Question 1

Choose the one most appropriate answer for each.​
-LH​

Accepted Answer

LH, or luteinizing hormone, is a hormone that acts to trigger ovulation in females.

Answer: B
 The structures that secrete mucus and nutrients absorbable by sperm and open into the ejaculatory duct are the seminal vesicles.

Answer: C
 The yolk sac forms as an outgrowth of the embryo and becomes part of the umbilical cord and urinary bladder.

Answer: D
 There is no answer that corresponds to a drug that causes severely deformed arms and legs in developing embryos.

Answer: E
 The structures that connect seminiferous tubules with vasa deferentia are the rete testes.

Answer: F
 The opening between the uterus and vagina is the cervix.

Answer: G
 The organ that supplies the embryo/fetus with nutrients and removes wastes is the placenta.

Answer: H
 The structure that connects the epididymis with the ejaculatory duct is the vas deferens.

Answer: I
 The hormones that stimulate uterine contractions in the female are oxytocin.

Answer: J
 The cap over the head of a sperm, which contains lytic enzymes to penetrate egg membranes, is the acrosome.

Answer: K
 The inner cell mass plus trophoblast, which attaches to the uterine wall, is the blastocyst.

Answer: L
 The testosterone-secreting cells in the testis are the Leydig cells.

Answer: M
 The structure that is sensitive to sexual stimulation and develops from the same embryonic tissues as the penis in males is the clitoris.

Answer: N
 The uterine lining is the endometrium.

Answer: O
 The hormone that stimulates maturation of an ovarian follicle is follicle-stimulating hormone (FSH).

Question 2

​Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all.
-This cell is the first sex cell stage to be in the haploid state.

Accepted Answer

The secondary oocyte is the first sex cell stage to be in the haploid state, following meiosis I, where the chromosome number is halved from the diploid state.

Question 3

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all.​
-This continues to undergo mitosis throughout the reproductive life of the male.

Accepted Answer

Spermatogonium undergoes mitosis throughout the reproductive life of the male to maintain the population of germ cells.

Answer: C
 Primary spermatocytes are the result of spermatogonium undergoing mitosis and are the first stage of meiosis, which results in the formation of haploid sperm cells.

Answer: B
 Secondary spermatocytes are the result of the first meiotic division of primary spermatocytes and are haploid.

Answer: D
 Spermatids are the result of the second meiotic division of secondary spermatocytes and are haploid. They will develop into mature sperm cells through spermiogenesis.

Answer: E
 Sperm is the final stage of sperm development, resulting from spermatids going through a process called spermiogenesis that transforms them into mature, motile sperm cells.

Question 4

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all.​
-This is a mitotic product that then undergoes meiosis.

Accepted Answer

The primary spermatocyte is the mitotic product of a spermatogonium and undergoes meiosis to form secondary spermatocytes.

Question 5

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all.​
-This represents the product of the first meiotic division.

Accepted Answer

The product of the first meiotic division in sperm development is the secondary spermatocyte. This stage follows the primary spermatocyte stage, where the cell undergoes meiosis I to produce two haploid secondary spermatocytes.

Question 6

​Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all.
-This cell divides by mitosis during the fetal stages of development until all of the approximately two million potential eggs have been formed.

Accepted Answer

The cell that divides by mitosis during fetal stages is called oogonium.

Answer: B
 The primary oocyte is the stage where each of the approximately two million potential eggs are arrested.

Answer: C
 The secondary oocyte is formed from the primary oocyte in the process of meiosis I.

Answer: D
 Polar body is a small cell produced during the meiosis of the oocyte that doesn't contain an egg.

Answer: E
 Corpus luteum is a temporary endocrine structure that develops from the ruptured ovarian follicle after ovulation. It produces progesterone to prepare the uterus for implantation. It is not involved in the development of the human egg.

Question 7

Choose the one most appropriate answer for each.​
-endometrium​

Accepted Answer

The endometrium is the lining of the uterus which thickens in preparation for implantation of a fertilized egg.

Answer: I
 Hormones such as oxytocin stimulate contractions of the smooth muscle in the uterus during labor and delivery.

Answer: K
 The blastocyst is comprised of the inner cell mass and the trophoblast, and it is the structure that implants in the endometrium.

Answer: L
 Cells called Leydig cells in the testes secrete testosterone, which is responsible for the development of secondary sex characteristics in males.

Answer: M
 The clitoris is a highly sensitive organ in females that is homologous to the penis in males.

Answer: O
 Follicle-stimulating hormone (FSH) stimulates the maturation of an ovarian follicle, which contains an immature egg.

Question 8

Choose the one most appropriate answer for each.​
-seminal vesicles​

Accepted Answer

Seminal vesicles secrete mucus and nutrients that can be absorbed by sperm and open into the ejaculatory duct.

Answer: M
 Clitoris is sensitive to sexual stimulation and develops from the same embryonic tissues as the penis in males.

Answer: G
 Placenta is an organ that supplies the embryo/fetus with nutrients and removes wastes during pregnancy.

Answer: L
 Leydig cells are testosterone-secreting cells in the testis.

Answer: K
 Blastocyst is the inner cell mass plus trophoblast and attaches to the uterine wall during implantation.

Answer: O
 Follicle-stimulating hormone (FSH) stimulates the maturation of an ovarian follicle in females.

Question 9

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all.​
-This is the first stage of development where the male sex cell is haploid.

Accepted Answer

The secondary spermatocyte is the first stage in sperm development where the cell is haploid, having completed meiosis I.

Question 10

Choose the one most appropriate answer for each.​
-epididymis​

Accepted Answer

The epididymis is a tube-like structure that connects the seminiferous tubules with the vasa deferentia. There are two epididymides in the male reproductive system.

Answer: L
 Leydig cells are testosterone-secreting cells that are found in the testes.

Answer: H
 The vas deferens connects the epididymis with the ejaculatory duct in the male reproductive system.

Question 11

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all.​
-The male sex cell is fully formed at this stage of development.

Accepted Answer

The fifth stage of sperm development is the mature sperm, which is fully formed and ready for fertilization.

Question 12

Choose the one most appropriate answer for each.​
-oxytocin​

Accepted Answer

Oxytocin is a hormone that stimulates uterine contractions in the female.

Question 13

​Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all.
-This stage lies dormant between birth and puberty.

Accepted Answer

?

Question 14

Choose the one most appropriate answer for each.​
-vas deferens

Accepted Answer

The vas deferens connects the epididymis with the ejaculatory duct, allowing sperm to travel from the testes to the urethra.

Answer: K
 The inner cell mass and trophoblast together form the blastocyst, which attaches to the uterine wall during implantation.

Answer: L
 Leydig cells are responsible for secreting testosterone in the testes, helping to promote male sexual development and maintenance.

Answer: M
 The clitoris is a highly sensitive organ that is analogous to the penis in males, developing from similar embryonic tissues.

Answer: O
 Follicle-stimulating hormone (FSH) is a hormone that promotes the maturation and development of ovarian follicles in females.

Question 15

Choose the one most appropriate answer for each.​
-placenta

Accepted Answer

The placenta is the organ that supplies the embryo/fetus with nutrients and removes wastes.

Answer: K
 The inner cell mass plus trophoblast attach to the uterine wall and form the placenta.

Answer: O
 Hormones that stimulate maturation of an ovarian follicle are responsible for triggering ovulation in females.

Question 16

​Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all.
-This cell becomes the mature egg only after fertilization.

Accepted Answer

The secondary oocyte is the cell that becomes the mature egg only after fertilization. The other choices involve earlier stages or structures in the development of the human egg, such as the oogonium (a stem cell that gives rise to the primary oocyte), the primary oocyte (which undergoes meiosis to become a secondary oocyte), the polar body (a non-functional byproduct of meiosis), and the corpus luteum (a temporary endocrine structure that forms after ovulation).

Question 17

​Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all.
-This cell contains a full haploid set of chromosomes but will never be fertilized.

Accepted Answer

The polar body is a small cell that contains a haploid set of chromosomes but will never be fertilized. It is produced during the meiotic division of the primary and secondary oocytes.

Question 18

Choose the one most appropriate answer for each.​
-Leydig cells​

Accepted Answer

Leydig cells are testosterone-secreting cells in the testis.

Question 19

Choose the one most appropriate answer for each.​
-clitoris​

Accepted Answer

The clitoris is a sensitive organ that develops from the same embryonic tissues as the penis in males.

Answer: K
 The inner cell mass plus trophoblast attach to the uterine wall and form the placenta.

Answer: O
 Follicle-stimulating hormone (FSH) stimulates the maturation of an ovarian follicle, which contains an immature egg.

Question 20

Choose the one most appropriate answer for each.​
-FSH​

Accepted Answer

FSH (follicle-stimulating hormone) stimulates the maturation of ovarian follicles in females.

Answer: B
 Seminal vesicles are structures that secrete mucus and nutrients absorbable by sperm; they open into the ejaculatory duct.

Answer: C
 The allantois forms as an outgrowth of the yolk sac; it becomes part of the umbilical cord and urinary bladder.

Answer: D
 Thalidomide is a drug that causes severely deformed arms and legs in developing embryos.

Answer: E
 The epididymis consists of a head, body, and tail and is connected to the vas deferens by the efferent ductules.

Answer: F
 The cervix is the opening between the uterus and the vagina.

Answer: G
 The placenta is an organ that supplies the embryo/fetus with nutrients and removes wastes.

Answer: H
 The vas deferens connects the epididymis with the ejaculatory duct.

Answer: I
 Prostaglandins are hormones that stimulate uterine contractions in females.

Answer: J
 The acrosome is a cap over the head of the sperm that contains lytic enzymes to penetrate the egg membranes.

Answer: K
 The blastocyst consists of the inner cell mass plus trophoblast; it attaches to the uterine wall.

Answer: L
 Leydig cells are testosterone-secreting cells located in the testis.

Answer: M
 The clitoris is sensitive to sexual stimulation and develops from the same embryonic tissues as does the penis in males.

Answer: N
 The endometrium is the uterine lining that undergoes cyclic changes during the menstrual cycle.

Answer: O
 FSH (follicle-stimulating hormone) stimulates the maturation of ovarian follicles in females.

Quiz 41: Animal Reproductive Systems

Choose the one most appropriate answer for each. -LH

Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all. -This cell is the first sex cell stage to be in the haploid state.

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all. -This continues to undergo mitosis throughout the reproductive life of the male.

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all. -This is a mitotic product that then undergoes meiosis.

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all. -This represents the product of the first meiotic division.

Choose the one most appropriate answer for each. -endometrium

Choose the one most appropriate answer for each. -seminal vesicles

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all. -This is the first stage of development where the male sex cell is haploid.

Choose the one most appropriate answer for each. -epididymis

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all. -The male sex cell is fully formed at this stage of development.

Choose the one most appropriate answer for each. -oxytocin

Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all. -This stage lies dormant between birth and puberty.

Choose the one most appropriate answer for each. -vas deferens

Choose the one most appropriate answer for each. -placenta

Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all. -This cell becomes the mature egg only after fertilization.

Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all. -This cell contains a full haploid set of chromosomes but will never be fertilized.

Choose the one most appropriate answer for each. -Leydig cells

Choose the one most appropriate answer for each. -clitoris

Choose the one most appropriate answer for each. -FSH

Quiz 41: Animal Reproductive Systems

Choose the one most appropriate answer for each.​ -LH​

​Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all. -This cell is the first sex cell stage to be in the haploid state.

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all.​ -This continues to undergo mitosis throughout the reproductive life of the male.

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all.​ -This is a mitotic product that then undergoes meiosis.

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all.​ -This represents the product of the first meiotic division.

Choose the one most appropriate answer for each.​ -endometrium​

Choose the one most appropriate answer for each.​ -seminal vesicles​

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all.​ -This is the first stage of development where the male sex cell is haploid.

Choose the one most appropriate answer for each.​ -epididymis​

Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all.​ -The male sex cell is fully formed at this stage of development.

Choose the one most appropriate answer for each.​ -oxytocin​

​Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all. -This stage lies dormant between birth and puberty.

Choose the one most appropriate answer for each.​ -vas deferens

Choose the one most appropriate answer for each.​ -placenta

​Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all. -This cell becomes the mature egg only after fertilization.

​Respond to the following statements in reference to the five stages or structures involved in the development of the human egg. Answers may be used more than once or not at all. -This cell contains a full haploid set of chromosomes but will never be fertilized.

Choose the one most appropriate answer for each.​ -Leydig cells​

Choose the one most appropriate answer for each.​ -clitoris​

Choose the one most appropriate answer for each.​ -FSH​