Question 1

Where are the mitochondria located in the sperm?

Accepted Answer

A) tail 
B) middle piece 
C) head 
D) nucleus 
E) cell membrane 
A) tail 
B) middle piece 
C) head 
D) nucleus 
E) cell membrane B

Question 2

The white,greasy,cheeselike substance that covers the skin is called

Accepted Answer

A) lanugo. 
B) fontanels. 
C) vernix caseosa. 
D) foramen ovale. 
E) ductus arteriosus. 
A) lanugo. 
B) fontanels. 
C) vernix caseosa. 
D) foramen ovale. 
E) ductus arteriosus. C

Question 3

Which of the following problems is not associated with pregnancy?

Accepted Answer

A) lordosis 
B) lower back pain 
C) gastrointestinal reflux 
D) incontinence 
E) impotence 
A) lordosis 
B) lower back pain 
C) gastrointestinal reflux 
D) incontinence 
E) impotence E

Question 4

The embryonic disk becomes the inner cell mass after gastrulation.

Accepted Answer

A) True 
 B)False

Question 5

At the end of the embryonic period,the embryo is about 12 inches long.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following statements is related to a decrease in blood flow?

Accepted Answer

A) More neural cells are lost as we age. 
B) Females undergo menopause. 
C) Ventilation of the lungs is reduced. 
D) The liver does not metabolize drugs as efficiently as before. 
E) The homeostatic adjustment to heat is limited. 
A) More neural cells are lost as we age. 
B) Females undergo menopause. 
C) Ventilation of the lungs is reduced. 
D) The liver does not metabolize drugs as efficiently as before. 
E) The homeostatic adjustment to heat is limited.

Question 7

Which of the following is present in the fetus but not in an adult human?

Accepted Answer

A) ductus arteriosus 
B) pulmonary vein 
C) left atrium 
D) superior vena cava 
E) internal iliac artery 
A) ductus arteriosus 
B) pulmonary vein 
C) left atrium 
D) superior vena cava 
E) internal iliac artery

Question 8

Which of these is associated with pre-embryonic development?

Accepted Answer

A) morula 
B) embryonic disk 
C) gastrulation 
D) primary germ layers 
E) formation of the umbilical cord 
A) morula 
B) embryonic disk 
C) gastrulation 
D) primary germ layers 
E) formation of the umbilical cord

Question 9

What structure produces progesterone and estrogen during pregnancy?

Accepted Answer

A) placenta 
B) hypothalamus 
C) anterior pituitary 
D) posterior pituitary 
E) ovaries 
A) placenta 
B) hypothalamus 
C) anterior pituitary 
D) posterior pituitary 
E) ovaries

Question 10

Which of the following occurs during the embryonic stage of development?

Accepted Answer

A) Chorion appears. 
B) Nose,eyes,and ear become noticeable. 
C) Testes descend into scrotum. 
D) Heartbeat can be hearD. 
E) Fingernails appear. 
A) Chorion appears. 
B) Nose,eyes,and ear become noticeable. 
C) Testes descend into scrotum. 
D) Heartbeat can be hearD. 
E) Fingernails appear.

Question 11

Fetal development includes the third through ninth months of development.

Accepted Answer

A) True 
 B)False

Question 12

Describe the steps in fertilization of an egg cell.

Accepted Answer

1.Sperm makes its way through the corona

Question 13

When does the mother first begin to feel the fetus move?

Accepted Answer

A) 1-2 months 
B) 3-4 months 
C) 5-7 months 
D) 7-9 months 
E) weeks 1-4 
A) 1-2 months 
B) 3-4 months 
C) 5-7 months 
D) 7-9 months 
E) weeks 1-4

Question 14

At what point during development does the embryo form three germ layers?

Accepted Answer

A) when it begins cleavage 
B) when the nervous system develops 
C) when it forms the gastrula 
D) when it forms the inner cell mass 
E) when it becomes recognizable as human 
A) when it begins cleavage 
B) when the nervous system develops 
C) when it forms the gastrula 
D) when it forms the inner cell mass 
E) when it becomes recognizable as human

Question 15

Which of the following gives the correct order of layers the sperm crosses when entering the egg?

Accepted Answer

A) corona radiata,zona pellucida,oocyte plasma membrane 
B) zona pellucida,oocyte plasma membrane,corona radiata 
C) oocyte plasma membrane,corona radiata,zona pellucida 
D) corona radiata,oocyyte plasma membrane,zona pellucida 
E) zona pellucida,corona radiata,oocyte plasma membrane 
A) corona radiata,zona pellucida,oocyte plasma membrane 
B) zona pellucida,oocyte plasma membrane,corona radiata 
C) oocyte plasma membrane,corona radiata,zona pellucida 
D) corona radiata,oocyyte plasma membrane,zona pellucida 
E) zona pellucida,corona radiata,oocyte plasma membrane

Question 16

Which hypothesis of aging involves mitochondria?

Accepted Answer

A) genetic in origin 
B) whole-body process 
C) extrinsic factors 
D) damage accumulation 
E) external factors 
A) genetic in origin 
B) whole-body process 
C) extrinsic factors 
D) damage accumulation 
E) external factors

Question 17

Most birth defects are due to the inheritance of an abnormal number of chromosomes.

Accepted Answer

A) True 
 B)False

Question 18

Embryonic development begins with

Accepted Answer

A) fertilization. 
B) the first cell division. 
C) the development of the blastocyst. 
D) implantation. 
E) gastrulation. 
A) fertilization. 
B) the first cell division. 
C) the development of the blastocyst. 
D) implantation. 
E) gastrulation.

Question 19

Which of the following skin changes is not associated with growing older?

Accepted Answer

A) Pigmented blotches appear on the skin. 
B) There is less adipose tissue in the subcutaneous layer. 
C) The number of elastic fibers decreases. 
D) There is an increase in the number of oil glands. 
E) There are fewer sweat glands for sweating to occur. 
A) Pigmented blotches appear on the skin. 
B) There is less adipose tissue in the subcutaneous layer. 
C) The number of elastic fibers decreases. 
D) There is an increase in the number of oil glands. 
E) There are fewer sweat glands for sweating to occur.

Question 20

Which of the following would be considered a poor health practice for a woman planning to get pregnant or already pregnant?

Accepted Answer

A) updating all vaccinations 
B) treating all sexually transmitted diseases 
C) obtaining more folic acid 
D) eating enough to feed two people 
E) moderate exercise 
A) updating all vaccinations 
B) treating all sexually transmitted diseases 
C) obtaining more folic acid 
D) eating enough to feed two people 
E) moderate exercise

Exam 18: Development and Aging

Where are the mitochondria located in the sperm?

The white,greasy,cheeselike substance that covers the skin is called

Which of the following problems is not associated with pregnancy?

The embryonic disk becomes the inner cell mass after gastrulation.

At the end of the embryonic period,the embryo is about 12 inches long.

Which of the following statements is related to a decrease in blood flow?

Which of the following is present in the fetus but not in an adult human?

Which of these is associated with pre-embryonic development?

What structure produces progesterone and estrogen during pregnancy?

Which of the following occurs during the embryonic stage of development?

Fetal development includes the third through ninth months of development.

Describe the steps in fertilization of an egg cell.

When does the mother first begin to feel the fetus move?

At what point during development does the embryo form three germ layers?

Which of the following gives the correct order of layers the sperm crosses when entering the egg?

Which hypothesis of aging involves mitochondria?

Most birth defects are due to the inheritance of an abnormal number of chromosomes.

Embryonic development begins with

Which of the following skin changes is not associated with growing older?

Which of the following would be considered a poor health practice for a woman planning to get pregnant or already pregnant?

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