Ch 27 28 29 Reproduction

Digestion of the zona pellucida occurs because of the

acrosomal reaction

Degeneration of developing follicles before they become fully mature is called:

atresia

Which of the following explains Down syndrome

autosomal trisomy

The sickling allele in the hemoglobin gene shows which pattern of gene expression?

incomplete dominance

The male sex organ that secretes a fructose containing alkaline fluid to nourish male gametes and neutralize vaginal secretions

seminal vesicles

Emission of sperm and glandular secretions from male accessory glands is dependnet on:

sympathetic nervous system

The hormone that develops and maintains male secondary sexual characteristics is

testosterone

The mature male gametes are called

Sperm

What hormone causes the uterine lining to thicken so it will better be able to support a developing embryo?

(not LH)

The structure that forms the umbilical cord in the developing embryo.

allantois

Which procedure uses fetal cells sloughed off into the fluid surrounding the fetus to determine if there are genetic problems?

amniocentesis

The structure that secretes fluid that surrounds and protects the developing embryo.

amnion

The source of luteinzing hormone (LH) is the:

anterior pituitary gland

What is the name of the fluid filled space in a maturing follicle?

antrum

The collection of cells forming a fluid-filled hollow sphere that reaches the uterus

blastocyst

The collection of cells forming a fluid-filled hollow sphere that reaches the uterus.

blastocyst

Attachment of the penis to the urogenital diaphragm is due the:

bulb of the penis

Ejaculation depends on somatic reflex causing contraction of the:

bulbospongiosus muscle

What type of tissue would you expect to find lining the mucosa of the uterine tubes?

ciliated columnar epithelium

What structure secretes estrogen and progesterone after ovulation to maintain the uterine lining is case of pregnancy?

corpus lutem

An allele that masks the phenotype of other alleles for the same trait is said to be

dominant

Which structure shunts blood from the pulmonary artery to the aorta?

ductus arteriosus

Which structure shunts blood from the liver?

ductus venosus

Descent of the testes involves shortening of the

gubernaculum

An individual that has two different alleles at a locus would be considered _________ for that trait.

heterozygus

An individual that has the same alleles at a locus would be considered _________ for that trait.

homozygus

Testosterone is produced by the

interstitial cells

The contraceptive method that prevents embryo implantation is a (an)

intrauterine device

The process returning the uterus to a pre-pregnant size over time is known as

involution

The perimetrium:

is composed of an incomplete serous layer

The phase of the ovarian cycle that begins after ovulation is the

luteal phase

The duct that passes through the urogenital diaphragm is the:

membranous urethra

The name of the cell mass produced by cleavage of the zygote.

morula

Which of the following explains Kleinfelter syndrome?

nondisjunction of the sex chromosomes

The hormone which promotes the return of the uterus to the pre-pregnant size.

oxytocin

The source of the female sex hormones during the second and third trimester.

placenta

The non-viable cell with little cytoplasm resulting from oogenesis are called a (an)

polar body

In which pattern of genetic expression would the expression of a trait depend on several genes at different locations?

polygenic inheritance

The source of oxytocin.

posterior pituitary

The type of follicle that is part of the group that begins to develop with stimulation from follicle stimulating hormone (FSH) is a:

primary follicle

The oogenic cells that begin the first meotic division are called a (an)

primary oocyte

The hormone which maintains the endometrium during the secretory phase is.

progesterone

The hormone which stimulates the mammary glands to produce milk.

prolactin

The male sex organ that secretes a milky fluid containing citrate to nourish male gametes and fibinolysin to liquefy smen after ejaculation.

prostate gland

Urination may be difficult in older men due to hyperplasia of the:

prostate gland

The source of estrogen in women during the proliferative phase is the:

secondary follicle

The type of follicle that has two or more layers of follicular cells surrounding the "egg cell" is a:

secondary follicle

Spermatogenesis occurs within the

seminiferous tubules

Spermatogenic cells that result from spermiogenesis are

sperm

Undifferentiated spermatogenic cells that can undergo mitosis are called

spermatogonia

Gonadotropin releasing hormone (GnRH):

stimulates the release of follicle stimulating hormone (FSH) and luteinizing hormone (LH)

What type of tissue would you expect to find lining the mucosa of the vagina

stratified squamous

The dartos muscle and cremaster muscle are responsible for

thermoregulation of testes

Which structure brings blood to the fetus from the placenta?

umbilical vein

Which structure contains blood with the highest oxygen content?

umbilical vein

The duct that connects the epididymis to the ejaculatory duct is the:

vas deferens

The spermatic cord is formed from blood vessels, nerve fibers, and the

vas deferens

What is the name of the structure that contains glands to secrete mucus to moisten and lubricate tissues of the female reproductive tract?

vestibule

The first source of blood cells in the embryo.

yolk sac

Implantation in the uterus begins by the ________ after fertilization.

1st week

The cleavage period lasts until the end of the

1st week

The embryonic period lasts until the end of the

8th week

The main internal organs are established by the

8th week

Which of the following refers to an individual with one more or one fewer chromosomes than normal?

Aneupolidy

A quick assessment of neonate health is the:

Apgar score

Forceful expulsion of semenl fluid from the urethra is called

Ejaculation

The duct that connects the vas deferens to the urethra is the:

Ejaculatory duct

Male gametes mature and become motile within the

Epididymus

Surgical procedure often used to prevent undue tearing of the perineal region.

Episiotomy

The pituitary hormone that stimulates sustentacular cells to form ABP is

FSH (Follicle Stimulating Hormone)

The type of follicle that ruptures and releases an "egg cell" is a:

Graafian follicle

What type of hernia involves movement of a loop of the intestine into the opening between the abdominal cavity and scrotum?

Inguinal

The hormone responsible for development of testoterone secreting cells is

LH

The hormone which stimulates uterine contraction by the local release of prostaglandins.

Oxytocin

The oogenic cells that begin the first meotic division are called a (an)

Primary oocyte

The male structure that houes the testes.

Scrotum

Male secondary sexual characteristics include the following EXCEPT

narrow shoulders

An individual with Down syndrome would have three copies of which chromosome?

21

The main source of androgens in women is the:

(not anterior pituitary)