Question 1

The stage of labor during which the amniotic sac ruptures is the:

Accepted Answer

A) first stage 
B) second stage 
C) third stage 
D) fourth stage 
A) first stage 
B) second stage 
C) third stage 
D) fourth stage

Question 2

After birth, the fetal foramen ovale is ____ in order to ____ pulmonary circulation.

Accepted Answer

A) closed/decrease 
B) opened/increase 
C) opened/decrease 
D) closed/increase 
A) closed/decrease 
B) opened/increase 
C) opened/decrease 
D) closed/increase

Question 3

The placental hormone that maintains the corpus luteum during early pregnancy is ____________________.

Accepted Answer

The answer of The placental hormone that maintains the corpus...

Question 4

In the embryo, the epidermis and nervous system are derived from the ____________________.

Accepted Answer

The answer of In the embryo, the epidermis and nervous...

Question 5

Just before birth, all of the fetus's organ systems are functioning except the ____________________ system.

Accepted Answer

The answer of Just before birth, all of the fetus's...

Question 6

The function of the hormone hCG is to:

Accepted Answer

A) inhibit the anterior pituitary gland 
B) promote rapid growth of the embryo 
C) stop the secretion of FSH and LH during pregnancy 
D) stimulate the corpus luteum to secrete estrogen and progesterone 
A) inhibit the anterior pituitary gland 
B) promote rapid growth of the embryo 
C) stop the secretion of FSH and LH during pregnancy 
D) stimulate the corpus luteum to secrete estrogen and progesterone

Question 7

A few moments after birth, the baby's ____________________ system begins functioning because the ____________________ have inflated.

Accepted Answer

respirator

Question 8

The sex chromosomes in ____________________ are called XX, and in ____________________ are called XY.

Accepted Answer

women, men

Question 9

The embryonic membrane that forms the fetal part of the placenta is the ____________________.

Accepted Answer

The answer of The embryonic membrane that forms the fetal...

Question 10

In order for a recessive trait to appear in the phenotype:

Accepted Answer

A) no genes for it can be present 
B) two genes for it must be present 
C) only one gene for it has to be present 
D) one or two genes for it must be present 
A) no genes for it can be present 
B) two genes for it must be present 
C) only one gene for it has to be present 
D) one or two genes for it must be present

Question 11

During pregnancy, an important function of progesterone is to inhibit contractions of the ____________________ of the uterus.

Accepted Answer

The answer of During pregnancy, an important function of progesterone...

Question 12

A trait that is ____________________ requires two genes for its expression, and a trait that is ____________________ requires only one gene for its expression.

Accepted Answer

recessive,

Question 13

Which statement is NOT true of the embryonic membranes?

Accepted Answer

A) The amnion contains fluid to cushion the embryo. 
B) The chorion is the outermost of the membranes. 
C) The yolk sac will provide nourishment for the early embryo. 
D) The yolk sac forms the first blood cells. 
A) The amnion contains fluid to cushion the embryo. 
B) The chorion is the outermost of the membranes. 
C) The yolk sac will provide nourishment for the early embryo. 
D) The yolk sac forms the first blood cells.

Question 14

Which of the following statements are true of labor and delivery? (Read carefully and select all of the correct statements.)

Accepted Answer

A) The hormone oxytocin from the anterior pituitary promotes strong contractions of the myometrium. 
B) The uterine cervix dilates during the first stage of labor. 
C) The amniotic sac ruptures during the second stage of labor. 
D) If the fetus is positioned sideways, the third stage of labor will be prolonged. 
E) The placenta is delivered soon after the delivery of the infant.
F)Decreasing progesterone at the end of gestation increases the contractility of the myometrium. 
A) The hormone oxytocin from the anterior pituitary promotes strong contractions of the myometrium. 
B) The uterine cervix dilates during the first stage of labor. 
C) The amniotic sac ruptures during the second stage of labor. 
D) If the fetus is positioned sideways, the third stage of labor will be prolonged. 
E) The placenta is delivered soon after the delivery of the infant.
F)Decreasing progesterone at the end of gestation increases the contractility of the myometrium.

Question 15

Mom and Dad have two sons and two daughters. One son is red-green color-blind. What does this tell us about Mom and Dad?

Accepted Answer

A) Dad must be color-blind, because a son gets that gene from his father. 
B) Mom must be color-blind and passed two recessive genes to her son. 
C) Dad must be a carrier and passed the gene to his son. 
D) Mom must be a carrier and passed the gene to her son. 
A) Dad must be color-blind, because a son gets that gene from his father. 
B) Mom must be color-blind and passed two recessive genes to her son. 
C) Dad must be a carrier and passed the gene to his son. 
D) Mom must be a carrier and passed the gene to her son.

Question 16

The stage of labor during which the cervix begins to dilate is the:

Accepted Answer

A) first stage 
B) second stage 
C) third stage 
D) fourth stage 
A) first stage 
B) second stage 
C) third stage 
D) fourth stage

Question 17

Blood is carried from the placenta to the fetus by the ____________________, and this blood has high levels of the gas ____________________.

Accepted Answer

umbilical

Question 18

Genetics problem: Dad is red-green color-blind, and Mom is not a carrier. The percent chance that a son will be color-blind is ____________________ and that a daughter will be a carrier is ____________________.

Accepted Answer

The answer of Genetics problem: Dad is red-green color-blind, and...

Question 19

In the embryo, the three germ layers, or primary layers, are the ____________________, ____________________, and ____________________.

Accepted Answer

ectoderm, mesoderm, endoderm
ectoderm, e

Question 20

For the embryo, the yolk sac:

Accepted Answer

A) provides a cushion 
B) forms the first blood cells 
C) provides nourishment 
D) forms the fetal portion of the placenta 
A) provides a cushion 
B) forms the first blood cells 
C) provides nourishment 
D) forms the fetal portion of the placenta

Exam 21: Human Development and Genetics

The stage of labor during which the amniotic sac ruptures is the:

After birth, the fetal foramen ovale is ____ in order to ____ pulmonary circulation.

The placental hormone that maintains the corpus luteum during early pregnancy is ____________________.

In the embryo, the epidermis and nervous system are derived from the ____________________.

Just before birth, all of the fetus's organ systems are functioning except the ____________________ system.

The function of the hormone hCG is to:

A few moments after birth, the baby's ____________________ system begins functioning because the ____________________ have inflated.

The sex chromosomes in ____________________ are called XX, and in ____________________ are called XY.

The embryonic membrane that forms the fetal part of the placenta is the ____________________.

In order for a recessive trait to appear in the phenotype:

During pregnancy, an important function of progesterone is to inhibit contractions of the ____________________ of the uterus.

A trait that is ____________________ requires two genes for its expression, and a trait that is ____________________ requires only one gene for its expression.

Which statement is NOT true of the embryonic membranes?

Which of the following statements are true of labor and delivery? (Read carefully and select all of the correct statements.)

Mom and Dad have two sons and two daughters. One son is red-green color-blind. What does this tell us about Mom and Dad?

The stage of labor during which the cervix begins to dilate is the:

Blood is carried from the placenta to the fetus by the ____________________, and this blood has high levels of the gas ____________________.

Genetics problem: Dad is red-green color-blind, and Mom is not a carrier. The percent chance that a son will be color-blind is ____________________ and that a daughter will be a carrier is ____________________.

In the embryo, the three germ layers, or primary layers, are the ____________________, ____________________, and ____________________.

For the embryo, the yolk sac:

Organization and General Plan of the Body

Some Basic Chemistry

Cells

Tissues and Membranes

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The Senses

The Endocrine System

Blood

The Heart

The Vascular System

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Body Temperature and Metabolism

The Urinary System

Fluidelectrolyte and Acidbase Balance

The Reproductive Systems

An Introduction to Microbiology and Human Disease

Filters

After birth, the fetal foramen ovale is in order to pulmonary circulation.

A few moments after birth, the baby's system begins functioning because the have inflated.

The sex chromosomes in are called XX, and in are called XY.

A trait that is requires two genes for its expression, and a trait that is requires only one gene for its expression.

Blood is carried from the placenta to the fetus by the , and this blood has high levels of the gas .

Genetics problem: Dad is red-green color-blind, and Mom is not a carrier. The percent chance that a son will be color-blind is and that a daughter will be a carrier is .

In the embryo, the three germ layers, or primary layers, are the , , and .