Question 1

Aging of the immune system makes older people more susceptible to cancer and infectious disease because of a decline in ________.

Accepted Answer

A)   alpha and beta globulins
B)   red blood cells and platelets
C)   complement proteins
D)   prothrombin and fibrinogen
E)   antigen-presenting cells and helper T cellsF) B) and E)
G) B) and C)

Question 2

The specific location of a gene on a chromosome is its ________.

Accepted Answer

A)   homolog
B)   genotype
C)   phenotype
D)   allele
E)   locusF) A) and B)
G) All of the above

Question 3

Onset of labor may result from

Accepted Answer

A)   increased estrogen secretion by the placenta.
B)   increased glucocorticoid secretion by the mother.
C)   increased secretion of oxytocin by the fetus.
D)   increased progesterone secretion by the placenta.
E)   decreased prostaglandins.F) B) and D)
G) B) and C) A

Question 4

Which gland originates as two evaginations from the duodenum?

Accepted Answer

A)   Anterior pituitary
B)   Posterior pituitary
C)   Thyroid gland
D)   Adrenal glands
E)   PancreasF) D) and E)
G) A) and C)

Question 5

Which germ layer is most muscle derived from?

Accepted Answer

A)   Ectoderm
B)   Mesoderm
C)   EndodermD) All of the above
E) A) and B) B

Question 6

Neonate is the term used to refer to a baby

Accepted Answer

A)   in the 24-48 hours preceding birth.
B)   in the 24-48 hours after birth.
C)   during the first month after birth.
D)   during the six months after birth.
E)   during the first year after birth.F) None of the above
G) B) and E)

Question 7

The placenta plays an important role in

Accepted Answer

A)   implantation.
B)   onset of lactation.
C)   beginning of parturition.
D)   provision of nutrients to the fetus.
E)   insulating the fetus.F) A) and E)
G) D) and E)

Question 8

Through what structure do epiblast cells migrate to form the mesoderm?

Accepted Answer

A)   Lacunae
B)   Chorionic villi
C)   Hypoblast
D)   Primitive streak
E)   BlastoceleF) A) and B)
G) B) and D)

Question 9

Placenta previa occurs when

Accepted Answer

A)   a normally placed placenta tears away from the uterine wall.
B)   the placenta is formed too early.
C)   implantation occurs close to the cervix.
D)   implantation occurs in the fundus of the uterus.E) B) and C)
F) All of the above

Question 10

Which genetic disorder is caused by having three chromosomes 21?

Accepted Answer

A)   Albinism
B)   Sickle cell disease
C)   Hemophilia
D)   Down syndrome
E)   AchondroplasiaF) A) and D)
G) B) and D)

Question 11

An infant born with a gestational age of 254 days would be considered ________.

Accepted Answer

A)   premature
B)   normal maturity
C)   postmature
D)   immature
E)   None of the choices are correct.F) A) and E)
G) D) and E)

Question 12

Which germ layer is the epidermis derived from?

Accepted Answer

A)   Ectoderm
B)   Mesoderm
C)   EndodermD) A) and C)
E) A) and B) A

Question 13

Cells of the neuroectoderm become all of the following EXCEPT the ________.

Accepted Answer

A)   brain
B)   spinal cord
C)   postganglionic autonomic neurons
D)   posterior pituitary glandE) A) and B)
F) A) and C)

Question 14

Which of the following is not a known cause of congenital anomalies?

Accepted Answer

A)   Infectious disease in the mother during pregnancy
B)   A genetic disorder
C)   Exposure to teratogens during pregnancy
D)   Smoking during lactation
E)   Smoking during pregnancyF) A) and B)
G) A) and C)

Question 15

Which term means that a person posses two different alleles at a particular locus?

Accepted Answer

A)   Homologous
B)   Diploid
C)   Homozygous
D)   Heterozygous
E)   KaryotypeF) None of the above
G) B) and E)

Question 16

Which of the following is correctly matched?

Accepted Answer

A)   First stage of labor - Fetus exits vagina
B)   Second stage of labor - ends with cervix dilation to maximum
C)   Third stage of labor - placenta expelled from uterusD) None of the above
E) B) and C)

Question 17

If a female who is a carrier for a genetic disorder has a child with a male who is also a carrier for the same disorder, the probability that their offspring will have the disorder is ________.

Accepted Answer

A)   0%
B)   25%
C)   50%
D)   100%E) B) and D)
F) All of the above

Question 18

The pleural and peritoneal cavities of the adult begin as part of the ________ cavity.

Accepted Answer

A)   cloacal
B)   somatomeric
C)   coelomic
D)   apical
E)   ventralF) B) and D)
G) C) and E)

Question 19

Which germ layer are the tonsils derived from?

Accepted Answer

A)   Ectoderm
B)   Mesoderm
C)   EndodermD) A) and B)
E) A) and C)

Question 20

Which of the following systems shows the least overall decline due to aging?

Accepted Answer

A)   Muscular system
B)   Endocrine system
C)   Integumentary system
D)   Reproductive system
E)   Urinary systemF) A) and E)
G) All of the above

Exam 29: Development, Growth, Aging, and Genetics

Aging of the immune system makes older people more susceptible to cancer and infectious disease because of a decline in ________.

Correct AnswerverifiedShow Answer

The specific location of a gene on a chromosome is its ________.

Correct AnswerverifiedShow Answer

Onset of labor may result from

Correct AnswerverifiedA

Which gland originates as two evaginations from the duodenum?

Correct AnswerverifiedShow Answer

Which germ layer is most muscle derived from?

Correct AnswerverifiedB

Neonate is the term used to refer to a baby

Correct AnswerverifiedShow Answer

The placenta plays an important role in

Correct AnswerverifiedShow Answer

Through what structure do epiblast cells migrate to form the mesoderm?

Correct AnswerverifiedShow Answer

Placenta previa occurs when

Correct AnswerverifiedShow Answer

Which genetic disorder is caused by having three chromosomes 21?

Correct AnswerverifiedShow Answer

An infant born with a gestational age of 254 days would be considered ________.

Correct AnswerverifiedShow Answer

Which germ layer is the epidermis derived from?

Correct AnswerverifiedA

Cells of the neuroectoderm become all of the following EXCEPT the ________.

Correct AnswerverifiedShow Answer

Which of the following is not a known cause of congenital anomalies?

Correct AnswerverifiedShow Answer

Which term means that a person posses two different alleles at a particular locus?

Correct AnswerverifiedShow Answer

Which of the following is correctly matched?

Correct AnswerverifiedShow Answer

If a female who is a carrier for a genetic disorder has a child with a male who is also a carrier for the same disorder, the probability that their offspring will have the disorder is ________.

Correct AnswerverifiedShow Answer

The pleural and peritoneal cavities of the adult begin as part of the ________ cavity.

Correct AnswerverifiedShow Answer

Which germ layer are the tonsils derived from?

Correct AnswerverifiedShow Answer

Which of the following systems shows the least overall decline due to aging?

Correct AnswerverifiedShow Answer

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