Question 1

In fetal circulation,the blood containing the highest amount of oxygen is found in the

Accepted Answer

A) aorta. 
B) umbilical vein. 
C) ductus arteriosus. 
D) umbilical arteries. 
E) heart. 
A) aorta. 
B) umbilical vein. 
C) ductus arteriosus. 
D) umbilical arteries. 
E) heart.

Question 2

The clinical age of the unborn child is calculated from

Accepted Answer

A) ovulation. 
B) conception. 
C) the last menstrual period. 
D) fourteen days after the last menstrual period. 
E) fourteen days before the last menstrual period. 
A) ovulation. 
B) conception. 
C) the last menstrual period. 
D) fourteen days after the last menstrual period. 
E) fourteen days before the last menstrual period.

Question 3

Fine,soft hair that covers the fetus is called

Accepted Answer

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

Question 4

The process of meiosis will _____ as the gametes are produced.

Accepted Answer

A) cut the chromosome number by 1/3 
B) cut the chromosome number by 1/2 
C) double the chromosome number 
D) not change the chromosome number 
E) triple the chromosome number 
A) cut the chromosome number by 1/3 
B) cut the chromosome number by 1/2 
C) double the chromosome number 
D) not change the chromosome number 
E) triple the chromosome number

Question 5

An embryonic cell that has the potential to develop into a wide range of tissues is called a/an

Accepted Answer

A) differentiated cell. 
B) multipotent cell. 
C) pluripotent cell. 
D) omnipotent cell. 
E) totipotent cell. 
A) differentiated cell. 
B) multipotent cell. 
C) pluripotent cell. 
D) omnipotent cell. 
E) totipotent cell.

Question 6

The chorionic villi

Accepted Answer

A) form from branches of the syncytiotrophoblast cords. 
B) increase surface area of the amniotic cavity. 
C) contribute to the formation of the placenta. 
D) are necessary for implantation to occur. 
E) are not part of the placental formation. 
A) form from branches of the syncytiotrophoblast cords. 
B) increase surface area of the amniotic cavity. 
C) contribute to the formation of the placenta. 
D) are necessary for implantation to occur. 
E) are not part of the placental formation.

Question 7

Where does implantation normally occur?

Accepted Answer

A) in the fundus area of the uterus 
B) in the isthmus area of the uterine tube 
C) in the cervix area of the uterus 
D) in the infundibulum area of the uterine tube 
A) in the fundus area of the uterus 
B) in the isthmus area of the uterine tube 
C) in the cervix area of the uterus 
D) in the infundibulum area of the uterine tube

Question 8

Which of the following fetal shunts bypasses the fetal lungs?

Accepted Answer

A) ductus arteriosus 
B) ductus venosus 
C) umbilical arteries 
D) umbilical vein 
E) ductus byosus 
A) ductus arteriosus 
B) ductus venosus 
C) umbilical arteries 
D) umbilical vein 
E) ductus byosus

Question 9

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 10

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

Accepted Answer

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

Question 11

Which of the following events near the end of pregnancy might indicate parturition is near?

Accepted Answer

A) The cervix gradually constricts. 
B) The uterus begins regular contractions. 
C) The amniotic sac becomes edematous. 
D) The fetal heart rate increases to greater than 160 beats per minute. 
E) The cervix shrinks. 
A) The cervix gradually constricts. 
B) The uterus begins regular contractions. 
C) The amniotic sac becomes edematous. 
D) The fetal heart rate increases to greater than 160 beats per minute. 
E) The cervix shrinks.

Question 12

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

Accepted Answer

A) Skeletal muscles develop from crest cells. 
B) Myoblasts produce somites. 
C) The vertebral column develops from somite-derived mesoderm. 
D) Enlargement of muscles after birth is due to an increase in the number of muscle fibers. 
E) Ossification ends before birth. 
A) Skeletal muscles develop from crest cells. 
B) Myoblasts produce somites. 
C) The vertebral column develops from somite-derived mesoderm. 
D) Enlargement of muscles after birth is due to an increase in the number of muscle fibers. 
E) Ossification ends before birth.

Question 13

Which of the following is derived from endoderm?

Accepted Answer

A) brain 
B) muscle 
C) epidermis of the skin 
D) lining of the digestive tract 
E) cardiovascular system 
A) brain 
B) muscle 
C) epidermis of the skin 
D) lining of the digestive tract 
E) cardiovascular system

Question 14

The major difference between an embryo and a fetus is that

Accepted Answer

A) a fetus can survive outside the mother's womb but an embryo cannot. 
B) a fetus is smaller than an embryo. 
C) organ systems are developing in an embryo while all organs are present in a fetus. 
D) a fetus is a male child while an embryo is a female child. 
E) None of these choices is correct. 
A) a fetus can survive outside the mother's womb but an embryo cannot. 
B) a fetus is smaller than an embryo. 
C) organ systems are developing in an embryo while all organs are present in a fetus. 
D) a fetus is a male child while an embryo is a female child. 
E) None of these choices is correct.

Question 15

Developmental events are calculated from

Accepted Answer

A) ovulation. 
B) conception. 
C) the last menstrual period. 
D) fourteen days after the last menstrual period. 
E) fourteen days before the last menstrual period. 
A) ovulation. 
B) conception. 
C) the last menstrual period. 
D) fourteen days after the last menstrual period. 
E) fourteen days before the last menstrual period.

Question 16

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. 
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.

Question 17

Puberty in females occurs _____ than in males.

Accepted Answer

A) earlier 
B) later 
C) at the same time 
A) earlier 
B) later 
C) at the same time

Question 18

Germ layers form during the ____ period while organ systems mature during the ____ period.

Accepted Answer

A) embryonic; fetal 
B) prenatal; neonatal 
C) germinal; embryonic 
D) germinal; fetal 
E) fetal; germinal 
A) embryonic; fetal 
B) prenatal; neonatal 
C) germinal; embryonic 
D) germinal; fetal 
E) fetal; germinal

Question 19

Some epiblast cells migrate and emerge between the epiblast and endoderm as a new germ layer called the

Accepted Answer

A) yolk sac. 
B) mesoglia. 
C) notochord. 
D) mesoderm. 
E) primitive streak. 
A) yolk sac. 
B) mesoglia. 
C) notochord. 
D) mesoderm. 
E) primitive streak.

Question 20

The prenatal period during which the major organ systems form is the

Accepted Answer

A) fetal period. 
B) germinal period. 
C) embryonic period. 
D) neonatal period. 
A) fetal period. 
B) germinal period. 
C) embryonic period. 
D) neonatal period.

Exam 29: Development,growth,aging,and Genetics

In fetal circulation,the blood containing the highest amount of oxygen is found in the

The clinical age of the unborn child is calculated from

Fine,soft hair that covers the fetus is called

The process of meiosis will _____ as the gametes are produced.

An embryonic cell that has the potential to develop into a wide range of tissues is called a/an

The chorionic villi

Where does implantation normally occur?

Which of the following fetal shunts bypasses the fetal lungs?

The genotype WW is best described as

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

Which of the following events near the end of pregnancy might indicate parturition is near?

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

Which of the following is derived from endoderm?

The major difference between an embryo and a fetus is that

Developmental events are calculated from

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

Puberty in females occurs _____ than in males.

Germ layers form during the ____ period while organ systems mature during the ____ period.

Some epiblast cells migrate and emerge between the epiblast and endoderm as a new germ layer called the

The prenatal period during which the major organ systems form is the

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints 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-Based Balance

Reproductive System

Filters

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

Germ layers form during the period while organ systems mature during the period.