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Multiple Choice Quiz 1
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1
Which of the following is used to describe the timing of developmental events by embryologists?
A)clinical age
B)postovulatory age
C)embryonic age
D)none of the above
2
Which of the following events describes the initial depolarization of the plasma membrane of the oocyte by the penetration of the first sperm cell?
A)slow block to polyspermy
B)fast block to polyspermy
C)perivertelline space
D)gemination
3
Which of the following is a general term to describe cells that are derived from the neural crest or the mesoderm of the embryo?
A)mesenchyme
B)neural crest cells
C)somitomeres
D)primitive streak
4
Which of the following represents a failure of the fusion of the secondary palate?
A)cleft palate
B)tertiary palate
C)cleft lip
D)primary palate
5
Which of the following would cause heart murmurs in a newborn?
A)ventricular septal defect
B)mesonephros
C)atrial septal defect
D)both A and C
6
Which of the following describes a waxy coat of sloughed epithelial cells that protect the fetus from toxins in the amniotic fluid?
A)vernix caseosa
B)subcutaneous fat
C)granulosal cells
D)amniotic cells
7
Primordial germ cells arise from the
A)mesonephric ducts.
B)yolk sac endoderm.
C)genital tubercle.
D)urethral folds.
8
Which of the following procedures might be performed to aid a mother in the delivery of a large baby?
A)prolapse
B)episiotomy
C)breach
D)none of the above
9
Which of the following would describe the levels of estrogen and progesterone after parturition?
A)Estrogen is high, progesterone is low.
B)Both estrogen and progesterone are high.
C)Estrogen is low but progesterone is high.
D)Both progesterone and estrogen are low.
10
The time period between maximum cervical dilation until the baby exits the vagina is the ____ stage of labor.
A)first
B)second
C)third
D)fourth
11
The ____ stage of labor involves the expulsion of the placenta from the uterus.
A)first
B)second
C)third
D)fourth
12
Which of the following structures in the fetus becomes the ligamentum venosum in the newborn?
A)ductus venosus
B)ductus arteriosus
C)foramen ovale
D)fossa ovalis
13
Which of the following Apgar scores would represent a newborn with reduced (though not seriously impaired) function?
A)2
B)0
C)1
D)4
14
A newborn may lose _____ of its body weight during the first days of life.
A)1-3%
B)5-10%
C)10-15%
D)15-20%
15
The pH of the stomach in the hours after birth
A)increases.
B)decreases.
C)remains nearly neutral.
D)remains highly acidic.
16
Which of the following hormones is responsible for growth of breast alveolar glands during pregnancy?
A)estrogen
B)progesterone
C)prolactin
D)colostrum
17
Which of the following structures releases prolactin?
A)hypothalamus
B)anterior pituitary
C)posterior pituitary
D)adrenal glands
18
For the first few days after birth, the mammary glands secrete
A)prolactin.
B)progesterone.
C)milk.
D)colostrum.
19
To stimulate milk production, prolactin levels
A)increase temporarily.
B)decrease.
C)do not change.
D)increase permanently.
20
When does the infant usually have the ability to hold up its head when placed in a prone position?
A)1 month
B)6 weeks
C)6 months
D)12 months
21
When should the infant normally be able to pull itself up and start walking?
A)6 months
B)12 months
C)2 years
D)18 months
22
Normally, an infant can raise up on its arms at
A)1 month
B)6 weeks
C)4 months
D)6 months
23
Which of the following represents the period of time between 56 days after fertilization and birth?
A)embryo
B)blastocyst
C)fetus
D)zygote
24
During which period of life do most of the individual's emotional behavioral patterns develop?
A)fetal
B)infancy
C)adolescence
D)childhood
25
In females, puberty typically occurs at what age?
A)8-9 years old
B)9-10 years old
C)11-13 years old
D)14-15 years old
26
In males, puberty typically occurs at what age?
A)9-10 years old
B)11-12 years old
C)12-14 years old
D)14-15 years old
27
Which of the following Vitamins are useful in fighting free radical cellular damage in aging?
A)vitamin B
B)vitamin D
C)vitamin A
D)A and C.
28
Which of the following changes does NOT occur with aging?
A)increase in ATP production
B)cytological damage from toxins and radiation.
C)decreased vision.
D)loss of elasticity in the skin.
29
Which types of cells are replaced continually throughout life?
A)liver
B)skin
C)Both A and B.
D)None of the above.
30
Deposit and hardening of material in arteries is called
A)atherosclerosis
B)mutations
C)embolus
D)None of the above.
31
Which of the following is FALSE about death?
A)It is usually attributed to old age.
B)It is attributed to heart, lung, or kidney failure.
C)It is attributed to cancer.
D)None of the above.
32
Which of the following describes the display of chromosomes in somatic cells?
A)genotype
B)phenotype
C)gamete
D)karyotype
33
Which of the following describes genes that have alleles that are slightly different?
A)dominance chart
B)punnet Square
C)apgar Score
D)none of the above
34
Which of the following would help determine the probability of genetic traits?
A)dominance chart
B)punnet Square
C)apgar Score
D)none of the above
35
Which of the following is true concerning congenital disorders?
A)15% are caused by genetic defects.
B)70% are of unknown cause.
C)15% are caused by environmental changes.
D)All of the above.
36
type of trait that is always expressed
A)heterozygous
B)recessive
C)dominant
D)sex-linked
37
trait that is only found on an X chromosome
A)hemophilia A
B)tallness
C)eye color
D)None of the above.
38
genes associated with cancer
A)tetrads
B)mutagens
C)codominant genes
D)oncogenes





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