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Module19.2 Sexuality

Family Planning

QuestionAnswer
What is a Barr body? Pg.1376 It is the secondary X in females. The second X is inactivated in normal healthy females
A Barr body is always found in males when testing for sex chromosomes. T/F Pg.1376 False. Barr body's are only found in females.
What is the most common sex chromosome abnormalities in Females? Pg.1376 Turner syndrome • 45, XO with no Barr bodies present
What is the most common sex chromosome abnormalities in ?Males? Pg.1376 Klinefelter syndrome • 47, XXP with one Barr body present
What is an important principle when distinguishing autosomal dominant disorders from X-linked disorders? Pg.1376 Males & females are equally affected Also a father can pass down the abnormal gene to his son
What are some examples of autosomal dominant inherited disorders? Pg.1376 Huntington disease Polycystic Kidney Disease Neurofibromatosis (Von Recklinghausen disease) Achondroplastic dwarfism Phocomelia
What is phocomelia? Pg.1376 a developmental anomaly characterized by the absence of the upper portion of limbs; a hand attached to a shoulder
What mode of inheritance has a abnormal gene overshadowing a normal gene? Pg.1376 Autosomal dominant inheritance
What mode of inheritance requires the affected individual to have two abnormal genes? Pg.1376 Autosomal recessive inheritance
What are the most common autosomal recessive inherited disorders? Pg.1377 Sickle cell disease, phenylketonuria, galactosemia, cystic fibrosis, Tay–Sachs disease, & most metabolic diseases
What mode of inheritance has an abnormal gene carried on X chromosome? Pg.1377 X-linked recessive inheritance
What are the most common X-linked recessive inheritance disorders? Pg.1377 Hemophilia, Duchenne muscular dystrophy, color blindness
What mode of inheritance results in Vitamin D-resistant rickets & fragile X syndrome? Pg.1377 X-linked dominant inheritance
What are some main characteristics of autosomal dominant inheritance? Pg.1376 trait heterozygous, Family pedigree shows multiple generations with disorder, Affected individual has 50% chance of passing on the abnormal gene, Males and females equally affected
What are some main characteristics of autosomal recessive inheritance? Pg.1376 two abnormal genes, Carrier is heterozygous for abnormal gene and clinically normal, Affected individual may have clinically normal parents, 25% chance of affected child with each pregnancy
What are some main characteristics of X-linked recessive inheritance? Pg.1377 Sex-linked disorder, Abnormal gene carried on X chromosome, No male-to-male transmission, 50% son will be unaffected & daughter will be carrier
What are some main characteristics of X-linked dominant inheritance? Pg.1377 Rare, Heterozygous females affected, fathers will have affected daughters, No male-to-male transmission
What are some main characteristics of fragile X-syndrome? Pg.1377 Inheritied mental retardation, CNS disorder linked to a “fragile” site on the X chromosome, Male: moderate mental retardation, large protuberant ears, & large testes after puberty Female: do not have abnormal features, 1/3 mildly retarded
What are some main characteristics of multifactorial inheritance? Pg.1377 Interaction of genes and environmental factors, Vary from mild to severe, Often a sex bias,
What method of birth control is the least reliable? Pg.1378 a) Natural family planning b) Calendar rhythm method c) Basal body temperature d)ovulation method b) Calendar rhythm method
What are the main characteristics for fertility awareness-based methods (aka natural family planning)? Pg.1378 free, safe, and acceptable according to our religion, does not involve the use of artificial substances or devices, May interfere with sexual spontaneity, Requires months of charting cycles before use, Requires a lot of motivation and education
What are the main patient teaching points for natural family planning? Pg.1378 Sperm life span 3-6 days, Ovum life span 1-3 days, Maximum fertility for woman occurs 6 days before ovulation, Method requires periods of abstinence & recording certain events throughout cycle, Partner cooperation is important
What are the main characteristics for calendar rhythm method(aka standard days method)? Pg.1378 Based on assumption that ovulation tends to occur 14days before the start of next menstrual cycle, Least reliable
What are the main patient teaching points for calendar rhythm method(aka standard days method)? Pg.1378 To use method women: record menstrual cycles for 6months to identify shortest & longest cycles,1st day of menstruation is first day of cycle, Fertile phase is calculated from 18 days before the end of the shortest recorded cycle through 11days of the long
What are the main characteristics for basal body temperature (BBT) method? Pg.1378 Woman takes temperature on awakening , Before activity, , May interfere with sexual spontaneity
What are the main patient teaching points for basal body temperature (BBT) method? Pg.1378 Record on temperature graph, Use a basal body temperature thermometer or a tympanic, Record for 3-4 months, Temp sometimes drops before ovulation, couple must avoid intercourse the day of temp rise & 3days after
Created by: Studying_Nurse