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76 Cards in this Set
- Front
- Back
which of the following processes reduces the number of chromosomes in each daughter cell to half the number present in the parent cell?
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meiosis
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Forty-six chromosomes per body cell is known as the ___ number
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diploid
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Each primary spermatocyte undergoes meiotic division I to form:
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two haploid secondary spermatocytes
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a mature follicle ready to burst open from the ovary's surface is a:
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graafian cell
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fertilization occurs in the:
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fallopian tubes
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the phenomenon of "crossing over" takes place during:
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a meiosis I only
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sex cells contain 23 chromosomes and are therefore referred to as diploid
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false
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the process of "crossing over" allows for almost infinite variety to the genetic makeup of an individual
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true
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completion of meiosis II in the released oocyte requires the head of a sperm cell to enter the oocyte
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true
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zygote is the term used to describe ovulated ovum that is awaiting fertilization
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false
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Insemination and fertilization are synonymous terms
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false
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the ovum can live for up to 3 days
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false
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during oogenesis, the cytoplasm is not equally divided among daughter cells
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true
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sperm cells can live in the female reproductive tract for up to 3 days
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true
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about 3 days after fertilization, the zygote forms into a solid mass of cells called a:
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morula
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the outer wall of a blastocyst is referred to as the :
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trophoblast
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the " bag of waters" is also called the :
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amniotic sac
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Which of the following is not a primary germ layer?
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exoderm
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by which month of fetal development are all organ systems formed and functioning
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fourth
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placental tissue secretes large amounts of human chorionic gonadotropin (hCG) early in pregnancy
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true
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the yolk sac plays a critical role in the nutrition of the developing human offspring.
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true
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the process by which the primary germ layers develop into many different kinds of tissues is called organogenesis
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false
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the blastocyst is the hollow ball of cells
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true
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the division of the cells of the zygote is called the cleavage
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false
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stage two of labor is best described as the :
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time of maximum cervical dilation until the baby exits through the vagina
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fraternal twins:
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arise from two different sperm and two different ova
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the period of infancy lasts approximately from birth to:
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18 months
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a rare, inherited condition in which an individual appears to age rapidly is:
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progeria
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a birth weight generally triples by:
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12 months
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a cesarean section is a surgical procedure that delivers a new-born through an incision in the wall of the abdomen and uterine wall.
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true
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when a single zygote divides early in it's development and forms two separate individuals, it is ireffered to as identical twinning
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true
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stage one of labor usually lasts from a few minutes to an hour
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true
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neonates have both a lumbar and thoracic curve to their spines
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false
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girls experience adolescent spurts before boys do
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true
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a sound exercise program throughout life could reduce the effects of aging in which of the following bod systems?
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cardiovascular, skeletal, muscular
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clouding of the lens of the eye is called
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cataract
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The number of functioning nephron unites in the kidney's decreases by almost 50% between the ages of 30 and 75
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true
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progesterone therapy may be used to relieve some symptoms of menopause
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false
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pregnancy induced hypertension
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preeclampsia
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placenta grows too close to the cervical opening
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placenta previa
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miscarriage
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spontaneous abortion
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common type of ectopic pregnancy
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tubal pregnancy
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breast inflammation
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mastitis
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congenital abnormalities
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birth defects
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separation of placenta from uterine wall
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abruptio placentae
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childbed fever
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puerperal fever
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study of individual development before birth
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embryology
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hollow ball that implants itself in the uterus
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blastocyst
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conception
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fertilization
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birth
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parturition
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process where germ layers develop into various tissues
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histogenesis
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solid mass formed by zygote
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morula
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first four weeks of infancy
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neonate
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fertilized ovum
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zygote
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attachment of fertilized ovum in uterus
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implantation
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older adulthood
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senescence
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length of pregnancy
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gestation
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develops from the trophoblast
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chorion
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fertilized ovum
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zygote
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inside germ layer
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endoderm
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before birth
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antenatal
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length of pregnancy
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gestation
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structural "anchor" during pregnancy
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placenta
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process of birth
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parturition
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surgical procedure in which a newborn is delivered through an incision in the abdomen and uterine wall
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c-section
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study of how the primary germ layers develop into many different kinds of tissues
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histogenesis
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fertilization until the end of the eighth week of gestation
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embryonic phase
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monitors progress of developing fetus
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ultrasonogram
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degenerative changes in the urinary system that accompany old age include which of the following
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decreased capacity of bladder etc, less blood flow through kidneys, decrease in number of nephrons
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which of the following is characteristic of a disorder called presbyopia
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lens in eye hardens loses elasticity, farsightedness of some individuals, characteristic of old age
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which of the following structures is derived from ectoderm?
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brain
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older adulthood
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senescence
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study of aging
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gerontology
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Hutchinson-Gilford disease
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progeria
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fat accumulation in arteries
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atherosclerosis
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secondary sex characteristics
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adolescence
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