Chapter 46 DSM

Vestibular (Bartholin's) glands __________.

*Secrete* a lubricating fluid

Seasonal changes can be important to reproduction because ___________.

All of the listed responses are correct.

Which of the following is the correct sequence of stages in the development of sperm during the process of spermatogenesis?

Spermatogonial stem cell; spermatogonium; primary spermatocyte; secondary spermatocyte; early spermatid; sperm cell

In the human female ovarian cycle, ovulation is triggered by a sharp rise in luteinizing hormone (LH). What is the cause of this sharp rise?

A rise in estradiol from the follicle

At what point does the secondary oocyte complete meiosis?

After the sperm penetrates the oocyte

Which part of the human sperm carries a haploid set of chromosomes?

Head

Which reproductive method is the most prevalent in mammals?

Internal fertilization

What is an advantage of internal fertilization?

Internal fertilization can occur outside of aquatic or marine habitats

What is the relationship between Leydig cells and Sertoli cells?

Leydig cells stimulate the production of sperm cells, and Sertoli cells nourish developing sperm.

Which of the following is an accurate statement concerning mating behavior in asexually reproducing species?

Mating behavior is a stimulus that can help to bring about ovulation in asexually reproducing species.

Which of the following is an accurate statement about sexual reproduction?

Most animals produce offspring by sexual reproduction.

Which of the following is a difference between the reproduction of humans (and other primates) and the reproduction of all other mammals?

Only humans (and other primates) have menstrual cycles.

Which of the following is an accurate statement about parthenogenesis?

Parthenogenesis appears rarely in vertebrates.

Which of the following is the least effective method of birth control?

Rhythm method

Which of the following is not a function of the placenta?

Secreting hCG

Which of the following is the correct path that sperm travel when leaving the body of a human male?

Seminiferous tubule; epididymis; vas deferens; ejaculatory duct; urethra

Birth control pills contain synthetic estrogen and progesterone. How do these hormones prevent pregnancy?

They inhibit the pituitary from secreting FSH and LH, preventing ovulation.

Which structure is part of the excretory and reproductive systems in males?

Urethra

From a single cell, oogenesis in a mammal will produce __________.

an egg and two or three polar bodies

A hermaphrodite is ___________.

an individual with both male and female reproductive systems

Pheromones are __________.

generally effective at very low concentrations

In mammals, meiosis to produce the female egg cell is initiated in the __________.

ovary

Immediately after ovulation, an egg is collected into the __________.

oviduct

Individuals clustered in the same area that release their gametes into the water at the same time are engaging in __________.

spawning

Some insect females are able to store sperm in __________ until environmental conditions are favorable for the development of their offspring.

spermathecae

The human female's external reproductive structures are ___________.

the clitoris, two sets of labia, and vaginal opening

The "two-fold" cost of sex refers to ___________.

the lower number of reproductive offspring produced by individuals of species that have two sexes

Which of the following choices correctly lists the four phases of the sexual response cycle in their proper sequence?

Excitement, plateau, orgasm, and resolution

An ovarian follicle undergoes several changes during the human female's menstrual cycle. Which of the following sequences is correct, beginning with the oocyte?

Follicle development, ovulation, and corpus luteum development

Which of the following is a means of sexual reproduction?

Fusion of egg and sperm