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Ch. 27 The Reproductive System
Marieb - Human Anatomy & Physiology 11th Edition
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoMarieb, Hoehn 11th EditionCh. 27 The Reproductive SystemProblema 3
Capitolo 27, Problema 3

The structures that draw an ovulated oocyte into the female duct system are:
a. Cilia
b. Fimbriae
c. Microvilli
d. Stereocilia

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1
Understand the anatomy of the female reproductive system, specifically the role of the uterine (fallopian) tubes in transporting the ovulated oocyte.
Learn about the fimbriae, which are finger-like projections located at the end of the uterine tube near the ovary. These structures play a key role in capturing the ovulated oocyte.
Recognize that the fimbriae create a sweeping motion to guide the oocyte into the uterine tube. This motion is assisted by cilia lining the inner surface of the uterine tube, which help propel the oocyte further along the duct system.
Differentiate between the listed options: Cilia are hair-like structures that move fluid and particles, fimbriae are specialized projections for capturing the oocyte, microvilli are involved in absorption and secretion, and stereocilia are non-motile structures found in the male reproductive system.
Conclude that the correct answer is 'b. Fimbriae,' as they are the specific structures responsible for drawing the ovulated oocyte into the female duct system.

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Fimbriae

Fimbriae are finger-like projections at the end of the fallopian tubes that play a crucial role in the reproductive process. They help to capture the ovulated oocyte from the ovary and guide it into the tube for potential fertilization. Their movement is coordinated with the menstrual cycle, making them essential for successful conception.

Cilia

Cilia are microscopic, hair-like structures that line the fallopian tubes and other parts of the female reproductive tract. They beat in a coordinated manner to help move the oocyte and sperm through the reproductive system. Their function is vital for ensuring that the oocyte reaches the site of fertilization efficiently.
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Cilia & Flagella

Oocyte

An oocyte is the female gamete or egg cell involved in reproduction. It is produced in the ovaries and undergoes maturation during the menstrual cycle. Understanding the role of the oocyte is essential for comprehending the processes of ovulation, fertilization, and early embryonic development.
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Anatomy of the Female Reproductive System Example 1
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Relative to differences between mitosis and meiosis, choose the statements that apply only to events of meiosis:

a. Tetrads present

b. Produces two daughter cells

c. Produces four daughter cells

d. Occurs throughout life

e. Reduces the chromosomal number by half

f. Synapsis and crossing over of homologous occur

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The normal diploid number of human chromosomes is:

a. 48

b. 47

c. 46

d. 23

e. 24

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The usual site of embryo implantation is:

a. The uterine tube

b. The peritoneal cavity

c. The vagina

d. The uterus

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Secondary sex characteristics are:

a. Present in the embryo

b. A result of male or female sex hormones increasing in amount at puberty

c. The testis in the male and the ovary in the female

d. Development of male and female external genitalia

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Which of the following is correct relative to female anatomy?

a. The vaginal orifice is the most dorsal of the three openings in the perineum.

b. The urethra is between the vaginal orifice and the anus.

c. The anus is between the vaginal orifice and the urethra.

d. The urethra is the more ventral of the two orifices in the vulva.

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