck;License: Standard YouTube License, CC-BY