Question 1

Describe what occurs during cleavage,growth,morphogenesis,and differentiation.

Accepted Answer

Cleavage is the division of the zygote f...

Question 2

The _______ is the first embryonic membrane to appear,and it is the first site of ___________.

Accepted Answer

A)  amnion,umbilical cord formation
B)  yolk sac,placenta development
C)  chorion,neural system development
D)  allantois,amniotic fluid formation
E)  yolk sac,blood cell formationF) B) and C)
G) A) and E)

Question 3

The 4 cell stage of development is almost twice the size of the 2 cell stage of development.

Accepted Answer

A) True 
 B)False

Question 4

Why would you predict that the blood carbon dioxide levels in a pregnant woman would fall?

Accepted Answer

A)  She has trouble breathing due to the expanding uterus.
B)  The fetus is removing carbon dioxide from her blood.
C)  The maternal oxygen levels are also falling.
D)  Pregnancy creates a favorable concentration gradient between the fetal and maternal blooD.
E)  The bronchial tubes relax.F) B) and D)
G) A) and E)

Question 5

Which of the following does not occur prior to or during stage 1 of labor?

Accepted Answer

A)  bloody show
B)  effacement
C)  uterine contractions
D)  breaking water
E)  dislodging of the placentaF) A) and E)
G) A) and B)

Question 6

Which of the following is not derived from the endoderm?

Accepted Answer

A)  epithelial lining of digestive tract
B)  epithelial lining of respiratory tract
C)  glands of the digestive tract
D)  lining of the urinary bladder
E)  urinary systemF) B) and D)
G) A) and D)

Question 7

The nervous system develops enough to permit reflex actions during which period of development?

Accepted Answer

A)  pre-embryonic
B)  embryonic,weeks 6 - 8
C)  fetal,months 3 - 4
D)  embryonic,weeks 2 - 3
E)  embryonic,weeks 4 - 5F) B) and E)
G) B) and C)

Question 8

The first system in the body to become visibly differentiated during development is the

Accepted Answer

A)  digestive system.
B)  cardiovascular system.
C)  respiratory system.
D)  nervous system.
E)  reproductive system.F) A) and E)
G) B) and C)

Question 9

The sex of an individual is determined at the moment of fertilization.

Accepted Answer

A) True 
 B)False

Question 10

How do males and females differ as they age?

Accepted Answer

A)  Females undergo menopause but males do not undergo any changes in their reproductive hormone levels.
B)  Males can continue to produce sperm until death but females do not continue to produce eggs.
C)  Males develop urinary incontinence but females do not.
D)  Males lose skeletal muscle mass but females tend to gain muscle mass.
E)  Females dehydrate faster than males do.F) A) and B)
G) A) and C)

Question 11

Which of the following is not associated with the egg?

Accepted Answer

A)  corona radiata
B)  acrosome
C)  zona pellucida
D)  cortical granule
E)  fertilization membraneF) C) and D)
G) A) and E)

Question 12

Does a woman ovulate during pregnancy? Why or why not?

Accepted Answer

A)  No.She has no more follicles in the ovaries.
B)  No,because negative feedback on the hypothalamus prevents new follicles from maturing.
C)  No,because the developing embryo prevents any new blastulas from implanting.
D)  Yes,because the uterine cycle continues to function.
E)  Yes,because the ovarian cycle continues to function.F) A) and E)
G) A) and D)

Question 13

The adhering follicular cells that surround the egg are called the

Accepted Answer

A)  pronuclei.
B)  zona pellucida.
C)  corona radiata.
D)  cortical granule cells.
E)  outer cell mass.F) B) and E)
G) B) and C)

Question 14

When cells take on specific structure and function,this is called

Accepted Answer

A)  cleavage.
B)  growth.
C)  morphogenesis.
D)  differentiation.
E)  fertilization.F) D) and E)
G) All of the above

Question 15

Once the cortical granules release their enzymes,the corona radiata becomes the fertilization membrane.

Accepted Answer

A) True 
 B)False

Question 16

When the uterus begins to contract,it is almost time for the baby to be born.

Accepted Answer

A) True 
 B)False

Question 17

The blood of the mother and the fetus mix in the placenta.

Accepted Answer

A) True 
 B)False

Question 18

The yolk sac of the chick provides nutrients to the developing embryo.What structure serves the same role in humans?

Accepted Answer

A)  chorion
B)  allantois
C)  yolk sac
D)  amnion
E)  zona pellucidaF) A) and B)
G) A) and D)

Question 19

How are the pulmonary veins and the umbilical veins similar?

Accepted Answer

A)  They are both present in an adult human.
B)  They both carry blood to the lungs.
C)  They both connect to the superior vena cava.
D)  They both carry oxygen-rich blooD.
E)  They both connect to the placenta.F) B) and C)
G) B) and D)

Question 20

Which of the following develops into the male genital ducts?

Accepted Answer

A)  epididymis
B)  urogenital groove
C)  cloaca
D)  Mullerian ducts
E)  Wolffian ductsF) A) and E)
G) B) and D)

Exam 18: Development and Aging

The first system in the body to become visibly differentiated during development is the

Correct AnswerverifiedShow Answer

Which of the following does not occur prior to or during stage 1 of labor?

Correct AnswerverifiedShow Answer

The yolk sac of the chick provides nutrients to the developing embryo.What structure serves the same role in humans?

Correct AnswerverifiedShow Answer

Does a woman ovulate during pregnancy? Why or why not?

Correct AnswerverifiedShow Answer

How are the pulmonary veins and the umbilical veins similar?

Correct AnswerverifiedShow Answer

Once the cortical granules release their enzymes,the corona radiata becomes the fertilization membrane.

Correct AnswerverifiedShow Answer

The _______ is the first embryonic membrane to appear,and it is the first site of ___________.

Correct AnswerverifiedShow Answer

The adhering follicular cells that surround the egg are called the

Correct AnswerverifiedShow Answer

The sex of an individual is determined at the moment of fertilization.

Correct AnswerverifiedShow Answer

When the uterus begins to contract,it is almost time for the baby to be born.

Correct AnswerverifiedShow Answer

Which of the following develops into the male genital ducts?

Correct AnswerverifiedShow Answer

The nervous system develops enough to permit reflex actions during which period of development?

Correct AnswerverifiedShow Answer

The blood of the mother and the fetus mix in the placenta.

Correct AnswerverifiedShow Answer

Describe what occurs during cleavage,growth,morphogenesis,and differentiation.

Correct AnswerverifiedCleavage is the division of the zygote f...View AnswerShow Answer

Which of the following is not derived from the endoderm?

Correct AnswerverifiedShow Answer

When cells take on specific structure and function,this is called

Correct AnswerverifiedShow Answer

Which of the following is not associated with the egg?

Correct AnswerverifiedShow Answer

The 4 cell stage of development is almost twice the size of the 2 cell stage of development.

Correct AnswerverifiedShow Answer

How do males and females differ as they age?

Correct AnswerverifiedShow Answer

Why would you predict that the blood carbon dioxide levels in a pregnant woman would fall?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The _ is the first embryonic membrane to appear,and it is the first site of _____.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Cleavage is the division of the zygote f...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified