Central Piedmont A&P. Unit Test 4

Question 1

Central Piedmont A&P. Unit Test 4. What major event occurs during the first stage of labor?

• The fetal head crowns.
• The placenta is delivered.
• The newborn is delivered.
• The cervix thins and dilates.

Question 2

In order for a male to inherit a sex-linked (X-linked) disorder, he must receive the allele from:

• his father only.
• both his mother and father.
• either his mother or father.
• his mother only.

Question 3

If pregnancy occurs, what structure will continue to produce progesterone for approximately 3 months?

• corpus luteum
• ovaries
• anterior pituitary
• placenta

Question 4

Which hormone is primarily responsible for the “milk let-down” reflex?

• prolactin
• oxytocin
• estrogen
• progesterone

Question 5

The process by which the blastocyst attaches to the uterine wall is called:

• fertilization
• implantation
• gastrulation
• cleavage

Question 6

Which of the following is the correct order of the stages of prenatal development?

• embryonic, fetal, pre-embryonic
• pre-embryonic, embryonic, fetal
• fetal, embryonic, pre-embryonic
• pre-embryonic, fetal, embryonic

Question 7

Which hormone is detected by a pregnancy test?

• estrogen
• progesterone
• human chorionic gonadotropin (hCG)
• luteinizing hormone (LH)

Question 8

What is the primary function of the amniotic fluid?

• to provide nutrition to the fetus
• to protect and cushion the fetus
• to carry waste away from the fetus
• to facilitate gas exchange

Question 9

How many chromosomes are in a human gamete?

• 46
• 23
• 22
• 44

Question 10

The stage of labor that involves the delivery of the infant is the:

• first stage
• second stage
• third stage
• fourth stage

Question 11

Which of the following is a function of the placenta?

• production of red blood cells for the fetus
• exchange of nutrients and waste between mother and fetus
• protection against all viruses and drugs
• mixing of maternal and fetal blood Central Piedmont A&P. Unit Test 4.

Question 12

The outer layer of the blastocyst that will help form the placenta is the:

• inner cell mass
• trophoblast
• blastocoele
• zona pellucida

Question 13

Which germ layer gives rise to the nervous system and the epidermis?

• ectoderm
• mesoderm
• endoderm
• trophoblast

Question 14

Which germ layer gives rise to the muscle and skeletal systems?

• ectoderm
• mesoderm
• endoderm
• hypoblast

Question 15

The clinical term for the period of time from conception to birth is:

• gestation
• parturition
• fertilization
• senescence

Question 16

What structure carries oxygenated blood from the placenta to the fetal heart?

• umbilical artery
• umbilical vein
• ductus arteriosus
• foramen ovale

Question 17

The physical expression of a person’s genetic makeup is called the:

• genotype
• phenotype
• allele
• chromosome

Question 18

Which of the following describes a person with two different alleles for a trait?

• homozygous
• heterozygous
• haploid
• recessive

Question 19

The process of cell division that results in gametes is:

• mitosis
• meiosis
• binary fission
• cytokinesis

Question 20

Where does fertilization typically occur?

• ovary
• uterine (fallopian) tube
• uterus
• vagina

Question 21

The solid ball of cells that forms about 3 days after fertilization is the:

• zygote
• morula
• blastocyst
• gastrula

Question 22

Which male hormone stimulates the development of male secondary sex characteristics? Central Piedmont A&P. Unit Test 4.

• FSH
• LH
• testosterone
• inhibin

Question 23

The lining of the uterus that is shed during menstruation is the:

• myometrium
• perimetrium
• endometrium
• epimetrium

Question 24

Which hormone triggers ovulation?

• FSH
• LH
• estrogen
• progesterone

Question 25

Parathyroid hormone (PTH) is released in response to:

• decreasing calcium ion concentration of the blood
• increasing calcium ion concentration of the blood
• decreasing sodium ion concentration of the blood
• increasing sodium ion concentration of the blood

Question 25

Parathyroid hormone (PTH) is released in response to:

• decreasing calcium ion concentration of the blood
• increasing calcium ion concentration of the blood
• decreasing sodium ion concentration of the blood
• increasing sodium ion concentration of the blood

Question 26

Where does sperm production occur?

• seminiferous tubules
• prostate gland
• epididymis
• vas deferens

Question 27

Which of the following is TRUE about the effect of hypertonic fluids on a cell?

• Hypertonic fluids cause water to move into the cell and the cell swells.
• Hypertonic fluids cause water to move out of the cytosol and the cell shrinks.
• Hypertonic fluids cause water to move into the cell and the cell stays the same size.
• Hypertonic fluids have no effect on the movement of water.

Question 28

Which of the following are NOT found in the glomerular filtrate?

• glucose
• blood cells
• urea
• water

Question 29

Which hormone is responsible for water reabsorption in the kidneys?

• aldosterone
• antidiuretic hormone (ADH)
• atrial natriuretic peptide (ANP)
• parathyroid hormone (PTH)

Question 30

The fusion of a sperm and an egg cell is called:

• ovulation.
• fertilization.
• implantation.
• gastrulation.

Question 31

If an individual has two identical alleles for a particular gene, they are said to be:

• heterozygous.
• homozygous.
• dominant.
• recessive.

Question 32

What is the function of the umbilical arteries?

• to carry oxygenated blood to the fetus
• to carry deoxygenated blood to the placenta
• deoxygenated blood away from the fetal heart
• oxygenated blood away from the fetal heart

Question 33

From which follicle will a secondary oocyte be released through ovulation?

• secondary follicle
• primary follicle
• primordial follicle
• vesicular (tertiary) follicle

Question 34

In humans, from which extraembryonic membrane will the first blood cells arise? Central Piedmont A&P. Unit Test 4.

• allantois
• chorion
• amnion
• yolk sac

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Question 35

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

• corpus luteum
• ovaries
• anterior pituitary
• placenta

Question 36

How is polyspermy prevented?

• sperm migration
• cortical reaction
• capacitation
• acrosomal reaction

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Question 37

How many spermatids result from one spermatogonium?

• 4
• 2
• 16
• 8

Question 38

Hyperventilation is the compensation for an acid-base imbalance known as:

• metabolic acidosis.
• respiratory alkalosis.
• respiratory acidosis.
• metabolic alkalosis.

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Question 39

Which of the following dissociates into ions when placed in water?

• electrolyte
• starch
• glucose
• nonelectrolyte

Question 40

Select the blood pH that represents acidosis.

• 7.37
• 7.42
• 7.58
• 7.24

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Question 41

What is the main female gonad?

• cervix. Central Piedmont A&P. Unit Test 4.
• vagina
• uterus
• ovary

Question 42

When fewer hydrogen ions are secreted into the filtrate, how is blood pH affected?

• Blood pH increases.
• Blood pH decreases.
• Blood pH is not affected by hydrogen ions.
• Blood pH alternately increases and decreases.

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Question 44

What does the ectoderm form?

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

Question 45

Predict the possible blood types, or phenotypes, of offspring in which the father has blood type O and the mother has blood type AB.

• The possible blood types of the offspring are phenotypes A, B, AB, or O.
• The possible blood types of the offspring are phenotypes AB or O only.
• The possible blood types of the offspring are phenotypes A or O only.
• The possible blood types of the offspring are phenotypes A or B only.

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Question 46

What best describes hydrostatic pressure?

• Hydrostatic pressure is created by the number of solute particles present in solution.
• Hydrostatic pressure is the force that proteins exert in solution.
• Hydrostatic pressure is the force that fluids exert against the capillary wall.
• Hydrostatic pressure is created by the number of proteins present in solution.

Question 47

The Apgar score is assigned for several criteria measured at birth. What is NOT measured?

• respiratory level
• defecation
• grimace
• muscle activity

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Question 48

Complete the equation: CO2​+H2​O↔H2​CO3​↔?​+H+

• H2​PO4−​
• HPO4−​
• OH−
• HCO3−​

Question 49

Which of the following is the phase of the ovarian cycle during which a primary follicle matures into a secondary follicle?

• luteal phase
• ovarian phase
• follicular phase
• menstrual phase

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Question 50

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

• ductus venosus
• ductus arteriosus
• fossa ovalis
• foramen ovale