Question 1

The embryonic membranes include all of the following except the

Accepted Answer

A) yolk sac. 
B) placenta. 
C) allantois. 
D) chorion. 
E) amnion. 
A) yolk sac. 
B) placenta. 
C) allantois. 
D) chorion. 
E) amnion. B

Question 2

The fossa ovalis is a remnant of the of the fetus.

Accepted Answer

A) ductus arteriosus 
B) ductus venosus 
C) umbilical artery 
D) umbilical vein 
E) foramen ovale 
A) ductus arteriosus 
B) ductus venosus 
C) umbilical artery 
D) umbilical vein 
E) foramen ovale E

Question 3

Life expectancy has steadily increased in the last century, whereas life span has not.

Accepted Answer

A) True 
 B)False  True

Question 4

The embryonic stage extends from 16 days through the end of week 8.

Accepted Answer

A) True 
 B)False

Question 5

As it implants, the conceptus is nourished by means of

Accepted Answer

A) trophoblastic nutrition. 
B) uterine milk. 
C) nutrient diffusion from the endometrium. 
D) placenta. 
E) umbilical nutrition. 
A) trophoblastic nutrition. 
B) uterine milk. 
C) nutrient diffusion from the endometrium. 
D) placenta. 
E) umbilical nutrition.

Question 6

Which of the following major events of prenatal development happens first?

Accepted Answer

A) the eyes are fully open 
B) the body is covered with lanugo 
C) bone calcification begins 
D) the central nervous system begins to form 
E) meconium accumulates in the intestines 
A) the eyes are fully open 
B) the body is covered with lanugo 
C) bone calcification begins 
D) the central nervous system begins to form 
E) meconium accumulates in the intestines

Question 7

A teratogen is most likely to cause

Accepted Answer

A) a deformity of the limbs. 
B) aneuploidy. 
C) trisomy. 
D) nondisjunction. 
E) a mutation. 
A) a deformity of the limbs. 
B) aneuploidy. 
C) trisomy. 
D) nondisjunction. 
E) a mutation.

Question 8

The most likely outcome of nondisjunction is the production of a gamete receiving

Accepted Answer

A) no chromosomes. 
B) 46 chromosomes. 
C) 44 chromosomes. 
D) 23 chromosomes. 
E) 22 chromosomes. 
A) no chromosomes. 
B) 46 chromosomes. 
C) 44 chromosomes. 
D) 23 chromosomes. 
E) 22 chromosomes.

Question 9

The first body cavity is called the

Accepted Answer

A) coelom. 
B) amniotic cavity. 
C) yolk sac. 
D) somite. 
E) chorion. 
A) coelom. 
B) amniotic cavity. 
C) yolk sac. 
D) somite. 
E) chorion.

Question 10

Infant respiratory distress syndrome (IRDS) is caused by

Accepted Answer

A) production of very thick respiratory mucus. 
B) deficiency of pulmonary surfactant. 
C) underdeveloped respiratory epithelium. 
D) pulmonary edema. 
E) overinflated alveoli. 
A) production of very thick respiratory mucus. 
B) deficiency of pulmonary surfactant. 
C) underdeveloped respiratory epithelium. 
D) pulmonary edema. 
E) overinflated alveoli.

Question 11

Trophoblastic nutrition refers to the nutrition of the conceptus before it implants.

Accepted Answer

A) True 
 B)False

Question 12

The completely encloses the embryo and provides a stable environment for it.

Accepted Answer

A) yolk sac 
B) amnion 
C) chorion 
D) chorionic villus 
E) allantois 
A) yolk sac 
B) amnion 
C) chorion 
D) chorionic villus 
E) allantois

Question 13

The heat loss of the neonate is compensated for to some extent by the thermal insulation provided by
brown fat.

Accepted Answer

A) True 
 B)False

Question 14

During implantation, the embryoblast undergoes gastrulation.

Accepted Answer

A) True 
 B)False

Question 15

Urine retention is a greater problem for elderly men than for elderly women because men

Accepted Answer

A) usually develop benign prostatic hyperplasia. 
B) have larger bladders. 
C) have weaker urinary sphincters. 
D) have narrower ureters. 
E) have fewer glomeruli. 
A) usually develop benign prostatic hyperplasia. 
B) have larger bladders. 
C) have weaker urinary sphincters. 
D) have narrower ureters. 
E) have fewer glomeruli.

Question 16

The slow block refers to the mechanism that prevents fertilization of another egg when one is already
pregnant.

Accepted Answer

A) True 
 B)False

Question 17

During birth, an infant is normally stimulated to breathe by

Accepted Answer

A) CO₂ accumulating in the baby's blood. 
B) an increased O₂ level in the baby's new environment. 
C) prostaglandins. 
D) surfactant. 
E) spanking him/her. 
A) CO₂ accumulating in the baby's blood. 
B) an increased O₂ level in the baby's new environment. 
C) prostaglandins. 
D) surfactant. 
E) spanking him/her.

Question 18

Congenital anomalies can result from all of the following except

Accepted Answer

A) an infectious disease in the mother during pregnancy. 
B) a genetic disorder. 
C) exposure to teratogens during pregnancy. 
D) smoking during lactation. 
E) smoking during pregnancy. 
A) an infectious disease in the mother during pregnancy. 
B) a genetic disorder. 
C) exposure to teratogens during pregnancy. 
D) smoking during lactation. 
E) smoking during pregnancy.

Question 19

Senescence begins at different ages and progresses at different rates in different organ systems.

Accepted Answer

A) True 
 B)False

Question 20

Muscular weakness tends to develop in old age for all of the following reasons except

Accepted Answer

A) aged muscle has less glycogen, myoglobin, and creatine phosphate. 
B) there are fewer motor neurons in the spinal cord. 
C) aged muscle fibers have fewer myofibrils. 
D) there are fewer and smaller mitochondria. 
E) myocytes do not synthesize myosin anymore. 
A) aged muscle has less glycogen, myoglobin, and creatine phosphate. 
B) there are fewer motor neurons in the spinal cord. 
C) aged muscle fibers have fewer myofibrils. 
D) there are fewer and smaller mitochondria. 
E) myocytes do not synthesize myosin anymore.

Exam 29: Human Development and Aging

The embryonic membranes include all of the following except the

The fossa ovalis is a remnant of the of the fetus.

Life expectancy has steadily increased in the last century, whereas life span has not.

The embryonic stage extends from 16 days through the end of week 8.

As it implants, the conceptus is nourished by means of

Which of the following major events of prenatal development happens first?

A teratogen is most likely to cause

The most likely outcome of nondisjunction is the production of a gamete receiving

The first body cavity is called the

Infant respiratory distress syndrome (IRDS) is caused by

Trophoblastic nutrition refers to the nutrition of the conceptus before it implants.

The completely encloses the embryo and provides a stable environment for it.

The heat loss of the neonate is compensated for to some extent by the thermal insulation provided by brown fat.

During implantation, the embryoblast undergoes gastrulation.

Urine retention is a greater problem for elderly men than for elderly women because men

The slow block refers to the mechanism that prevents fertilization of another egg when one is already pregnant.

During birth, an infant is normally stimulated to breathe by

Congenital anomalies can result from all of the following except

Senescence begins at different ages and progresses at different rates in different organ systems.

Muscular weakness tends to develop in old age for all of the following reasons except

Major Themes of Anatomy and Physiology

The Chemistry of Life

Cellular Form and Function

Genes and Cellular Function

The Human Tissues

The Integumentary System

Bone Tissue

The Skeletal System

Joints

The Muscular System

Muscular Tissue

Nervous Tissue

The Spinal Cord, Spinal Nerves, and Somatic Reflexes

The Brain and Cranial Nerves

The Autonomic Nervous System and Visceral Reflexes

Sense Organs

The Endocrine System

The Circulatory System: Blood

The Circulatory System: Heart

The Circulatory System: Blood Vessels and Circulation

The Lymphatic and Immune Systems

The Respiratory System

The Urinary System

Fluid, Electrolyte, and Acid - Base Balance

The Digestive System

Nutrition and Metabolism

The Male Reproductive System

The Female Reproductive System

Anatomical Terminology and Body Planes

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