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Unit 5 Chapter 29

Quiz 96

QuestionAnswer
Primary germ layers are formed during __________blank. gastrulation
True or False: The chorion forms the fetal part of the placenta. True
True or False: During implantation, the embryoblast undergoes gastrulation. False ;It undergoes embryogenesis
Which of the following does not have potentially teratogenic effects? Smoking Alcohol Infectious diseases Sunlight X-rays Sunlight
__________blank pass(es) from the maternal blood to the fetal blood. Fetal __________blank pass(es) the other way. Oxygen and nutrients; wastes
Which of the following is not a known benefit of regular exercise? Maintained joint mobility Maintained strength Decreased incidence of hypertension Maintained endurance Prolonged life expectancy Prolonged life expectancy
Down syndrome (trisomy-21) results from __________ nondisjunction
During implantation, the trophoblast divides into a superficial layer called the __________blank, which is composed of a multinucleate mass of cytoplasm. syncytiotrophoblast
True or False: Sperm must travel to the distal end of the uterine tube to encounter the egg before it dies. True
Oxygenated blood reaches the fetus through the __________blank. umbilical vein
As it implants, the conceptus is nourished by means of __________blank. trophoblastic nutrition
Which of the following organ systems faces the greatest physiological challenge in the transitional period after birth? Respiratory system
Which of the following is not a known cause of congenital anomalies? Infectious disease in the mother during pregnancy A genetic disorder Exposure to teratogens during pregnancy Smoking during lactation Smoking during pregnancy Smoking during lactation
True or False: The placenta begins to form after week 8. False
Regarding fertilization, which of the following events happens first? Formation of a fertilization membrane The fast block to polyspermy The slow block to polyspermy The cortical reaction The acrosomal reaction The acrosomal reaction
Only autosomal trisomies involving chromosomes 13, 18, and 21 are survivable. Why would this be? These are relatively gene-poor chromosomes.
True or False: Inadequate liver function is the most common reason that premature infants suffer from multiple dysfunctions. True/
Which of the following is not a derivative of ectoderm? Salivary glands The nervous system The epidermis Cutaneous glands The dermis The dermis
Urine retention is a greater problem for elderly men than for elderly women because men __________blank. can develop benign prostatic hyperplasia
True or False: A person in his or her 90's can increase muscle strength by two or three times with 40 minutes of isometric exercise per week. True
Created by: Gluis5974
 

 



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