Unit 7 Reproductive System Lecture Test

A mature follicle releases an ovum in response to

a surge in luteinizing hormone

Spermatozoa functionally mature within the

epididymis

The proper arrangement of the four structures into the order in which sperm pass from the testis to the urethral meatus

epididymis --> ductus deferens --> ejaculatory duct --> urethra

______________ is the cause of most puberty-related changes in a female

estrogen

The uterine phase that develops because of a fall in progesterone levels is the

menses

The surge in luteinizing hormone that occurs during the middle of the ovarian cycle triggers

ovulation

Stretching of the cervix causes an increase in the blood levels of

oxytocin

The traits of an individual controlled by his or her genotype are his or her

phenotype

The function of gonads

produce gametes and produce hormones

During gestation, contraction of the myometrium is inhibited by ________, produced by the placenta.

progesterone

The organ that surrounds the urethra and secretes an antibiotic protein is the

prostate gland

Sperm production occurs in the

seminiferous tubules

The prostaglandins produced in the endometrium stimulate

smooth muscle contractions

When spermatogonia divide, the two daughter cells produced are a spermatogonium and a

spermatocyte

The process of spermiogenesis produces

spermatozoa

In a mature human spermatozoan,

the acrosome is next to the nucleus, and the head contains 23 chromosomes

The embryonic heart starts beating as blood begins to flow through chorionic vessels at approximately

week 3 of development

The extra-embryonic membrane that forms blood cells is the

yolk sac

The pituitary hormone that stimulates the interstitial cells to secrete testosterone is

LH

The various forms of any one gene are called

alleles

A space opens within the inner cell mass that will form the

amniotic cavity

Interstitial cells produce

androgens

The individual cells produced by cleavage are called

blastomeres

Contractions of the bulbospongiosus muscles result in

ejaculation

Contraction of the dartos muscle

elevates the scrotal sac

The fimbriae are

fingerlike projections that capture the freshly ovulated ovum

A person's original chromosomes and their component genes constitute that person's

genotype

The _______ is the part of the sperm that contains the DNA

head

Attachment to and penetration of the endometrium by the blastocyst is referred to as

implantation

The ____________ is an opening through which the spermatic cord passes

inguinal canal

The endometrium is the

inner lining of the uterus

After 3 days, a pre-embryo becomes a solid ball of cells known as a

morula

The mesoderm forms

muscle

The ectoderm forms

neural tissues

Ductus deferens is the

organ that carries sperm from the epididymis to the urethra

Order sperm produced in the seminiferous tubules pass through the following structures before being stored in the epididymis

straight ductules --> rete testis --> efferent ductules

The clitoris contains erectile tissue comparable to

the corpora cavernosa of the penis

During the proliferative phase of the uterine cycle,

the functional zone of the endometrium is restored

If an individual carries a pair of alleles that are the same,

the individual is homozygous for the trait

Fertilization of an ovum usually takes place in

the uterine tube

The structure that transports the ovum to the uterus is

the uterine tube

During gastrulation,

three germ layers are formed