CH 21 & 22 SG

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tpvang
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297886
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CH 21 & 22 SG
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2015-03-08 19:19:36
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21 22 SG
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CH 21 & 22 SG
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  1. The embryonic stage that becomes implanted in the uterus is the:
    A) 4-cell stage
    B) blastocyst
    C) 16-cell stage
    D) morula
    B) blastocyst
    (this multiple choice question has been scrambled)
  2. The chromosome number of a zygote is:
    A) 23, the haploid number
    B) 46, the haploid number
    C) 23, the diploid number
    D) 46, the diploid number
    D) 46, the diploid number
    (this multiple choice question has been scrambled)
  3. The average gestation period is approximately _____ weeks long, and the first _____ weeks are considered the period of embryonic growth.
    A) 40/8
    B) 42/4
    C) 46/16
    D) 38/16
    A) 40/8
    (this multiple choice question has been scrambled)
  4. the fluid that surrounds the embryo-fetus and serves as a cushion is:
    A) plasma
    B) amniotic fluid
    C) intracellular fluid
    D) chorionic fluid
    B) amniotic fluid
    (this multiple choice question has been scrambled)
  5. The first blood cells for the fetus are formed by the:
    A) RBM
    B) yolk sac
    C) chorion
    D) spleen
    B) yolk sac
    (this multiple choice question has been scrambled)
  6. During the third stage of labor:
    A) the cervix dilates
    B) amniotic fluid exits through the birth canal
    C) the infant is delivered
    D) the placenta is delivered
    D) the placenta is delivered
    (this multiple choice question has been scrambled)
  7. the second stage of labor includes all of these except:
    A) strong contractions of the myometrium
    B) rupture of the amniotic sac
    C) delivery of the infant
    D) secretion of oxytocin by the posterior pituitary gland.
    B) rupture of the amniotic sac
    (this multiple choice question has been scrambled)
  8. the first stage  of labor includes all of these except:
    A) delivery of the infant
    B) weak contractions of the myometrium
    C) dilation of the cervix
    D) rupture of the amniotic sac
    A) delivery of the infant
    (this multiple choice question has been scrambled)
  9. a gene is the genetic code for one:
    A) protein
    B) cell
    C) RNA
    D) DNA
    A) protein
    (this multiple choice question has been scrambled)
  10. with respect to a particular trait, the term genotype means?
    A) the sex chromosomes that are present
    B) the appearance of the individual
    C) the genetic makeup of the individual
    D) the haploid number of chromosomes
    C) the genetic makeup of the individual
    (this multiple choice question has been scrambled)
  11. a pair of homologous chromosomes includes:
    A) a maternal and paternal chromosome of the same number
    B) two paternal chromosomes of the same number
    C) two maternal chromosomes of the same number
    D) a maternal and paternal chromosome of different numbers
    A) a maternal and paternal chromosome of the same number
    (this multiple choice question has been scrambled)
  12. A person who is heterozygous for a particular trait may have:
    A) two recessive genes
    B) two dominant genes
    C) a dominant gene and a recessive gene
    D) two sex-linked genes
    C) a dominant gene and a recessive gene
    (this multiple choice question has been scrambled)
  13. with respect to a particular trait, the term phenotype refers to:
    A) the appearance of the individual
    B) the diploid number of chromosomes
    C) the genetic makeup of the individual
    D) the number of alleles present
    A) the appearance of the individual
    (this multiple choice question has been scrambled)
  14. The hereditary material of a cells is contained in the:
    A) DNA in the chromosomes
    B) protein in the nucleus
    C) protein in the chromosomes
    D) DNA in the cell membranes
    A) DNA in the chromosomes
    (this multiple choice question has been scrambled)
  15. a contagious disease is always:
    A) secondary
    B) self-limiting
    C) non-communicable
    D) communicable
    D) communicable
    (this multiple choice question has been scrambled)
  16. an infection in which the person shows no symptoms is called:
    A) all of these
    B) subclinical
    C) inapparent
    D) asymptomatic
    A) all of these
    (this multiple choice question has been scrambled)
  17. a virus can reproduce only in:
    A) a cell
    B) none of these
    C) the blood
    D) tissue fluid
    A) a cell
    (this multiple choice question has been scrambled)
  18. some bacilli may survive unfavorable environments by forming:
    A) cell walls
    B) toxins
    C) capsules
    D) spores
    D) spores
    (this multiple choice question has been scrambled)
  19. besides inhibiting the growth of pathogens, the resident flora of the colon produce:
    A) antibodies
    B) vitamins
    C) hormones
    D) carbohydrates
    B) vitamins
    (this multiple choice question has been scrambled)
  20. the time between the entry of the pathogen and the appearance of the symptoms is called the:
    A) dormant stage
    B) latent period
    C) self-limiting stage
    D) incubation period
    D) incubation period
    (this multiple choice question has been scrambled)
  21. a mycosis is an infection caused by?
    A) bacteria
    B) fungi
    C) worms
    D) protozoa
    A) bacteria
    (this multiple choice question has been scrambled)
  22. in women, the normal flora of the vagina creates an _____ pH that prevents the growth of pathogens.
    A) neutral
    B) very alkalinic
    C) acidic
    D) alkaline
    C) acidic
    (this multiple choice question has been scrambled)
  23. an infection that begins suddenly and spreads quickly throughout the body may be called:
    A) acute and systemic
    B) chronic and localized
    C) acute and localized
    D) chronic and systemic
    A) acute and systemic
    (this multiple choice question has been scrambled)
  24. an infection that is caused by the person's own normal flora in an abnormal site is called:
    A) nosocomial
    B) symptomatic
    C) epidemic
    D) endogenous
    D) endogenous
    (this multiple choice question has been scrambled)
  25. Rod-shaped bacteria that are capable of movement are:
    A) cocci with capsules
    B) bacilli with capsules
    C) bacilli with flagella
    D) cocci with flagella
    C) bacilli with flagella
    (this multiple choice question has been scrambled)
  26. Viruses cause disease by doing what in cells?
    A) deactivating the cells
    B) activating the cells
    C) becoming dormant
    D) reproducing in them
    D) reproducing in them
    (this multiple choice question has been scrambled)
  27. bacteria  that can reproduce either in the presence or absence of oxygen are called:
    A) anaerobic
    B) aerobic
    C) facultatively anaerobic
    D) very talented
    C) facultatively anaerobic
    (this multiple choice question has been scrambled)
  28. which of these is not a portal of entry for pathogens?
    A) unbroken skin
    B) mouth
    C) nose
    D) reproductive tract
    A) unbroken skin
    (this multiple choice question has been scrambled)
  29. an infection acquired following a previous infection that lowers a person's resistance is called?
    A) self-limiting
    B) symptomatic
    C) secondary
    D) endemic
    C) secondary
    (this multiple choice question has been scrambled)
  30. further mitotic divisions are called _____ and produce four cells, then eight cells, and so on...
    Cleavage
  31. A solid sphere of embryonic cells is called a _____.
    Morula
  32. as mitosis continues, the solid sphere becomes hollow and is called the ______.
    Blastocyst
  33. The outer layer of the blastocyst is called the ______.
    Trophoblast
  34. ↝ contains fluid that absorbs shock around the embryo
    ↝ contains fluid into which fetal urine is excreted
    Amnion
  35. Contains cells that will become oogonia or spermatogonia
    yolk sac
  36. Dominant-recessive traits
    ↝ Mom has blond hair (recessive): bb
    ↝ Dad has brown hair (dominant): BB

    BB x bb 
    each child has 100% of having brown hair 0% of having blond hair.
  37. Dominant-recessive traits
    ↝ Mom has blond hair (recessive): bb
    ↝ Dad has brown hair (heterozygous): Bb

    bb x Bb
    each child is 50% chance brown hair, and 50% having blond hair
  38. Inheritance of blood type alleles
    ↝ Mom has type O blood: OO
    ↝ Dad has heterozygous type A: AO

    AO x OO
    each child 50% having type O and 50% having type A
  39. Both mom and dad type AB blood. what are the possibilities type for their children.

    AB x AB
    • ⇰ 25% having type A
    • ⇰ 25% having type B
    • ⇰ 50% chance having type AB
    • ⇰ 0% having type O.
  40. Inheritance of Sex-Linked traits
    Mom is carrier Red-Green color blindness: XcX
    Dad is Red-Green color blind: XcY

    XcX x XcY
    • ⇰ each daughter 50% CB with 50% carrier of this trait.
    • ⇰ each son 50% CB with 50% normal color vision
  41. Inheritance of Sex-Linked traits
    Mom is Red-Green color blindness:XcXc
    Dad is normal color vision: XY

    XcXc x XY
    • ⇰ Daughter 0% chance CB and 100% carrier of this trait
    • ⇰ Son 100% chance CB and 0% chance having normal color vision
  42. Refers to bacteria and all other living things using two names (binomial nomenclature).
    Genus and Species
  43. in binomial nomenclature, the name placed first is always capitalized and is the larger category.
    The genus
  44. in binomial nomenclature, the naming is second and isn't capitalized which is within a smaller category.
    The species
  45. The microorganisms that are on or in the body for short periods of time are called ______.
    Transient flora
  46. The microorganisms usually on or in most of us in specific sites are called ______.
    resident floral
  47. a microorganism that is usually harmless but may become a pathogen in certain circumstances is called an ______.
    opportunist
  48. The ability of a pathogen to cause disease is called ______.
    virulence
  49. The total of the body's defenses against pathogens is called _____.
    resistance
  50. Infections where symptoms are present
    Clinical
  51. Infections where it lasts a certain length of time and is usually followed by recovery.
    self-limiting
  52. An infection in which a person shows no symptoms.
    Subclinical, asymptomatic, inapparent
  53. observable or measurable changes, in which the person shows no symptoms.
    symptoms
  54. People who show no symptoms at all maybe sources of the pathogen for others, who may then develop clinical infections.
    Reservoirs
  55. infection confined to one area of the body.
    localized
  56. bacteria in the blood; always serious
    septicemia
  57. infection that Progresses slowly, or may last a long time
    Chronic
  58. infection acquired at the hospital, or other institution.
    Nosocomial
  59. pathogens can enter through breaks in skin, nose, mouth, eye, reproductive sites...
    port of entry
  60. pathogens can exit through respiratory droplets, cutaneous contact, blood from wound/bites, urine/feces, sexual contact.
    portal of exit
  61. diseases that cannot transmitted from host to host are called?
    noncommunicable
  62. inanimate objects that carry pathogens
    fomites
  63. the communicable diseases that are easily spread from host to host by casual contact are called?
    contagious
  64. the shape of this bacteria is spherical
    Coccus
  65. The shape of this bacteria is spiral?
    spirillum
  66. bacteria that reproduce only in the presence of oxygen
    aerobic
  67. bacteria that reproduce only in the absence of oxygen.
    Anaerobic
  68. a virus, RNA or DNA is surrounded by a protein shell called?
    capsid
  69. the virus that affects skin cells, usually mild and self-limiting
    chickenpox
  70. aka German measles are able to cross placenta to fetal circulation.  This virus can cause congenital birth defects.  In most serious cases miscarriage or stillbirth.
    Rubella
  71. Intestinal protozoan parasites of people which cause diarrhea. People acquire these by ingesting food or water contaminated with the cysts of these species.
    • Dysentery
    • Giardiasis
  72. plasmodium affects hundreds to millions of people throughout the world causing 2-3 millions deaths each year is probably the most important protozoan parasite.
    malaria

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