Question 1

Chromosome pairs are called

Accepted Answer

A) karyotypes. 
B) genomes. 
C) homologous pairs. 
D) loci. 
E) haploid. 
A) karyotypes. 
B) genomes. 
C) homologous pairs. 
D) loci. 
E) haploid.

Question 2

The testes leave the abdominal cavity and reach the scrotum by passing through the

Accepted Answer

A) urogenital opening. 
B) inguinal canal. 
C) cloaca. 
D) urethra. 
E) Wolffian ducts. 
A) urogenital opening. 
B) inguinal canal. 
C) cloaca. 
D) urethra. 
E) Wolffian ducts.

Question 3

Which of the following is involved in stimulating milk letdown?

Accepted Answer

A) increased estrogen levels 
B) increased progesterone levels 
C) mechanical stimulation of the breasts that cause release of oxytocin 
D) secretion of a small amount of milk 
E) None of these choices is correct 
A) increased estrogen levels 
B) increased progesterone levels 
C) mechanical stimulation of the breasts that cause release of oxytocin 
D) secretion of a small amount of milk 
E) None of these choices is correct

Question 4

Chromosomes that are NOT associated with sex determination are known as

Accepted Answer

A) structural genes. 
B) autosomes. 
C) genotypes. 
D) polygenic. 
E) y-linked. 
A) structural genes. 
B) autosomes. 
C) genotypes. 
D) polygenic. 
E) y-linked.

Question 5

The lungs develop from

Accepted Answer

A) somitomeres. 
B) neural crest cells. 
C) an evagination from the foregut. 
D) an evagination from the floor of the diencephalon. 
E) an invagination from the hindgut. 
A) somitomeres. 
B) neural crest cells. 
C) an evagination from the foregut. 
D) an evagination from the floor of the diencephalon. 
E) an invagination from the hindgut.

Question 6

Which germ layer is the brain and spinal cord derived from?

Accepted Answer

A) ectoderm 
B) mesoderm 
C) endoderm 
A) ectoderm 
B) mesoderm 
C) endoderm

Question 7

The stage of labor in which the fetus is expelled is

Accepted Answer

A) the first stage. 
B) the second stage. 
C) the third stage. 
D) the fourth stage. 
E) the fifth stage. 
A) the first stage. 
B) the second stage. 
C) the third stage. 
D) the fourth stage. 
E) the fifth stage.

Question 8

What genetic disorder is caused by having three chromosomes 21?

Accepted Answer

A) albinism 
B) sickle-cell disease 
C) hemophilia 
D) Down syndrome 
E) achondroplasia 
A) albinism 
B) sickle-cell disease 
C) hemophilia 
D) Down syndrome 
E) achondroplasia

Question 9

The opening that connects the right and left atria in the fetal heart is the

Accepted Answer

A) interatrial septum. 
B) septum primum. 
C) septum secundum. 
D) foramen ovale. 
E) foramen rotundum. 
A) interatrial septum. 
B) septum primum. 
C) septum secundum. 
D) foramen ovale. 
E) foramen rotundum.

Question 10

An embryonic cell that contains the potential to give rise to any tissue type 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 11

Fusion of the male and female pronuclei

Accepted Answer

A) results in an oocyte forming. 
B) restores the diploid number of chromosomes. 
C) occurs before ovulation. 
D) results in a haploid cell forming. 
E) results in a total of 23 chromosomes. 
A) results in an oocyte forming. 
B) restores the diploid number of chromosomes. 
C) occurs before ovulation. 
D) results in a haploid cell forming. 
E) results in a total of 23 chromosomes.

Question 12

Which germ layer is tooth enamel derived from?

Accepted Answer

A) ectoderm 
B) mesoderm 
C) endoderm 
A) ectoderm 
B) mesoderm 
C) endoderm

Question 13

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 14

As parturition nears,the levels of progesterone ______ and the levels of estrogen ______.

Accepted Answer

A) decrease; increase 
B) increase; decrease 
C) decrease; decrease 
D) increase; increase 
A) decrease; increase 
B) increase; decrease 
C) decrease; decrease 
D) increase; increase

Question 15

The inclusion of ______________ in a woman's diet during the early stages of her pregnancy significantly reduces the risk for neural tube defects in her developing embryo.

Accepted Answer

A) Vitamin E 
B) Vitamin D 
C) Vitamin A 
D) Folic acid 
E) Calcium 
A) Vitamin E 
B) Vitamin D 
C) Vitamin A 
D) Folic acid 
E) Calcium

Question 16

The earliest period of prenatal development is the _________ period.

Accepted Answer

A) embryonic 
B) neonatal 
C) germinal 
D) infant 
E) fetal 
A) embryonic 
B) neonatal 
C) germinal 
D) infant 
E) fetal

Question 17

Which of the following is NOT a possible route for neural crest cells?

Accepted Answer

A) melanocytes 
B) autonomic ganglion neurons 
C) adrenal cortex 
D) sensory ganglia 
E) enteric nervous system neurons 
A) melanocytes 
B) autonomic ganglion neurons 
C) adrenal cortex 
D) sensory ganglia 
E) enteric nervous system neurons

Question 18

In males,the urogenital folds close over the urogenital opening and urethral groove to form the

Accepted Answer

A) scrotum. 
B) testes. 
C) vas deferens. 
D) penis. 
E) prostate gland. 
A) scrotum. 
B) testes. 
C) vas deferens. 
D) penis. 
E) prostate gland.

Question 19

The pleural and peritoneal cavities of the adult begin as part of the _____ cavity.

Accepted Answer

A) cloacal 
B) somatomeric 
C) coelomic 
D) apical 
E) ventral 
A) cloacal 
B) somatomeric 
C) coelomic 
D) apical 
E) ventral

Question 20

Arm and legs buds appear at about 28 days from

Accepted Answer

A) the coelom. 
B) apical ectodermal ridges. 
C) somitomeres. 
D) neural crest cells. 
A) the coelom. 
B) apical ectodermal ridges. 
C) somitomeres. 
D) neural crest cells.

Exam 29: Development,growth,aging,and Genetics

Chromosome pairs are called

The testes leave the abdominal cavity and reach the scrotum by passing through the

Which of the following is involved in stimulating milk letdown?

Chromosomes that are NOT associated with sex determination are known as

The lungs develop from

Which germ layer is the brain and spinal cord derived from?

The stage of labor in which the fetus is expelled is

What genetic disorder is caused by having three chromosomes 21?

The opening that connects the right and left atria in the fetal heart is the

An embryonic cell that contains the potential to give rise to any tissue type is called a/an

Fusion of the male and female pronuclei

Which germ layer is tooth enamel derived from?

Which of the following genotypes will result in a male?

As parturition nears,the levels of progesterone ______ and the levels of estrogen ______.

The inclusion of ______________ in a woman's diet during the early stages of her pregnancy significantly reduces the risk for neural tube defects in her developing embryo.

The earliest period of prenatal development is the _________ period.

Which of the following is NOT a possible route for neural crest cells?

In males,the urogenital folds close over the urogenital opening and urethral groove to form the

The pleural and peritoneal cavities of the adult begin as part of the _____ cavity.

Arm and legs buds appear at about 28 days from

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

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As parturition nears,the levels of progesterone and the levels of estrogen .