Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 21, Problem 4TY
Summary Introduction
Introduction:
Sperm refers to the haploid sex cell that is responsible for fusion with ovum and fertilizes it. Sperm cells contain four parts. These are head, neck, midpiece, and flagellum or tail. Head contains acrosome, the neck has one typical and one atypical centriole, the central filamentous core is known as midpiece, and the last part is a type of cilium, which is called tail that provides the movement of sperm. Sperms of animals generated from the cell called spermatozoa by the process called spermatogenesis. Spermatogenesis takes place within the male gonad called testicles.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The placenta function to
Select one:
A. Produce blood cells
B. Provide nutrition for the growing fetus
C. Exchange nutrients and wastes
D. Creat amniotic fluid
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 structure develops into only the fetus?
A. Blastocyte
B. Zygote
C. Trophoblast
D. Inner cell mass
Chapter 21 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Ch. 21 - Prob. 1QCCh. 21 - Prob. 2QCCh. 21 -
1. Why does only one sperm fertilize the egg, and...Ch. 21 - Prob. 2CRCh. 21 - Prob. 3CRCh. 21 - Describe the stages of labor and delivery.Ch. 21 - What causes the newborn to take its first breath...Ch. 21 - Prob. 6CRCh. 21 - What causes the onset of puberty (sexual...Ch. 21 - Summarize the three main hypotheses of the causes...
Ch. 21 - Prob. 9CRCh. 21 - Prob. 10CRCh. 21 - Which of the following lists the correct order of...Ch. 21 - Which of the following will result in fraternal...Ch. 21 -
3. Which of the following processes is the first...Ch. 21 - Prob. 4TYCh. 21 - Prob. 5TYCh. 21 - Prob. 6TYCh. 21 -
7. Which of the following is mismatched?
a....Ch. 21 - Prob. 8TYCh. 21 - Prob. 9TYCh. 21 -
10. Which of the following would be detrimental...Ch. 21 - Prob. 11TYCh. 21 - Prob. 12TYCh. 21 - Prob. 13TYCh. 21 - Prob. 14TYCh. 21 - Which hormone plays a critical role both in...Ch. 21 - Prob. 1AWKCh. 21 - Prob. 2AWKCh. 21 - Prob. 3AWKCh. 21 - Each year, it is estimated that over 40,000...Ch. 21 - Prob. 5AWKCh. 21 - Prob. 6AWKCh. 21 - How is it possible that one's life could be...
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
- Nutrient and waste requirements for the developing fetus are handled during the first few weeks by _____. a. the placenta b. diffusion through the endometrium c. the chorion d. the blastocystarrow_forwardWhich secretory unit of the lobule in the female breast produces milk a. Nipple b. Areola c. Lactiferous sinus d. Alveoliarrow_forwardWhich of the following structures develops into only the fetus? a. Inner cell mass b. Trophoblast c. Blastocyst d. Zygotearrow_forward
- The placenta functions to Select one: a. produce blood cells b. create amniotic fluid c. provide nutrition for the growing fetus d. exchange nutrients and wastesarrow_forwardWhich of the following occurs during a capacition A. Regeneration of placenta B. Involution of the uterus C. Release of digestive enzymes from the acrosome D. Decreased use of simple sugars for energy productionarrow_forwardChoose which tissue would line the fallopian tubes and function as a "conveyer belt" to help move a fertilized egg towards the uterus. a.stratified squamous epithelium b.ciliated simple columnar epithelium c.simple cuboidal epithelium d.smooth musclearrow_forward
- What important change happens to sperm in the female reproductive tract? (select one) a. Capacitation which increases sperm motility b. The activation of the microtubule motors in the sperm tail c. The outer dense fibres become less rigid d. The sperm head decondenses releasing the DNAarrow_forwardA 3-month-old male infant has a swelling in the inguinal area that increases when he cries. This finding is most likely caused by abnormal development of which of the following structures? a. genital tubercle b. labioscrotal swellings c. mesonephric ducts d. paramesonephric ducts e. processus vaginalis f. urogenital folds g. urogenital sinusarrow_forwardA gastrulation does NOT Select one: A. Consist of endoderm, mesoderm, and ectoderm B. Result in the formation of a third layer in the embryonic disc C. Involve the formnation of germ layers D. Include the differentiation of cells into tissues and organsarrow_forward
- Your laboring patient has transitioned to stage 2 of labor. What changes in the perineum indicate the birth of the baby is imminent? a. Increased in meconium stained fluid and retracting perineum b. Retracting perineum and anus with an increase of bloody show c. Bulging perineum and rectum with an increase in bloody show d. Rapid and intense contractionarrow_forwardWithout the motility of this structure in the female reproductive system, the ovulated egg would not make it to the fallopian tube. a. Corpus luteum b. Antrum c. Fimbrae d. Placenta e. Cervixarrow_forwardAfter the zygote undergoes several mitotic divisions, the resulting structure that implants in the endometrium is called Select one: a. zygote b. morula c. blastocyst d. embryonic discarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY