Exam 26: Reproduction and Development

Which of the following is an aspect of asexual reproduction that is sometimes disadvantageous?

Scenario Questions Please read the following paragraph and then answer the following questions. Birth control methods act at many points in the reproductive cycle. Some options, such as birth control pills, are highly effective at preventing pregnancy. However, only a few commonly available methods are effective at preventing the transmission of sexually transmitted disease (STD). The Center for Disease Control estimates that each year about 10 million new STD infections strike people ages 15 to 24. -Which of the following birth control methods provides the most effective protection against pregnancy and sexually transmitted disease for sexually active people?

Gastrulation ________.

All of these are similarities between the male and female system EXCEPT one.Choose the exception.

When does the human embryo implant in the wall of the uterus?

Which one of the following is a result of programmed cell death?

Please read the following paragraph and then answer the following questions. Two researchers addressed the generally accepted idea that boxer shorts are better for male fertility than briefs because they lower testicular temperature. They begin by saying, "Although this idea is regarded as dogma by many in the lay community and the changing of underwear type is a therapy frequently recommended by medical practitioners, there is a paucity of data measuring scrotal temperature as a function of underwear type. ("Munkelwitz, Robert, and Gilbert, Bruce R. "Are boxer shorts really better? A critical analysis of the role of underwear type in male subfertility." The Journal of Urology, 160.4 (1998): 1329-1333.) -The data below are average temperatures from an experiment with more than 100 men in boxers and in briefs. Boxers Briefs Core Body temp 36.6 36.5 Surface skin temp 30.8 30.9 Scrotal skin temp 33.8 33.6 What conclusion can be drawn from these data?

Scenario Questions Please read the following paragraph and then answer the following questions. Birth control methods act at many points in the reproductive cycle. Some options, such as birth control pills, are highly effective at preventing pregnancy. However, only a few commonly available methods are effective at preventing the transmission of sexually transmitted disease (STD). The Center for Disease Control estimates that each year about 10 million new STD infections strike people ages 15 to 24. -A vasectomy ________.

Please read the following paragraph and then answer the following questions. Two researchers addressed the generally accepted idea that boxer shorts are better for male fertility than briefs because they lower testicular temperature. They begin by saying, "Although this idea is regarded as dogma by many in the lay community and the changing of underwear type is a therapy frequently recommended by medical practitioners, there is a paucity of data measuring scrotal temperature as a function of underwear type. ("Munkelwitz, Robert, and Gilbert, Bruce R. "Are boxer shorts really better? A critical analysis of the role of underwear type in male subfertility." The Journal of Urology, 160.4 (1998): 1329-1333.) -Which of these describes the best experimental design to test the idea that scrotal temperature is less with boxers than with briefs?

Which of the following types of pathogens cause sexually transmitted diseases that are generally NOT curable?

In a human female reproductive system,the ________.

At about what point in gestation can an ultrasound exam determine the sex of the fetus?

What moves the human egg through the oviduct?

Examine the embryo in the following figure.The hands and feet of this embryo appear paddle-like,with no distinct toes or fingers.What process is needed to define each of the toes and fingers?

-According to the diagram above,after a vasectomy (within the scrotal sac),________.

Which of these is NOT a legal or physical disadvantage of current reproductive technologies?

Mesoderm gives rise to the ________.

Hermaphrodites ________.

Where does the embryo normally implant?

The figure shows oogenesis.What is the function of the polar bodies that are produced during oogenesis? They are a mechanism that allows for ________.