Question 1

During amphimixis,

Accepted Answer

A) sperm become haploid. 
B) the ovum finishes meiosis II. 
C) the male and female pronuclei fuse. 
D) meiosis occurs. 
E) gametes are formed. 
A) sperm become haploid. 
B) the ovum finishes meiosis II. 
C) the male and female pronuclei fuse. 
D) meiosis occurs. 
E) gametes are formed. C

Question 2

Events in the first 12 weeks of gestation establish the basis for ________,the process of organ formation.

Accepted Answer

A) organogenesis 
B) morphogenesis 
C) gametogenesis 
D) teratogenesis 
E) embryogenesis 
A) organogenesis 
B) morphogenesis 
C) gametogenesis 
D) teratogenesis 
E) embryogenesis A

Question 3

Blood flows to the placenta through ________ umbilical artery(ies).

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5 B

Question 4

During the ________ stage,the placenta is expelled from the uterus.

Accepted Answer

A) expulsion 
B) dilation 
C) crowning 
D) exit 
E) placental 
A) expulsion 
B) dilation 
C) crowning 
D) exit 
E) placental

Question 5

The process by which a viable embryo is formed is called

Accepted Answer

A) embryogenesis. 
B) organogenesis. 
C) gametogenesis. 
D) morphogenesis. 
E) blastogenesis. 
A) embryogenesis. 
B) organogenesis. 
C) gametogenesis. 
D) morphogenesis. 
E) blastogenesis.

Question 6

If a sperm carrying the "Y" chromosome fertilizes the ovum,the resulting offspring will be

Accepted Answer

A) haploid. 
B) Rh positive blood type. 
C) male. 
D) fraternal twins. 
E) female. 
A) haploid. 
B) Rh positive blood type. 
C) male. 
D) fraternal twins. 
E) female.

Question 7

A zygote whose genotype is XX will develop as a

Accepted Answer

A) female. 
B) male. 
A) female. 
B) male.

Question 8

After fertilization,the first cell division is completed

Accepted Answer

A) within a few seconds. 
B) within the hour. 
C) about 6 hours later. 
D) in 12 hours. 
E) more than a day later. 
A) within a few seconds. 
B) within the hour. 
C) about 6 hours later. 
D) in 12 hours. 
E) more than a day later.

Question 9

The layer of follicle cells that surround the unfertilized egg is called the

Accepted Answer

A) zona pellucida. 
B) corona radiata. 
C) Graafian follicle. 
D) functional zone. 
E) tunica follicularis. 
A) zona pellucida. 
B) corona radiata. 
C) Graafian follicle. 
D) functional zone. 
E) tunica follicularis.

Question 10

The almost identical cells produced by cleavage divisions are called

Accepted Answer

A) centromeres. 
B) blastomeres. 
C) telomeres. 
D) myosomes. 
E) somal cells. 
A) centromeres. 
B) blastomeres. 
C) telomeres. 
D) myosomes. 
E) somal cells.

Question 11

By day 12 of embryonic development,mesoderm begins to form through

Accepted Answer

A) embryolization. 
B) gastrulation. 
C) mitosis. 
D) meiosis. 
E) None of the answers is correct. 
A) embryolization. 
B) gastrulation. 
C) mitosis. 
D) meiosis. 
E) None of the answers is correct.

Question 12

A blastocyst is a(n)

Accepted Answer

A) extraembryonic membrane. 
B) solid ball of cells. 
C) hollow ball of cells. 
D) portion of the placenta. 
E) origin of the urinary bladder. 
A) extraembryonic membrane. 
B) solid ball of cells. 
C) hollow ball of cells. 
D) portion of the placenta. 
E) origin of the urinary bladder.

Question 13

Figure 29-2 Fetus at 10 Weeks
Use Figure 29-2 to answer the following questions:
-Identify the structure labeled "4."

Accepted Answer

A) amnion 
B) chorion 
C) decidua basalis 
D) placenta 
E) endometrium 
A) amnion 
B) chorion 
C) decidua basalis 
D) placenta 
E) endometrium

Question 14

List and briefly characterize the three trimesters of gestation.

Accepted Answer

For convenience,we think of the gestatio

Question 15

The gradual modification of anatomical structures and physiologic characteristics from fertilization to maturity is termed

Accepted Answer

A) gametogenesis. 
B) ontogeny. 
C) development. 
D) transformation. 
E) disablement. 
A) gametogenesis. 
B) ontogeny. 
C) development. 
D) transformation. 
E) disablement.

Question 16

Which of the following does not occur during pregnancy?

Accepted Answer

A) A woman's respiratory rate and tidal volume increase. 
B) Maternal blood volume increases. 
C) Maternal nutrient requirements increase. 
D) A woman's glomerular filtration rate increases. 
E) A woman's bladder capacity increases. 
A) A woman's respiratory rate and tidal volume increase. 
B) Maternal blood volume increases. 
C) Maternal nutrient requirements increase. 
D) A woman's glomerular filtration rate increases. 
E) A woman's bladder capacity increases.

Question 17

The part of the endometrium that covers the implanted embryo and lacks chorionic villi is the

Accepted Answer

A) decidua parietalis. 
B) decidua albicans. 
C) decidua functionalis. 
D) decidua capsularis. 
E) decidua basalis. 
A) decidua parietalis. 
B) decidua albicans. 
C) decidua functionalis. 
D) decidua capsularis. 
E) decidua basalis.

Question 18

The hormone called the hormone of pregnancy,inhibiting uterine contractions,is

Accepted Answer

A) hCG. 
B) relaxin. 
C) placental lactogen. 
D) progesterone. 
E) All of the answers are correct. 
A) hCG. 
B) relaxin. 
C) placental lactogen. 
D) progesterone. 
E) All of the answers are correct.

Question 19

The first stage of labor is the ________ stage.

Accepted Answer

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

Question 20

Which embryonic germ layer forms the linings of the respiratory and digestive tracts?

Accepted Answer

A) mesoderm 
B) ectoderm 
C) trophoderm 
D) endoderm 
E) epiderm 
A) mesoderm 
B) ectoderm 
C) trophoderm 
D) endoderm 
E) epiderm

Exam 29: Development and Inheritance

During amphimixis,

Events in the first 12 weeks of gestation establish the basis for ________,the process of organ formation.

Blood flows to the placenta through ________ umbilical artery(ies).

During the ________ stage,the placenta is expelled from the uterus.

The process by which a viable embryo is formed is called

If a sperm carrying the "Y" chromosome fertilizes the ovum,the resulting offspring will be

A zygote whose genotype is XX will develop as a

After fertilization,the first cell division is completed

The layer of follicle cells that surround the unfertilized egg is called the

The almost identical cells produced by cleavage divisions are called

By day 12 of embryonic development,mesoderm begins to form through

A blastocyst is a(n)

Figure 29-2 Fetus at 10 Weeks Use Figure 29-2 to answer the following questions: -Identify the structure labeled "4."

List and briefly characterize the three trimesters of gestation.

The gradual modification of anatomical structures and physiologic characteristics from fertilization to maturity is termed

Which of the following does not occur during pregnancy?

The part of the endometrium that covers the implanted embryo and lacks chorionic villi is the

The hormone called the hormone of pregnancy,inhibiting uterine contractions,is

The first stage of labor is the ________ stage.

Which embryonic germ layer forms the linings of the respiratory and digestive tracts?

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

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