Question 1

The almost identical cells produced by cleavage divisions are called ________.

Accepted Answer

The answer of The almost identical cells produced by cleavage...

Question 2

Genes that appear on the X chromosome are said to be ________.

Accepted Answer

The answer of Genes that appear on the X chromosome...

Question 3

The inner cell mass of the blastocyst will

Accepted Answer

A)  form the placenta. 
B)  form the morula. 
C)  form the embryo. 
D)  form blood vessels of the placenta. 
E)  provide nutrients for early growth. 
A)  form the placenta. 
B)  form the morula. 
C)  form the embryo. 
D)  form blood vessels of the placenta. 
E)  provide nutrients for early growth.

Question 4

All of the following occur during pregnancy, except that

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 5

During gastrulation,

Accepted Answer

A)  the blastomeres fuse. 
B)  the placenta penetrates the endometrium. 
C)  three germ layers are formed. 
D)  cells from the hypoblast move to the epiblast. 
E)  the neural tube closes. 
A)  the blastomeres fuse. 
B)  the placenta penetrates the endometrium. 
C)  three germ layers are formed. 
D)  cells from the hypoblast move to the epiblast. 
E)  the neural tube closes.

Question 6

The traits of an individual controlled by his or her genotype are his or her ________.

Accepted Answer

The answer of The traits of an individual controlled by...

Question 7

The extraembryonic membrane that forms the fetal portion of the placenta is the

Accepted Answer

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

Question 8

The extraembryonic membrane that forms a fluid-filled sac is the

Accepted Answer

A)  yolk sac. 
B)  amnion. 
C)  allantois. 
D)  all of the above 
E)  none of the above 
A)  yolk sac. 
B)  amnion. 
C)  allantois. 
D)  all of the above 
E)  none of the above

Question 9

During gestation, contraction of the myometrium is inhibited by ________, produced by the placenta.

Accepted Answer

A)  progesterone 
B)  estrogen 
C)  oxytocin 
D)  prostaglandins 
E)  inhibin 
A)  progesterone 
B)  estrogen 
C)  oxytocin 
D)  prostaglandins 
E)  inhibin

Question 10

A new mother tells you that when she nurses her baby, she feels as if she is having menstrual cramps. How would you explain this phenomenon?

Accepted Answer

During nursing, the mechanical stimulus

Question 11

Figure 26-1 Early Human Development
Use Figure 26-1 to answer the following questions:
-Identify the structures labeled "4."

Accepted Answer

A)  zygotic twins 
B)  morula 
C)  blastomere 
D)  trophoblast 
E)  polar bodies 
A)  zygotic twins 
B)  morula 
C)  blastomere 
D)  trophoblast 
E)  polar bodies

Question 12

The hormone that increases the flexibility of the pubic symphysis during pregnancy is

Accepted Answer

A)  luteinizing hormone. 
B)  progesterone. 
C)  human chorionic gonadotropin. 
D)  human placental lactogen. 
E)  relaxin. 
A)  luteinizing hormone. 
B)  progesterone. 
C)  human chorionic gonadotropin. 
D)  human placental lactogen. 
E)  relaxin.

Question 13

Which of the following is not part of fertilization?

Accepted Answer

A)  release of acrosomal enzymes 
B)  oocyte activation 
C)  completion of Meiosis II 
D)  amphimixis 
E)  completion of Meiosis I 
A)  release of acrosomal enzymes 
B)  oocyte activation 
C)  completion of Meiosis II 
D)  amphimixis 
E)  completion of Meiosis I

Question 14

Stretching of the cervix causes an increase in the blood levels of

Accepted Answer

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

Question 15

Progesterone calms the myometrium and prevents contraction. What factors antagonize progesterone and trigger labor and delivery?

Accepted Answer

A)  rising estrogen levels increase sensitivity 
B)  rising oxytocin levels lead to uterine contractions 
C)  distortion of the myometrium 
D)  distortion of the cervix 
E)  all of the above 
A)  rising estrogen levels increase sensitivity 
B)  rising oxytocin levels lead to uterine contractions 
C)  distortion of the myometrium 
D)  distortion of the cervix 
E)  all of the above

Question 16

The trophoblast has many of the characteristics of ________ cells.

Accepted Answer

A)  cardiac 
B)  cancer 
C)  infectious 
D)  rejuvenating 
E)  none of the above 
A)  cardiac 
B)  cancer 
C)  infectious 
D)  rejuvenating 
E)  none of the above

Question 17

Figure 26-2 Fetus at 10 Weeks
Use Figure 26-2 to answer the following questions:
-Identify the structure labeled "5."

Accepted Answer

A)  amniotic cavity 
B)  chorion 
C)  amnion 
D)  placenta 
E)  endometrium 
A)  amniotic cavity 
B)  chorion 
C)  amnion 
D)  placenta 
E)  endometrium

Question 18

Figure 26-2 Fetus at 10 Weeks
Use Figure 26-2 to answer the following questions:
-Identify the structure labeled "7."

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 19

The oval, three-layered sheet produced by gastrulation is called the ________.

Accepted Answer

A)  embryo 
B)  ectoderm 
C)  inner cell mass 
D)  embryonic disc 
E)  yolk sac 
A)  embryo 
B)  ectoderm 
C)  inner cell mass 
D)  embryonic disc 
E)  yolk sac

Question 20

Each of the following statements concerning development is True , except that

Accepted Answer

A)  embryological development includes the events that occur in the first two months. 
B)  fetal development occurs from the 9ᵗʰ week until birth. 
C)  the first trimester is when the fetus looks distinctively human. 
D)  postnatal development begins at birth. 
E)  All of the above are True of development. 
A)  embryological development includes the events that occur in the first two months. 
B)  fetal development occurs from the 9ᵗʰ week until birth. 
C)  the first trimester is when the fetus looks distinctively human. 
D)  postnatal development begins at birth. 
E)  All of the above are True of development.

Exam 26: Development and Inheritance

The almost identical cells produced by cleavage divisions are called ________.

Genes that appear on the X chromosome are said to be ________.

The inner cell mass of the blastocyst will

All of the following occur during pregnancy, except that

During gastrulation,

The traits of an individual controlled by his or her genotype are his or her ________.

The extraembryonic membrane that forms the fetal portion of the placenta is the

The extraembryonic membrane that forms a fluid-filled sac is the

During gestation, contraction of the myometrium is inhibited by ________, produced by the placenta.

A new mother tells you that when she nurses her baby, she feels as if she is having menstrual cramps. How would you explain this phenomenon?

Figure 26-1 Early Human Development Use Figure 26-1 to answer the following questions: -Identify the structures labeled "4."

The hormone that increases the flexibility of the pubic symphysis during pregnancy is

Which of the following is not part of fertilization?

Stretching of the cervix causes an increase in the blood levels of

Progesterone calms the myometrium and prevents contraction. What factors antagonize progesterone and trigger labor and delivery?

The trophoblast has many of the characteristics of ________ cells.

Figure 26-2 Fetus at 10 Weeks Use Figure 26-2 to answer the following questions: -Identify the structure labeled "5."

Figure 26-2 Fetus at 10 Weeks Use Figure 26-2 to answer the following questions: -Identify the structure labeled "7."

The oval, three-layered sheet produced by gastrulation is called the ________.

Each of the following statements concerning development is True , except that

An Introduction to Anatomy and Physiology

Chemical Level of Organization

Cellular Level of Organization

Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Skeleton

Articulations

Skeletal Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, Spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood and Blood Vessels

The Heart and Cardiovascular Function

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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