Question 1

Which structure(s)  form(s)  the roof of the mouth?

Accepted Answer

A)   Mesonephros
B)   Mandibular processes
C)   Neural tube
D)   Secondary palate
E)   SomitesF) A) and B)
G) C) and D)

Question 2

Type AB of the ABO blood group is an example of ________.

Accepted Answer

A)   complete dominance
B)   codominance
C)   incomplete dominance
D)   recessiveness
E)   polymorphismF) B) and E)
G) B) and C)

Question 3

In some neonates, the foramen ovale does not close to form the fossa ovalis. This would be called a/an ________.

Accepted Answer

A)   mutation
B)   congenital disorder
C)   teratogen
D)   genetic anomalyE) B) and C)
F) B) and D)

Question 4

The placenta and membranes surrounding the embryo develop from the ________.

Accepted Answer

A)   morula
B)   blastocyst
C)   trophoblast
D)   inner cell mass
E)   blastoceleF) B) and E)
G) C) and D)

Question 5

The embryonic heart

Accepted Answer

A)   develops from two endothelial tubes that fuse together.
B)   consists of four chambers.
C)   has two atria but only one ventricle.
D)   doesn't beat until just prior to birth.
E)   has no passages connecting right side to left side.F) A) and B)
G) A) and C)

Question 6

The allantois enlarges to form the ________.

Accepted Answer

A)   kidney
B)   gonads
C)   ureter
D)   urinary bladder
E)   urethraF) None of the above
G) A) and B)

Question 7

If the zygote splits into two separate cells, ________.

Accepted Answer

A)   identical twins result
B)   fraternal twins result
C)   dizygotic twinning occurs
D)   both cells die
E)   paternal twins resultF) A) and B)
G) A) and C)

Question 8

Developmental events are calculated from

Accepted Answer

A)   ovulation.
B)   conception.
C)   the last menstrual period.
D)   fourteen days after the last menstrual period.
E)   fourteen days before the last menstrual period.F) B) and E)
G) A) and E)

Question 9

Which of the following statements concerning musculoskeletal system development is true?

Accepted Answer

A)   Skeletal muscles develop from crest cells.
B)   Myoblasts produce somites.
C)   The vertebral column develops from somite-derived mesoderm.
D)   Enlargement of muscles after birth is due to an increase in the number of muscle fibers.
E)   Ossification ends before birth.F) C) and E)
G) A) and B)

Question 10

Which of the following statements concerning the embryonic cardiovascular system is true?

Accepted Answer

A)   The heart develops from four endothelial tubes.
B)   Blood vessels form from blood islands.
C)   An opening in the interatrial septum is called the sinus venosus.
D)   The bulbus cordis becomes the sinoatrial node (the adult pacemaker) .
E)   There is an opening in the interventricular septum.F) A) and C)
G) A) and B)

Question 11

Sally was a nice pink color when she was born. Her heart rate was high and her breathing was steady. However, she did not respond to plantar stimulation, though she did have some muscle movement. Her APGAR score would be ________.

Accepted Answer

A)   7
B)   6
C)   5
D)   4E) A) and D)
F) A) and B)

Question 12

An embryonic cell that contains the potential to give rise to any tissue type is called a/an ________ cell.

Accepted Answer

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

Question 13

Alcohol ingestion by a pregnant woman can cause birth defects in her baby; in this respect, alcohol is a/an ________.

Accepted Answer

A)   carcinogen
B)   mutagen
C)   teratogen
D)   oncogene
E)   haptogenF) C) and D)
G) A) and E)

Question 14

Premature aging is called ________.

Accepted Answer

A)   progeria
B)   lactation
C)   parturition
D)   Alzheimer disease
E)   dementiaF) A) and D)
G) C) and E)

Question 15

Older people may require lower drug doses than younger people because ________.

Accepted Answer

A)   their organs are more sensitive to drugs
B)   they have lower rates of renal clearance
C)   they do not absorb as much drug from the small intestine
D)   there is less tissue mass to treat
E)   a lifetime of mutations results in unpredictable drug reactionsF) C) and D)
G) A) and C)

Question 16

The onset of puberty is signaled by

Accepted Answer

A)   a growth spurt.
B)   emotional upheaval.
C)   attainment of full adult stature.
D)   the ability to obtain a drivers license.
E)   a halt to growth.F) All of the above
G) A) and C)

Question 17

Which germ layer is the thymus derived from?

Accepted Answer

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

Question 18

A patient's karyotype indicates a chromosome number of 45. This result is best explained by

Accepted Answer

A)   nondisjunction in either the sperm cell or oocyte.
B)   nondisjunction in both the sperm cell and oocyte.
C)   fertilization of a single oocyte by two sperm cells.
D)   a point mutation that caused one or more chromosomes to fuse.E) All of the above
F) B) and C)

Question 19

The opening that connects the right and left atria in the fetal heart is the ________.

Accepted Answer

A)   interatrial septum
B)   septum primum
C)   septum secundum
D)   foramen ovale
E)   foramen rotundumF) C) and D)
G) A) and D)

Question 20

Which of the following sequences is correct?

Accepted Answer

A)   Mesonephros, pronephros, metanephros
B)   Metanephros, pronephros, mesonephros
C)   Pronephros, mesonephros, metanephros
D)   Pronephros, metanephros, mesonephros
E)   Mesonephros, metanephros, pronephrosF) C) and E)
G) C) and D)

Exam 29: Development, Growth, Aging, and Genetics

A patient's karyotype indicates a chromosome number of 45. This result is best explained by

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If the zygote splits into two separate cells, ________.

Correct AnswerverifiedShow Answer

Which structure(s) form(s) the roof of the mouth?

Correct AnswerverifiedShow Answer

The opening that connects the right and left atria in the fetal heart is the ________.

Correct AnswerverifiedShow Answer

Alcohol ingestion by a pregnant woman can cause birth defects in her baby; in this respect, alcohol is a/an ________.

Correct AnswerverifiedShow Answer

An embryonic cell that contains the potential to give rise to any tissue type is called a/an ________ cell.

Correct AnswerverifiedShow Answer

The embryonic heart

Correct AnswerverifiedShow Answer

Sally was a nice pink color when she was born. Her heart rate was high and her breathing was steady. However, she did not respond to plantar stimulation, though she did have some muscle movement. Her APGAR score would be ________.

Correct AnswerverifiedShow Answer

The placenta and membranes surrounding the embryo develop from the ________.

Correct AnswerverifiedShow Answer

Developmental events are calculated from

Correct AnswerverifiedShow Answer

Which germ layer is the thymus derived from?

Correct AnswerverifiedShow Answer

Older people may require lower drug doses than younger people because ________.

Correct AnswerverifiedShow Answer

Which of the following statements concerning the embryonic cardiovascular system is true?

Correct AnswerverifiedShow Answer

Which of the following sequences is correct?

Correct AnswerverifiedShow Answer

The onset of puberty is signaled by

Correct AnswerverifiedShow Answer

In some neonates, the foramen ovale does not close to form the fossa ovalis. This would be called a/an ________.

Correct AnswerverifiedShow Answer

The allantois enlarges to form the ________.

Correct AnswerverifiedShow Answer

Which of the following statements concerning musculoskeletal system development is true?

Correct AnswerverifiedShow Answer

Type AB of the ABO blood group is an example of ________.

Correct AnswerverifiedShow Answer

Premature aging is called ________.

Correct AnswerverifiedShow Answer

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