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Human Anatomy and Physiology Chapter 29 Practice Questions and Answers

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Human Anatomy and Physiology (Biol 235)

Chapter 29 Practice Questions And Answers

Questions

1) Fertilization normally occurs within which structure?
a) Ovary
b) Fallopian tube
c) Ovarian ligament
d) Body of uterus
e) Vagina

2) Which of the following is a series of functional changes that sperm go through when they are
in the female reproductive tract?
a) Acrosomal reaction
b) Maturation
c) Fertilization
d) Capacitation
e) Polyspermy

3) The fusion of the male pronucleus and the female pronucleus results in which developmental
stage?
a) Female pronucleus
b) Male pronucleus
c) Zygote
d) Blastomeres
e) Morula

4) Which of the following is the part of the blastocyst that promotes implantation and produces
hCG?
a) Blastocyte
b) Blastosphere
c) Trophoblast
d) Blastocyst cavity
e) Uterine cavity

5) Which of the following is the portion of the endometrium that lies between the embryo and
the stratum basalis?
a) Decidua basalis
b) Decidua capsularis
c) Decidua parietalis
d) Lamina propria
e) Adventitia

6) Which of the following develops from the epiblast and carries a protective fluid?
a) Cytotrophoblast
b) Yolk sac
c) Exocoelomic membrane
d) Amnion
e) Lacunae

7) Which of the following will become the primary structure for exchange of material between
the mother and the fetus?
a) Chorionic villi of the placenta
b) Amnion
c) Amnionic fluid
d) Embryonic disc
e) Endoderm

8) Each somite may differentiate into a
a) Sertoli cell
b) Dermatome
c) Ovary
d) Myogenic cells
e) Ductus deferens

9) Which of the following is the connection between the placenta and the embryo?
a) Amnion
b) Chorion
c) Umbilical cord
d) Placenta
e) Capillary beds

10) How many pairs of pharyngeal arches are there?
a) 2
b) 3
c) 4
d) 5
e) 6

11) Which of the following is an agent or influence that causes developmental defects in an
embryo?
a) Carcinogen
b) Toxin
c) Nicotine
d) Radiation
e) Teratogen

12) What exam is performed between 14-16 weeks gestation and is used to detect genetic
abnormalities?
a) Sonogram
b) Amniocentesis
c) CVS
d) AFP test
e) CBC

13) CVS is taking cells from where?
a) Amnion
b) Chorion
c) Placenta
d) Umbilical cord
e) Uterus

14) Which hormone is secreted by nonpregnant women from neurosecretory cells in the
hypothalamus?
a) GnRH
b) hCG
c) CRH
d) AFP
e) ATP

15) During pregnancy stroke volume can increase by
a) 10%
b) 20%
c) 30%
d) 40%
e) 50%

16) Labor cannot take place until all of which hormone’s effects are diminished?
a) Estrogen
b) Progesterone
c) Testosterone
d) Relaxin
e) Inhibin

17) Which of the following is the time from the onset of labor to the complete dilation of the
cervix?
a) Stage of dilation

b) Stage of expulsion
c) Placental stage
d) Gestation
e) Effacement

18) Involution is
a) When the placenta is expelled
b) When the umbilical cord is cut
c) When the uterus decreases in size
d) When the cervix dilates
e) None of these choices

19) What connects the umbilical vein to the inferior vena cava in infants?
a) Ductus venosus
b) Ductus arteriosus
c) Anteriosum
d) Patent ductus arteriosus
e) Superior vena cava

20) Which of the following is a principle hormone that releases milk into the mammary ducts?
a) Prolactin
b) PIH
c) PRH
d) Oxytocin
e) GnRH

21) Which of the following is a permanent change in an allele?
a) Mutation
b) Phenotype
c) Genotype
d) Dominant
e) Recessive

22) When phenotype can be drastically different depending on parental origin it is called:
a) Mutation
b) Translocation
c) Genomic imprinting
d) Incomplete dominance
e) Codominance

23) An example of incomplete dominance is
a) ABO blood groups
b) Sickle-cell disease
c) Angelman Syndrome
d) Prader-Willi Syndrome
e) PKU

24) If one parent has type A blood and one parent has type B blood, what blood type is possible
for their child?
a) AB
b) A
c) B
d) O
e) All of these choices

25) If a child has B blood, and the mother has B blood, what is the possible genotype of the
father?
a) B
b) O
c) AB
d) B or O
e) B, O or AB

26) Chromosome #15 is considered
a) A sex chromosome
b) An autosome
c) The SRY chromosome
d) A linked gene
e) A transposon

27) A Barr body
a) Is an inactivated X chromosome
b) Cannot be stained
c) Are transcribed and translated
d) Is seen in males
e) Is only found in humans

28) Which one represents the morula stage?

29) Which one represents the blastocyst stage?

30) What does diagram “A” represent?

31) What is line “A” pointing to?

32) What stage happens 3–4 days after fertilization?

33) What stage happens 6 days after fertilization?

34) Which structure was formerly called the blastocyst cavity?

35) This is composed of the syncytiotrophoblast and the cytotrophoblast.

36) Where is the amniotic cavity?

37) Which cells are derived from the yolk sac and form a connective tissue layer?

38) What is line “G” pointing to?

39) What is line “G” pointing to?

40) Where are the fetal blood vessels?

41) What is line “F” pointing to?

42) Describe the products of the three primary germ layers.

43) Describe the process and purpose of amniocentesis.

44) Describe the hormonal events surrounding parturition.

45) Distinguish between genotype and phenotype and explain how the environment may affect
each.

46) Red-green color blindness is a recessive, X-linked trait represented as Xc . (Normal color vision is represented as XC .) If a daughter has red-green color blindness, what must the genotypes of her parents be?

47) Which condition listed is a malpresentation in which the fetal buttocks or lower limbs present into the maternal pelvis?

48) Which condition listed is a developmental abnormality due to mechanical forces that mold a part of the fetus over a prolonged period of time?

49) Clubfeet is an example of which condition listed?

50) Which condition listed is also called morning sickness?

51) Which condition listed is a sex chromosome aneuploidy, usually due to trisomy XXY?

52) Which condition listed gives rise to individuals that are: somewhat mentally disadvantaged, sterile males with undeveloped testes, scant body hair, and enlarged breasts?

53) Which condition listed is a sex chromosome aneuploidy, caused by the presence of a single X chromosome designated XO?

54) Which condition listed gives rise to sterile females with virtually no ovaries and limited development of secondary sex characteristics?

55) Which condition listed is an infectious disease of childbirth resulting from an infection
originating in the birth canal and affecting the mother’s endometrium?

56) Which condition listed is a sex chromosome aneuploidy characterized by at least 3 X
chromosomes (XXX)?

57) Which condition listed is one of the most common causes of mental retardation and the most
common preventable cause of birth defects in the United States?

58) Which of the terms below describes the development of an organism from an
undifferentiated cell?

59) Which of the terms below includes all structures that develop from a zygote: the embryo, the
embryonic placenta and its associated membranes?

60) Which of the terms below describes the beginning or first discernable indication of the
development of an organ or structure?

61) Which of the terms below describes the chromosomal characteristic of an individual
presented as a systematic arrangement of pairs of metaphase chromosomes arranged by size?

62) What is the term used to describe the age of an embryo or fetus calculated from the presumed
first day of the last normal menstrual period?

63) In a heterozygous individual for a certain trait, the dominant allele gives polydactyly. What
is the masked, recessive trait in this individual?

64) In a heterozygous individual for a certain trait, the dominant allele gives syndactylism. What
is the masked, recessive trait in this individual?

65) In a heterozygous individual for a certain trait, the dominant allele gives Huntington’s
disease. What is the masked, recessive trait in this individual?

66) In a heterozygous individual for a certain trait, the dominant allele gives normal skin
pigmentation. What is the masked, recessive trait in this individual?

67) Which hormone causes release of milk into the mammary ducts via the milk ejection reflex?

68) Which of the following is a breast-feeding benefit for infants?

69) Which of the following is a function of the hormone corticotropin-releasing hormone?

70) Which of the following is a noninvasive prenatal test?

71) When are the three primary germ layers established during pregnancy?

72) Which of the following structures is(are) produced from the endoderm?

73) Which of the following structures is(are) produced from the endoderm?

a) Adrenal cortex
b) Gonads
c) Epithelium of the oral cavity
d) Epithelial lining of the pharynx
e) Arachnoid mater

74) Which of the following structures is NOT produced from the mesoderm?
a) Melanocytes
b) All skeletal muscle
c) All cardiac muscle
d) Blood vessels
e) Lymphatic tissue

75) Which of the following are major potential teratogens that affect embryonic development?
a) Alcohol
b) Cigarette smoke
c) Various prescription drugs
d) Irradiation
e) All of these

 

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Human Anatomy and Physiology Chapter 29 Practice Questions and Answers

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