Question 1

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

Question 2

The male and female reproductive systems begin as an indifferent stage. If testosterone is present, which of the following occurs?

Accepted Answer

A)  The paramesonephric duct forms the vagina. 
B)  The mesonephric ducts form the ductus deferens. 
C)  The mesonephric ducts atrophy. 
D)  The paramesonephric ducts enlarge to form the scrotum. 
E)  The paramesonephric duct atrophies. 
A)  The paramesonephric duct forms the vagina. 
B)  The mesonephric ducts form the ductus deferens. 
C)  The mesonephric ducts atrophy. 
D)  The paramesonephric ducts enlarge to form the scrotum. 
E)  The paramesonephric duct atrophies.

Question 3

Which of the following genotypes will result in a male?

Accepted Answer

A)  XO 
B)  XY 
C)  XX 
D)  XXX 
E)  YY 
A)  XO 
B)  XY 
C)  XX 
D)  XXX 
E)  YY

Question 4

The inner cell mass of the blastocyst

Accepted Answer

A)  consists of yolk-filled storage cells. 
B)  contains cells that will form the embryo. 
C)  represents the future placenta. 
D)  will form the zona pellucida. 
E)  contains cells that are discarded. 
A)  consists of yolk-filled storage cells. 
B)  contains cells that will form the embryo. 
C)  represents the future placenta. 
D)  will form the zona pellucida. 
E)  contains cells that are discarded.

Question 5

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 glands 
A)  Pancreas 
B)  Thyroid gland 
C)  Adrenal medulla 
D)  Adenohypophysis 
E)  Parathyroid glands

Question 6

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

Accepted Answer

A)  The epidermis is derived from mesoderm. 
B)  The melanocytes are derived from ectoderm. 
C)  Nails, hair, and glands develop from the dermis. 
D)  Sensory receptors in the skin are derived from the epidermis. 
E)  Collagen fibers do not appear until after birth. 
A)  The epidermis is derived from mesoderm. 
B)  The melanocytes are derived from ectoderm. 
C)  Nails, hair, and glands develop from the dermis. 
D)  Sensory receptors in the skin are derived from the epidermis. 
E)  Collagen fibers do not appear until after birth.

Question 7

The genotype WW is best described as ________.

Accepted Answer

A)  homozygous recessive 
B)  homozygous dominant 
C)  heterozygous dominant 
D)  heterozygous recessive 
E)  homorecessive 
A)  homozygous recessive 
B)  homozygous dominant 
C)  heterozygous dominant 
D)  heterozygous recessive 
E)  homorecessive

Question 8

What term describes the inheritance of a trait which in the heterozygote has an intermediate expression between either allele?

Accepted Answer

A)  Incomplete penetrance 
B)  Incomplete dominance 
C)  Complete dominance 
D)  Codominance 
A)  Incomplete penetrance 
B)  Incomplete dominance 
C)  Complete dominance 
D)  Codominance

Question 9

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. 
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.

Question 10

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 11

Which of the following fetal shunts connects the umbilical vein with the inferior vena cava?

Accepted Answer

A)  Ductus arteriosus 
B)  Umbilical vein 
C)  Umbilical artery 
D)  Ductus venosus 
E)  Foramen ovale 
A)  Ductus arteriosus 
B)  Umbilical vein 
C)  Umbilical artery 
D)  Ductus venosus 
E)  Foramen ovale

Question 12

Which of the following is an example of incomplete dominance?

Accepted Answer

A)  Minor thalassemia 
B)  Major thalassemia 
C)  Beta thalassemia 
D)  Polymorphism 
E)  Type AB blood type 
A)  Minor thalassemia 
B)  Major thalassemia 
C)  Beta thalassemia 
D)  Polymorphism 
E)  Type AB blood type

Question 13

A ________ is a display of the chromosomes of a somatic cell during metaphase of mitosis.

Accepted Answer

A)  karyotype 
B)  genome 
C)  gamete 
D)  locus 
A)  karyotype 
B)  genome 
C)  gamete 
D)  locus

Question 14

Which of the following vitamins are thought to play a role in decreasing the physiological changes in aging?

Accepted Answer

A)  Vitamins A and B12 
B)  Vitamins A and B6 
C)  Vitamins E and C 
D)  Vitamins A and D 
E)  Vitamins A and K 
A)  Vitamins A and B12 
B)  Vitamins A and B6 
C)  Vitamins E and C 
D)  Vitamins A and D 
E)  Vitamins A and K

Question 15

The closed foramen ovale becomes the ________ after birth.

Accepted Answer

A)  fossa ovalis 
B)  ligamentum ovale 
C)  ligamentum venosum 
D)  ligamentum arteriosum 
E)  valves 
A)  fossa ovalis 
B)  ligamentum ovale 
C)  ligamentum venosum 
D)  ligamentum arteriosum 
E)  valves

Question 16

Which of the following findings of Mendel's work are currently accepted as a valid explanation of genetic inheritance?

Accepted Answer

A)  Genes exist in pairs in an individual. 
B)  Gene pairs separate during gamete formation. 
C)  Gene pair segregation is relatively random during gamete formation. 
D)  All of the choices are correct. 
A)  Genes exist in pairs in an individual. 
B)  Gene pairs separate during gamete formation. 
C)  Gene pair segregation is relatively random during gamete formation. 
D)  All of the choices are correct.

Question 17

The birth process is called ________.

Accepted Answer

A)  micturition 
B)  gastrulation 
C)  organogenesis 
D)  parturition 
E)  expulsion 
A)  micturition 
B)  gastrulation 
C)  organogenesis 
D)  parturition 
E)  expulsion

Question 18

The hormone(s) responsible for preparing the breasts for lactation during pregnancy is/are ________.

Accepted Answer

A)  estrogen 
B)  progesterone 
C)  oxytocin 
D)  prolactin 
E)  Both "estrogen" and "progesterone" are correct. 
A)  estrogen 
B)  progesterone 
C)  oxytocin 
D)  prolactin 
E)  Both "estrogen" and "progesterone" are correct.

Question 19

A person's height, intelligence, eye color, and skin color are examples of ________.

Accepted Answer

A)  incomplete dominance 
B)  complete dominance 
C)  complete recessiveness 
D)  codominance 
E)  polygenic traits 
A)  incomplete dominance 
B)  complete dominance 
C)  complete recessiveness 
D)  codominance 
E)  polygenic traits

Question 20

Cryptorchidism

Accepted Answer

A)  is the failure of the testes to descend into the scrotal sac. 
B)  may be due to excessive amounts of testosterone in the fetus. 
C)  has no effect on fertility. 
D)  results in feminization of the male fetus. 
E)  is the lack of testes. 
A)  is the failure of the testes to descend into the scrotal sac. 
B)  may be due to excessive amounts of testosterone in the fetus. 
C)  has no effect on fertility. 
D)  results in feminization of the male fetus. 
E)  is the lack of testes.

Exam 29: Development, Growth, Aging, and Genetics

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

The male and female reproductive systems begin as an indifferent stage. If testosterone is present, which of the following occurs?

Which of the following genotypes will result in a male?

The inner cell mass of the blastocyst

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?

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

The genotype WW is best described as ________.

What term describes the inheritance of a trait which in the heterozygote has an intermediate expression between either allele?

The cytotrophoblast

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

Which of the following fetal shunts connects the umbilical vein with the inferior vena cava?

Which of the following is an example of incomplete dominance?

A ________ is a display of the chromosomes of a somatic cell during metaphase of mitosis.

Which of the following vitamins are thought to play a role in decreasing the physiological changes in aging?

The closed foramen ovale becomes the ________ after birth.

Which of the following findings of Mendel's work are currently accepted as a valid explanation of genetic inheritance?

The birth process is called ________.

The hormone(s) responsible for preparing the breasts for lactation during pregnancy is/are ________.

A person's height, intelligence, eye color, and skin color are examples of ________.

Cryptorchidism

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joint and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive System

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