Question 1

Which of the following organ systems is derived from all three germ layers?

Accepted Answer

A)   Nervous
B)   Cardiovascular
C)   Endocrine
D)   Integumentary
E)   SkeletalF) All of the above
G) C) and D)

Question 2

Arm and legs buds appear at about 28 days from

Accepted Answer

A)   the coelom.
B)   apical ectodermal ridges.
C)   somitomeres.
D)   neural crest cells.E) B) and C)
F) None of the above

Question 3

A non-albino female who is a carrier for the albino allele (Aa) , mates with an albino (aa)  male. What is the probability that their child will be albino?

Accepted Answer

A)   0%
B)   25%
C)   50%
D)   75%
E)   100%F) B) and E)
G) A) and E)

Question 4

A neonate who has a blue tint to her skin, has a pulse of less than 100 bpm, and has an irregular rate of breathing could score an APGAR score of 8.

Accepted Answer

A) True 
 B)False

Question 5

Which gland is derived from both neural crest cells and mesoderm?

Accepted Answer

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

Question 6

The single layer of cells that surrounds the blastocele is the ________.

Accepted Answer

A)   morula
B)   gastrula
C)   blastocyst
D)   trophoblast
E)   inner cell massF) A) and D)
G) A) and C)

Question 7

Which of the following is derived from ectoderm?

Accepted Answer

A)   Lens of the eye
B)   Thymus gland
C)   Tonsils
D)   Urinary bladder
E)   Dermis of skinF) A) and D)
G) A) and E)

Question 8

Down Syndrome is an example of an aneuploidy called ________.

Accepted Answer

A)   monosomy 21
B)   trisomy 21
C)   monosomy 23
D)   trisomy 17
E)   disomy 21F) D) and E)
G) B) and E)

Question 9

As parturition nears, the levels of progesterone ________ and the levels of estrogen ________.

Accepted Answer

A)   decrease; increase
B)   increase; decrease
C)   decrease; decrease
D)   increase; increaseE) B) and D)
F) C) and D)

Question 10

A patent ductus arteriosus means that the ________ did not close.

Accepted Answer

A)   intraatrial septum
B)   intraventricular septum
C)   connection between the pulmonary trunk and the aorta
D)   connection between the inferior vena cava and the abdominal aorta
E)   umbilical arteries and veinsF) A) and D)
G) C) and D)

Question 11

Which of the following fetal shunts bypasses the fetal lungs?

Accepted Answer

A)   Ductus arteriosus
B)   Ductus venosus
C)   Umbilical arteries
D)   Umbilical vein
E)   Ductus byosusF) B) and C)
G) A) and B)

Question 12

Fusion of the male and female pronuclei

Accepted Answer

A)   results in an oocyte forming.
B)   restores the diploid number of chromosomes.
C)   occurs before ovulation.
D)   results in a haploid cell forming.
E)   results in a total of 23 chromosomes.F) All of the above
G) B) and D)

Question 13

Many gerontologists refer to walking as one of the most important anti-aging activities to prolong life. This is because a daily 30-minute walk

Accepted Answer

A)   increases blood pressure.
B)   improves circulation.
C)   promotes anaerobic metabolism.
D)   increases urine output.
E)   increases peripheral resistance.F) C) and D)
G) All of the above

Question 14

Which of the following is derived from endoderm?

Accepted Answer

A)   Brain
B)   Muscle
C)   Epidermis of the skin
D)   Mucosa of the digestive tract
E)   Cardiovascular systemF) A) and D)
G) D) and E)

Question 15

Which of the following events near the end of pregnancy might indicate parturition is near?

Accepted Answer

A)   The cervix gradually constricts.
B)   The uterus begins regular contractions.
C)   The amniotic sac becomes edematous.
D)   The fetal heart rate increases to greater than 160 beats per minute.
E)   The cervix shrinks.F) None of the above
G) C) and D)

Question 16

Which of the following is NOT a possible route for neural crest cells?

Accepted Answer

A)   Melanocytes
B)   Autonomic ganglion neurons
C)   Adrenal cortex
D)   Sensory ganglia
E)   Enteric nervous system neuronsF) B) and E)
G) A) and D)

Question 17

When stretch receptors in the cervix are stimulated by the continually increasing pressure of the fetus, afferent neurons send impulses to the maternal hypothalamus resulting in

Accepted Answer

A)   increased estrogen production.
B)   increased oxytocin production.
C)   increased fetal CRH production.
D)   increased growth in the size of the placenta.
E)   decreased oxytocin production.F) A) and D)
G) B) and D)

Question 18

An embryonic cell that has the potential to develop into a wide range of tissues is called a/an ________ cell.

Accepted Answer

A)   differentiated
B)   multipotent
C)   pluripotent
D)   omnipotent
E)   totipotentF) A) and B)
G) A) and C)

Question 19

A female that is a carrier for X-linked color-blindness has a daughter with a male that is colorblind. What is the probability that the daughter is colorblind?

Accepted Answer

A)   100%
B)   50%
C)   25%
D)   0%E) A) and C)
F) A) and D)

Question 20

Failure of the neural tube to close in the region of the head results in ________.

Accepted Answer

A)   anencephaly
B)   ventricular enlargement
C)   cleft palate
D)   soft spots on the skull
E)   hydrocephalyF) C) and D)
G) D) and E)

Exam 29: Development, Growth, Aging, and Genetics

A non-albino female who is a carrier for the albino allele (Aa) , mates with an albino (aa) male. What is the probability that their child will be albino?

Correct AnswerverifiedShow Answer

A female that is a carrier for X-linked color-blindness has a daughter with a male that is colorblind. What is the probability that the daughter is colorblind?

Correct AnswerverifiedShow Answer

Fusion of the male and female pronuclei

Correct AnswerverifiedShow Answer

Which of the following is NOT a possible route for neural crest cells?

Correct AnswerverifiedShow Answer

Which of the following is derived from ectoderm?

Correct AnswerverifiedShow Answer

Which of the following is derived from endoderm?

Correct AnswerverifiedShow Answer

An embryonic cell that has the potential to develop into a wide range of tissues is called a/an ________ cell.

Correct AnswerverifiedShow Answer

When stretch receptors in the cervix are stimulated by the continually increasing pressure of the fetus, afferent neurons send impulses to the maternal hypothalamus resulting in

Correct AnswerverifiedShow Answer

Many gerontologists refer to walking as one of the most important anti-aging activities to prolong life. This is because a daily 30-minute walk

Correct AnswerverifiedShow Answer

Which gland is derived from both neural crest cells and mesoderm?

Correct AnswerverifiedShow Answer

Which of the following events near the end of pregnancy might indicate parturition is near?

Correct AnswerverifiedShow Answer

A patent ductus arteriosus means that the ________ did not close.

Correct AnswerverifiedShow Answer

Which of the following fetal shunts bypasses the fetal lungs?

Correct AnswerverifiedShow Answer

Which of the following organ systems is derived from all three germ layers?

Correct AnswerverifiedShow Answer

Failure of the neural tube to close in the region of the head results in ________.

Correct AnswerverifiedShow Answer

Arm and legs buds appear at about 28 days from

Correct AnswerverifiedShow Answer

A neonate who has a blue tint to her skin, has a pulse of less than 100 bpm, and has an irregular rate of breathing could score an APGAR score of 8.

Correct AnswerverifiedShow Answer

Down Syndrome is an example of an aneuploidy called ________.

Correct AnswerverifiedShow Answer

As parturition nears, the levels of progesterone ________ and the levels of estrogen ________.

Correct AnswerverifiedShow Answer

The single layer of cells that surrounds the blastocele is the ________.

Correct AnswerverifiedShow Answer

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As parturition nears, the levels of progesterone and the levels of estrogen .

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