Question 1

Near the end of the first trimester, deoxygenated blood flows from the developing embryo or fetus to the placenta through

Accepted Answer

A) paired umbilical veins. 
B) the superior vena cava. 
C) one umbilical vein. 
D) three umbilical arteries. 
E) paired umbilical arteries. 
A) paired umbilical veins. 
B) the superior vena cava. 
C) one umbilical vein. 
D) three umbilical arteries. 
E) paired umbilical arteries. E

Question 2

The period of gestation that is characterized by rapid fetal growth and adipose tissue deposition is the ________ trimester(s).

Accepted Answer

A) first 
B) second 
C) third 
D) first and second 
E) second and third 
A) first 
B) second 
C) third 
D) first and second 
E) second and third C

Question 3

Choose the correct statement about amphimixis.

Accepted Answer

A) a process that results in a zygote 
B) a genetic disorder based on autosomal dominance 
C) the transition from morula to blastocyst 
D) the time during which sperm travel toward the ovum 
E) the formation of the male and female pronuclei 
A) a process that results in a zygote 
B) a genetic disorder based on autosomal dominance 
C) the transition from morula to blastocyst 
D) the time during which sperm travel toward the ovum 
E) the formation of the male and female pronuclei A

Question 4

The last stage of labor is the

Accepted Answer

A) dilation stage. 
B) expulsion stage. 
C) placental stage. 
D) decidual stage. 
E) neonate stage. 
A) dilation stage. 
B) expulsion stage. 
C) placental stage. 
D) decidual stage. 
E) neonate stage.

Question 5

Distortion of the cervix stimulates maternal release of which hormone?

Accepted Answer

A) estrogen 
B) progesterone 
C) oxytocin 
D) relaxin 
E) human chorionic gonadotropin 
A) estrogen 
B) progesterone 
C) oxytocin 
D) relaxin 
E) human chorionic gonadotropin

Question 6

Figure 20-1 Events in Implantation
Use Figure 20-1 to identify the labeled part.
-Label A represents which of the following structures?

Accepted Answer

A) syncytial trophoblast 
B) developing villi 
C) lacuna 
D) uterine glands 
E) amniotic cavity 
A) syncytial trophoblast 
B) developing villi 
C) lacuna 
D) uterine glands 
E) amniotic cavity

Question 7

Ova carry

Accepted Answer

A) one X sex chromosome. 
B) XX sex chromosomes. 
C) YY sex chromosomes. 
D) XO sex chromosomes. 
E) one Y sex chromosome. 
A) one X sex chromosome. 
B) XX sex chromosomes. 
C) YY sex chromosomes. 
D) XO sex chromosomes. 
E) one Y sex chromosome.

Question 8

The hollow cavity within the blastocyst is the

Accepted Answer

A) gastrula. 
B) morula. 
C) blastocoele. 
D) yolk sac. 
E) amnion. 
A) gastrula. 
B) morula. 
C) blastocoele. 
D) yolk sac. 
E) amnion.

Question 9

Fertilization of the ovum usually occurs

Accepted Answer

A) within one hour of ovulation. 
B) as much as three to four days following ovulation. 
C) in the ovary. 
D) in the upper third of the uterine tube. 
E) in the uterus. 
A) within one hour of ovulation. 
B) as much as three to four days following ovulation. 
C) in the ovary. 
D) in the upper third of the uterine tube. 
E) in the uterus.

Question 10

The period of sexual and physical maturation is (the)

Accepted Answer

A) infancy. 
B) childhood. 
C) senescence. 
D) adolescence. 
E) neonatal period. 
A) infancy. 
B) childhood. 
C) senescence. 
D) adolescence. 
E) neonatal period.

Question 11

The morula stage occurs during which process?

Accepted Answer

A) embryogenesis 
B) placentation 
C) gastrulation 
D) implantation 
E) cleavage 
A) embryogenesis 
B) placentation 
C) gastrulation 
D) implantation 
E) cleavage

Question 12

A(n)________ allele will always be expressed regardless of what the other allele happens to be.

Accepted Answer

A) heterozygous 
B) sex-linked 
C) recessive 
D) dominant 
E) autosomal 
A) heterozygous 
B) sex-linked 
C) recessive 
D) dominant 
E) autosomal

Question 13

The first extraembryonic membrane to appear is the

Accepted Answer

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

Question 14

Which process begins as the surface of the blastocyst next to the inner cell mass adheres to the uterine lining?

Accepted Answer

A) oocyte activation 
B) placentation 
C) embryogenesis 
D) implantation 
E) blastocyst formation 
A) oocyte activation 
B) placentation 
C) embryogenesis 
D) implantation 
E) blastocyst formation

Question 15

Which statement regarding placental circulation is true?

Accepted Answer

A) Oxygenated maternal blood re-enters the mother's venous system through chorionic villi. 
B) Maternal and fetal blood mix near the placenta. 
C) Deoxygenated maternal blood re-enters the mother's venous system through small uterine veins. 
D) Deoxygenated blood leaves the chorionic villi through umbilical arteries. 
E) Oxygenated fetal blood enters the chorionic villi through umbilical arteries. 
A) Oxygenated maternal blood re-enters the mother's venous system through chorionic villi. 
B) Maternal and fetal blood mix near the placenta. 
C) Deoxygenated maternal blood re-enters the mother's venous system through small uterine veins. 
D) Deoxygenated blood leaves the chorionic villi through umbilical arteries. 
E) Oxygenated fetal blood enters the chorionic villi through umbilical arteries.

Question 16

Which of the following phenotypic characteristics is an example of "codominance"?

Accepted Answer

A) normal skin pigmentation 
B) hair color other than pure blond or red 
C) presence of Rh factor on red blood cell membranes 
D) presence of A or B antigens on red blood cell membranes 
E) ability to taste phenylthiocarbamate (PT
C)  
A) normal skin pigmentation 
B) hair color other than pure blond or red 
C) presence of Rh factor on red blood cell membranes 
D) presence of A or B antigens on red blood cell membranes 
E) ability to taste phenylthiocarbamate (PT
C)

Question 17

When two separate oocytes are ovulated and fertilized, ________ develop.

Accepted Answer

A) identical twins 
B) conjoined twins 
C) monozygotic twins 
D) polygametic twins 
E) dizygotic twins 
A) identical twins 
B) conjoined twins 
C) monozygotic twins 
D) polygametic twins 
E) dizygotic twins

Question 18

Which of the following is an autosomal dominant inherited disorder?

Accepted Answer

A) Huntington's disease 
B) sickle cell anemia 
C) Duchenne muscular dystrophy 
D) color blindness 
E) deafness 
A) Huntington's disease 
B) sickle cell anemia 
C) Duchenne muscular dystrophy 
D) color blindness 
E) deafness

Question 19

Which of the following results from endodermal contributions?

Accepted Answer

A) all cardiovascular components 
B) brain and spinal cord 
C) dermis and hypodermis 
D) stem cells that produce gametes 
E) nephrons 
A) all cardiovascular components 
B) brain and spinal cord 
C) dermis and hypodermis 
D) stem cells that produce gametes 
E) nephrons

Question 20

The aging process is called

Accepted Answer

A) neonate stage. 
B) puberty. 
C) senescence. 
D) adolescence. 
E) weaning. 
A) neonate stage. 
B) puberty. 
C) senescence. 
D) adolescence. 
E) weaning.

Near the end of the first trimester, deoxygenated blood flows from the developing embryo or fetus to the placenta through

The period of gestation that is characterized by rapid fetal growth and adipose tissue deposition is the ________ trimester(s).

Choose the correct statement about amphimixis.

The last stage of labor is the

Distortion of the cervix stimulates maternal release of which hormone?

Figure 20-1 Events in Implantation Use Figure 20-1 to identify the labeled part. -Label A represents which of the following structures?

Ova carry

The hollow cavity within the blastocyst is the

Fertilization of the ovum usually occurs

The period of sexual and physical maturation is (the)

The morula stage occurs during which process?

A(n)________ allele will always be expressed regardless of what the other allele happens to be.

The first extraembryonic membrane to appear is the

Which process begins as the surface of the blastocyst next to the inner cell mass adheres to the uterine lining?

Which statement regarding placental circulation is true?

Which of the following phenotypic characteristics is an example of "codominance"?

When two separate oocytes are ovulated and fertilized, ________ develop.

Which of the following is an autosomal dominant inherited disorder?

Which of the following results from endodermal contributions?

The aging process is called

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

The Reproductive System

Filters

Exam 20: Development and Inheritance

Near the end of the first trimester, deoxygenated blood flows from the developing embryo or fetus to the placenta through

The period of gestation that is characterized by rapid fetal growth and adipose tissue deposition is the ________ trimester(s).

Choose the correct statement about amphimixis.

The last stage of labor is the

Distortion of the cervix stimulates maternal release of which hormone?

Figure 20-1 Events in Implantation Use Figure 20-1 to identify the labeled part. -Label A represents which of the following structures?

Ova carry

The hollow cavity within the blastocyst is the

Fertilization of the ovum usually occurs

The period of sexual and physical maturation is (the)

The morula stage occurs during which process?

A(n)________ allele will always be expressed regardless of what the other allele happens to be.

The first extraembryonic membrane to appear is the

Which process begins as the surface of the blastocyst next to the inner cell mass adheres to the uterine lining?

Which statement regarding placental circulation is true?

Which of the following phenotypic characteristics is an example of "codominance"?

When two separate oocytes are ovulated and fertilized, ________ develop.

Which of the following is an autosomal dominant inherited disorder?

Which of the following results from endodermal contributions?

The aging process is called

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

The Reproductive System

Filters