Advertisement Upgrade to remove ads

Chapter 27/28

Which of the following is considered a primary sex organ in females?

ovary

Sperm is produced in the _____ of the testes.

seminiferous tubules

Sperm is stored in the ______.

epididymis

Which of the following does not add substances to seminal fluid?

Urethra

The number of chromosomes in a human gamete is ____; this is referred to as the _______ chromosome number.

23; haploid

The dartos and cremaster muscles are important to the integrity of the male reproductive system. Which of the following is true about the role they play?

They regulate the temperature of the testes.

Which of the following glands are responsible for 60% of the synthesis of semen?

seminal vesicles

The cells that produce testosterone in the testis are called ________.

interstitial cells

Surgical cutting of the ductus deferens as a form of birth control is called a(n) ________.

vasectomy

It is necessary for the testes to be kept below body temperature.

true

A 38-year-old male is upset about his low sperm count and visits a "practitioner" who commonly advertises his miracle cures of sterility. The practitioner is a quack who treats conditions of low sperm count with megadoses of testosterone. The patient experiences a huge surge in libido. Would this treatment result in a higher or lower sperm count, and why?

Lower sperm count. High levels of testosterone inhibit the release of GnRH, inhibiting FSH release, resulting in inhibition of spermatogenesis.

The release of _____ encourages interstitial cells to release _____.

luteinizing hormone; testosterone

Which of the following female sex hormones is most responsible for estrogenic effects?

Estradiol

The _____ connects the uterus to the vagina.

cervix

Human egg and sperm are similar in that ________.

Same number of chromosomes

The constancy of the chromosome number from one cell generation to the next is maintained through ________.

mitosis

Select the correct statement about male sexual response

Erection is the result of vascular spaces in the erectile tissues filling with blood.

The secretions of the bulbourethral glands neutralize traces of acidic urine in the urethra and serve as a lubricant during sexual intercourse

true

Which of the following is false regarding the vagina of an adult female?

The pH of the adult vagina is alkaline

During the secretory phase of the uterine cycle:

the endometrium prepares for implantation

The primary function of the uterus is to ________.

receive, retain, and nourish a fertilized ovum

Fertilization generally occurs in the ________.

fallopian tubes

The Pap smear is a test to detect cancerous changes in cells of the cervix.

true

The soft mucosal lining of the uterus is the endometrium

true

Which of the following can be cured?

Chlamydia

What is the role of the corpus luteum?

to produce hormones that maintain the uterine lining during the first months of pregnancy

In humans, separation of the cells at the two-cell state following fertilization may lead to the production of twins, which in this case would be ________.

Identical

Effects of estrogen include ________.

growth of the breasts at puberty

Normally menstruation occurs when ________.

blood levels of estrogen and progesterone decrease

Which hormone is absolutely necessary for ovulation to occur?

LH

Which of the following statements about the female reproductive process is not true?

Rebuilding the endometrium is under the control of prolactin.

Men have only one ___ but have two of all the rest of these.

Prostate gland

The small paired structures at the base of the penis that produce a lubricating secretion are the

bulbourethral glands.

Polyspermy in humans results in

a nonfunctional zygote.

The reproductive system

nourishes gametes
stores and transports gametes
produces gametes

The following is a list of structures in the male reproductive system:

1. ductus deferens

2. urethra

3. ejaculatory duct

4.epididymis

4, 1, 3, 2

The genetic sex of a child is determined by

the sperm.

Which male hormone inhibits the secretion of FSH?

inhibin

The fertilized egg is known as the ____________.

zygote

Sperm freshly deposited in the female vagina are incapable of fertilizing an egg. What must happen first?

capacitation

The result of polyspermy in humans is ________.

a nonfunctional zygote

The correct sequence of preembryonic structures is ________.

zygote, morula, blastocyst

The period from fertilization through week eight is called the embryonic period.

true

Which of the following is the primary germ layer that forms the basis for the digestive, respiratory, and urogenital systems, and associated glands?

Endoderm

Which hormone maintains the viability of the corpus luteum?

human chorionic gonadotropin

Which of the following is true in reference to what may pass through the placental barriers?

nutrients, respiratory gases, wastes, and alcohol

A blastocyst is a hollow ball of cells, while the morula is a solid ball of cells.

true

The foramen ovale and the ductus arteriosus are both examples of:

pulmonary bypass shunts, which serve to bypass the lungs.

A
Which of the following is the longest stage of labor, lasting 6-12 hours or more?

Dilation stage

Which of the following structures is derived from the ectoderm?

brain and spinal cord

The umbilical arteries carry ________.

waste products to the placenta

At what period of fetal development are all body systems present in at least rudimentary form?

8 weeks post fertilization

In which stage of labor does crowning occur?

expulsion

An episiotomy is an incision made to widen the vaginal orifice, aiding fetal expulsion.

true

What does the foramen ovale become at birth?

Fossa ovalis

Which of the following is not a correct matching of a fetal structure with what it becomes at birth?

ductus arteriosus-ligamentum teres

The birth control pill is the most common and most effective birth control method.

True

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set