chapter 27

List, in order, the phases of intercourse. Place the first phase at the top.

1. excitement 2. plateau 3. orgasm 4. resolution

Maximal sperm production occurs when the testes are at what temperature?

35 degrees Celsius

What is the time period from the onset of gonadotropin secretion and reproductive development until a person attains full adult height called?

Adolescence

Which vessels drains blood from the penis?

Deep dorsal vein

Choose all the structures that are located within the spermatic cord. Epididymis Ductus deferens Seminiferous tubule Testicular artery Dartos muscle Pampiniform plexus

Ductus deferens Pampiniform plexus Testicular artery

What are the two stages of ejaculation? Plateau Emission Orgasm Recovery Expulsion

Emission Expulsion

Which structure receives sperm from the efferent ductules and sends it on to the vas deferens?

Epididymis

the tissue that functions by swelling with blood, as is found in the penis and clitoris.

Erectile tissue

True or false: The maximal sperm production occurs when the testicular temperature is 37 degrees Celsius (98.6 degrees Fahrenheit).

False

What are four characteristics of the excitement phase of intercourse? Increased blood pressure Plateau Orgasm Decreased pulmonary ventilation Myotonia Increased heart rate Vasocongestion

Increased blood pressure Myotonia Increased heart rate Vasocongestion

Which describes a mature spermatozoon?

Pear-shaped head with a long tail

What is the region between the thighs bordered by the coccyx, pubic symphysis, and ischial tuberosities called?

Perineum

What are the four phases of intercourse? Plateau Excitement Sleep Orgasm Resolution Fertilization Recovery Attraction

Plateau Excitement Orgasm Resolution

Which cell undergoes meiosis I giving rise to two equal-size, haploid, and genetically-unique secondary spermatocytes?

Primary spermatocyte

What are the first few years of adolescence called?

Puberty

What is the pouch of skin, muscle, and fibrous connective tissue that contains the testes?

Scrotum

Where does spermatogenesis occur?

Seminiferous tubules

Choose all that the testes produce. Ova Sperm Follicle stimulating hormone Testosterone Luteinizing hormone

Sperm Testosterone

What is the entire process of sperm production called?

Spermatogenesis

Which is the stem cell that directly produces spermatocytes?

Spermatogonium

A pear-shaped head and long tail are the two major parts of which of the following?

Spermatozoon

What is the term for a mature sperm cell?

Spermatozoon

Male germ cells receive nutrients and protection from the immune system from which cells?

Sustentacular

Which normally pass through the inguinal canals?

Testes

What do interstitial cells produce?

Testosterone

What does it mean if structures are homologous?

They are derived from the same embryological structure.

True or false: Each testis is classified as both an endocrine and exocrine gland.

True

True or false: Elevated levels of FSH and LH in males may produce male climacteric, a condition with symptoms similar to female menopause.

True

During the excitement phase of intercourse, what is it called when the genitals swell with blood?

Vasocongestion

What are four characteristics of the excitement phase of intercourse? Orgasm Decreased pulmonary ventilation Plateau Vasocongestion Increased heart rate Myotonia Increased blood pressure

Vasocongestion Increased heart rate Myotonia Increased blood pressure

Falling levels of testosterone and inhibin may bring about a period of declining male reproductive function, called ______ .

andropause

Human somatic (body) cells are ______; they have ______ chromosomes. Multiple choice question.

diploid, 46

The two branches of the penile artery are the _____ artery and a deep artery.

dorsal

The two branches of the penile artery are the artery and a deep artery.

dorsal

A tissue that functions by swelling with blood is known as ______ a(n) tissue.

erectile tissue

Ejaculation occurs in two stages called emission and _____ .

expulsion

While somatic cells are diploid, gametes are ______ ; they have one copy of each type of chromosome.

haploid

While somatic cells are diploid, gametes are ______; they have one copy of each type of chromosome.

haploid

if an egg is fertilized with a Y-bearing sperm, it produces an XY zygote that is destined to become a ______.

male

LIn men, resolution is followed by a _____ period, lasting anywhere from 10 minutes to a few hours, in which it is usually impossible to attain another erection and orgasm.

refractory

The period of time after male orgasm, when it is not possible to retain erection or to ejaculate, is known as the _____ period.

refractory

The pouch of skin, muscle, and fibrous connective tissue that contains the testes is the ______.

scrotum

Meiosis I of spermatogenesis gives rise to two equal-size, haploid and genetically unique ______ spermatocytes.

secondary

A typical ejaculation results in the discharge of 2 to 5mL of a fluid called ______.

semen

The fluid expelled during male orgasm is called .

semen

The penis serves to deposit _____ in the vagina.

semen

The two Blank______ lie posterior to the bladder and produce a yellowish secretion that makes up about 60% of the semen.

seminal vesicles

The ______ are the site of sperm production.

seminiferous tubules

A testis is considered an exocrine gland because it produces Blank______.

sperm

A spermatozoon is a mature ______.

sperm cell

Which type of stem cell produces cells which, in turn, enter meiosis?

spermatogonium

True or false: A four week old fetus has the potential to produce both male or female gonads.

true