Physiology Exam 6

05/05/2016

How is polyspermy prevented?

	capacitation
	cortical reaction
	sperm migration
	acrosomal reaction

During the luteal phase of the uterine (menstrual) cycle, the corpus luteum secretes progesterone and some estrogen.

	True
	False

[AdsenseImage]

Where does fertilization usually occur?

	uterus
	infundibulum of the uterine tube
	isthmus of the uterine tube
	ampulla of the uterine tube

A parent cell has 28 chromosomes and completes meiosis. How many chromosomes result in each cell produced?

	28 chromosomes
	56 chromosomes
	14 chromosomes
	46 chromosomes

Which portion of the uterus is shed during menstruation?

	perimetrium
	stratum functionalis of the endometrium
	stratum basalis of the endometrium
	myometrium

[AdsenseImage]

During which month of prenatal development will the fetus begin to develop reflexes?

	month 6
	month 8
	month 2
	month 4

Which of the following accompanies puberty?

	menarche
	female climacteric, or menopause
	atresia
	male climacteric, or andropause

Labor progresses through the following three stages:

	dilation, effacing, and placental stages.
	dilation, expulsion, and placental stages.
	duration, expansion, and placental stages.
	dilation, expansion, and pushing stages.

Which hormone suppresses uterine contractions until birth?

	human chorionic gonadotropin (hCG)
	human placental lactogen (hPL)
	relaxin
	melanocyte-stimulating hormone (MSH)

[AdsenseImage]

The process of male gamete, or sperm cell, development is known as:

	mitosis.
	fertilization.
	oogenesis.
	spermatogenesis.

What is the action of luteinizing hormone (LH)?

	LH stimulates the secretion of interstitial-cell stimulating hormone (ICSH).
	LH stimulates the sustentacular cells of the testes to secrete androgen-binding protein (ABP).
	LH stimulates the secretion of inhibin.
	LH stimulates interstitial cells of the testes to produce testosterone.

Damage to the sustentacular cells of the testes could impair:

	production of estrogens.
	oogenesis.
	FSH and LH production.
	spermatogenesis.

Inherited traits controlled by two or more genes are called:

	incomplete dominance.
	polygenic inheritance.
	multiple alleles.
	codominance.

[AdsenseImage]

Which hormone makes the medullary respiratory center more sensitive to carbon dioxide levels during pregnancy?

	human chorionic gonadotropin (hCG)
	progesterone
	relaxin
	estrogen

Which of the following may be prevented with a vaccine?

	syphylis
	human papillomavirus (HPV)
	genital herpes
	trichomoniasis

How many tetrads form during synapsis of meiosis for humans?

	46
	23
	98
	4

[AdsenseImage]

A cell with 12 pairs of homologous chromosomes is said to be diploid, 2n.

	True
	False

After birth, the mother may lose excess fluids from the uterus as:

	lactation.
	meconium.
	colostrum.
	lochia.

Which of the following steps must occur first during the embryonic period?

	formation of the primitive streak
	embryonic folding
	organogenesis
	gastrulation

If a couple want to have sexual intercourse, and they do not wish to use a behavior method as a form of birth control since they know it comes with high risk. What could be an alternative method?

	withdrawal
	abstinence
	rhythm method
	condoms

Which of the following releases human chorionic gonadotropin (hCG)?

	blastocyst
	cytotrophoblast
	inner cell mass
	syncytiotrophoblast

[AdsenseImage]

In a female, follicle-stimulating hormone (FSH) and luteinizing hormone (LH) target the:

	hypothalamus.
	uterus.
	ovaries.
	anterior pituitary gland.

After fertilization, a zygote rapidly divides to produce small, genetically identical cells known as:

	trophoblasts.
	pronuclei.
	blastomeres.
	centromeres.

Approximately how many days after fertilization is a fetus considered full-term and ready to be born?

	185 days
	324 days
	238 days
	266 days

Which of the following is the main hormone that regulates spermatogenesis?

	testosterone
	inhibin
	estrogen
	growth hormone

What does gastrulation accomplish?

	differentiation of germ layers into organs and organ system
	formation of the primitive streak
	formation of the three germ layers
	implantation of the blastocyst into the endometrium

Failure of the allantois to fully develop will impact the formation of the:

	digestive tract.
	urinary bladder.
	kidneys.
	skeletal muscles.

The movement of sperm, testicular fluids, and secretions from the prostate gland and seminal vesicle into the urethra is known as:

	ejaculation.
	expulsion.
	emission.
	erection.

What follows immediately after fertilization occurs?

	capacitation
	acrosomal reaction
	cleavage
	sperm migration

What type of birth control may prevent pregnancy by manipulating the hormones and interfering with ovulation?

	behavior method
	hormonal method
	intrauterine device (IUD)
	barrier method

An elderly man, Mr. Gee, is unable to maintain an erection. Classify his condition.

	refractory period
	resolution
	flaccid
	impotence

[wpp range=”daily” order_by=”views” thumbnail_width=125 thumbnail_height=125 stats_views=0]

A birth defect known as spina bifida results from the incomplete closure of the embryonic neural tube. Which germ layer is affected?

	ectoderm
	mesoderm
	myotome
	endoderm

The reduction in the number of chromosomes to half the normal count occurs during:

	fertilization.
	crossing over.
	meiosis.
	mitosis.

[AdsenseImage]

Which of the following is the inner germ layer?

	ectoderm
	mesoderm
	epiblast
	endoderm

Which of the following vascular shunts connects the fetal left and right atria?

	foramen ovale
	ductus arteriosus
	ductus venosus
	fossa ovalis

What makes estrogen and progesterone after the fourth month of pregnancy to maintain the uterine lining?

	placenta
	corpus luteum
	ovaries
	anterior pituitary

Ovulation is triggered by a surge in:

	testosterone.
	inhibin.
	luteinizing hormone (LH).
	progesterone.

Which of the following is the first phase of the ovarian cycle?

	ovarian phase
	luteal phase
	menstrual phase
	follicular phase

The fusion of a sperm cell and secondary oocyte is known as:

	fertilization.
	meiosis.
	capacitation.
	ovulation.

Which hormones stimulate the growth of alveoli in the mother’s mammary gland?

	estrogen and prolactin
	estrogen and progesterone
	prolactin and cortisol
	oxytocin and progesterone

[AdsenseImage]

The organ systems rudimentarily form during the:

	pre-embryonic period.
	fetal period.
	embryonic period.
	neo-natal period.

The initial stimulus for labor comes from the:

	fetus.
	maternal hypothalamus.
	maternal uterus.
	maternal ovaries.

What does the ectoderm form?

	internal epithelial layer of the digestive system
	neural plate and neural tube
	gonads and kidneys
	internal epithelial layer of the urinary system

By what week of prenatal development will organogenesis be complete?

	week 8
	week 12
	week 4
	week 16

Which of the following is NOT a bacterial sexually transmitted infection (STI)?

	gonorrhea
	syphylis
	chlamydia
	genital herpes

Which extraembryonic membrane forms the embryonic part of the placenta?

	yolk sac
	allantois
	chorion
	amnion

In the case of blood types, both alleles A and B may be expressed as the phenotype. This exemplifies:

	sex-linked inheritance.
	incomplete dominance.
	polygenic inheritance.
	codominance.

[AdsenseImage]

During which process is exposure to teratogens most devastating for the development of the embryo’s organs?

	cleavage
	formation of the blastula
	organogenesis
	gastrulation

By which period of prenatal development will the placenta be fully formed?

	fetal period
	pre-embryonic period
	infancy
	embryonic period

When does the prenatal period begin?

	gestation
	infancy
	birth
	conception

[AdsenseImage]

Knights Inn and Suites Branson

Nutrition, enteral feedings, NG tubes: Terminology

As an Amazon Associate we earn from qualifying purchases through some links in our articles.

[wpp range=”daily” order_by=”views” thumbnail_width=125 thumbnail_height=125 stats_views=0]

Related Posts