Question 1

The stage of labor in which the fetus is expelled is

Accepted Answer

A)   the first stage.
B)   the second stage.
C)   the third stage.
D)   the fourth stage.
E)   the fifth stage.F) B) and E)
G) A) and B)

Question 2

Which germ layer is the thymus derived from?

Accepted Answer

A)   ectoderm
B)   mesoderm
C)   endodermD) None of the above
E) All of the above

Question 3

Which of the following structures originates as an evagination from the floor of the pharynx, moves into the neck, and loses its connection with the pharynx?

Accepted Answer

A)   pancreas
B)   thyroid gland
C)   adrenal medulla
D)   adenohypophysis
E)   parathyroid glandsF) A) and B)
G) A) and C)

Question 4

Many of the emotional characteristics of a person are formed during

Accepted Answer

A)   infancy.
B)   early childhood.
C)   adolescence.
D)   adulthood.
E)   neonatal period.F) A) and D)
G) A) and C)

Question 5

One of the major problems a premature infant may develop is respiratory distress syndrome. This occurs because in a premature infant

Accepted Answer

A)   oxygen transport is impaired.
B)   surfactant isn't produced.
C)   the lungs are collapsed.
D)   there aren't enough red blood cells to carry oxygen.
E)   there is mixing of the arterial and venous blood.F) A) and C)
G) C) and D)

Question 6

Which germ layer is tooth enamel derived from?

Accepted Answer

A)   ectoderm
B)   mesoderm
C)   endodermD) None of the above
E) All of the above

Question 7

Genes on the X chromosomes are

Accepted Answer

A)   polygenic.
B)   X-linked.
C)   simple.
D)   holandric.
E)   Y-linked.F) C) and D)
G) None of the above

Question 8

The cytotrophoblast

Accepted Answer

A)   forms the chorionic villi.
B)   replaces the syncytiotrophoblast.
C)   remains throughout development.
D)   forms branches that protrude into the amniotic cavity.
E)   is not an embryonic part of the placenta.F) None of the above
G) A) and B)

Question 9

Which germ layer are the bones (except facial)  derived from?

Accepted Answer

A)   ectoderm
B)   mesoderm
C)   endodermD) A) and B)
E) A) and C)

Question 10

Which of the following statements concerning the embryonic circulatory 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 E)
G) B) and D)

Question 11

The eyes develop as an evagination from the

Accepted Answer

A)   myelencephalon.
B)   mesencephalon.
C)   neural crest cells.
D)   diencephalon.
E)   telencephalon.F) None of the above
G) A) and E)

Question 12

Decreased renal filtration that occurs with aging can be the result of

Accepted Answer

A)   increased respiratory effort.
B)   decreased cardiac output.
C)   increased fluid volume.
D)   decreased ADH secretion.
E)   decreased peripheral resistance.F) B) and C)
G) B) and D)

Question 13

The process of forming three germ layers from the embryonic disk is called ______.

Accepted Answer

A)   gastrulation
B)   differentiation
C)   fertilization
D)   meiosis
E)   implantationF) C) and D)
G) A) and B)

Question 14

Which of the following is an example of incomplete dominance?

Accepted Answer

A)   minor thalassemia
B)   major thalassemia
C)   beta thalassemia
D)   polymorphism
E)   ABO blood groupsF) A) and C)
G) B) and D)

Question 15

What genetic disorder is characterized by lack of skin, hair, eye coloration?

Accepted Answer

A)   albinism
B)   sickle-cell disease
C)   hemophilia
D)   Down syndrome
E)   achondroplasiaF) A) and B)
G) A) and C)

Question 16

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)   hydrocephaly.F) C) and D)
G) A) and B)

Question 17

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 E)
G) A) and C)

Question 18

Depolarization of the oocyte plasma membrane occurs when the first sperm attaches to the integrin  α\alphaα 6 β\betaβ 1. This is called the

Accepted Answer

A)   slow block to polyspermy.
B)   acrosomal reaction.
C)   fast block to polyspermy.
D)   fertilization.
E)   spermiogenesis. F) A) and E)
G) A) and C)

Question 19

Puberty in females occurs _____ than in males.

Accepted Answer

A)   earlier
B)   later
C)   at the same timeD) All of the above
E) A) and B)

Question 20

Fine, soft hair that covers the fetus is called

Accepted Answer

A)   lanugo.
B)   fetal hair.
C)   colostrum.
D)   vernix caseosa.
E)   primary hair.F) A) and B)
G) A) and C)

Exam 29: Development, Growth, Aging, and Genetics

Which germ layer is tooth enamel derived from?

Correct AnswerverifiedShow Answer

Genes on the X chromosomes are

Correct AnswerverifiedShow Answer

Which of the following structures originates as an evagination from the floor of the pharynx, moves into the neck, and loses its connection with the pharynx?

Correct AnswerverifiedShow Answer

The stage of labor in which the fetus is expelled is

Correct AnswerverifiedShow Answer

Puberty in females occurs _____ than in males.

Correct AnswerverifiedShow Answer

The eyes develop as an evagination from the

Correct AnswerverifiedShow Answer

The cytotrophoblast

Correct AnswerverifiedShow Answer

Which germ layer is the thymus derived from?

Correct AnswerverifiedShow Answer

Which germ layer are the bones (except facial) derived from?

Correct AnswerverifiedShow Answer

The process of forming three germ layers from the embryonic disk is called ______.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What genetic disorder is characterized by lack of skin, hair, eye coloration?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

One of the major problems a premature infant may develop is respiratory distress syndrome. This occurs because in a premature infant

Correct AnswerverifiedShow Answer

Fine, soft hair that covers the fetus is called

Correct AnswerverifiedShow Answer

Many of the emotional characteristics of a person are formed during

Correct AnswerverifiedShow Answer

Which of the following is an example of incomplete dominance?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Decreased renal filtration that occurs with aging can be the result of

Correct AnswerverifiedShow Answer

Depolarization of the oocyte plasma membrane occurs when the first sperm attaches to the integrin α\alphaα 6 β\betaβ 1. This is called the

Correct AnswerverifiedShow Answer

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Depolarization of the oocyte plasma membrane occurs when the first sperm attaches to the integrin $\alpha$ 6 $\beta$ 1. This is called the

Correct Answer
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