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NUR 220 CCTC UNIT 1 NURSNUR 220 CCTC UNIT 1 NURSING ROLE IN CARING FOR THE PREGNANT FAMILY actual Exam questions fully solvedING ROLE IN CARING FOR THE PREGNANT FAMILY actual Exam questions$14.99
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NUR 220 CCTC UNIT 1 NURSNUR 220 CCTC UNIT 1 NURSING ROLE IN CARING FOR THE PREGNANT FAMILY actual Exam questions fully solvedING ROLE IN CARING FOR THE PREGNANT FAMILY actual Exam questions
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NUR 220 CCTC UNIT 1 NURSING ROLE IN CARING FOR THE PREGNANT FAMILY actual Exam questions fully solved
NUR 220 CCTC UNIT 1
NURSING ROLE IN CARING
FOR THE PREGNANT FAMILY
actual Exam questions and
answers 2025 latest update
Mitosis- - answer Process of cell division whereby both daughter
cells have the same number and pattern of chromosomes as the
original.
Purpose of mitosis: - answer produces cells for growth and tissue
repair. Cell division characteristic of all somatic cells.
What happens as the last phase of cell division nears completion in
Mitosis? - answer a furrow develops in the cell cytoplasm, which
divides it into two daughter cells, each with its own nucleus.
Daughter cells have the same diploid number of chromosomes (46)
and the same genetic makeup as the cell from which they came.
Meiosis- - answer The process of cell division that occurs in the
maturation of sperm and ova that decreases their number of
chromosomes by one-half.
Purpose of Meiosis: - answer produces reproductive cells
(gametes). Reduction of chromosome number by half (from diploid
(46) to haploid (23)), so that when fertilization occurs the normal
diploid number is restored. Introduces genetic variability.
,Number of daughter cells with Meiosis: - answer four daughter
cells, each containing one half the number of chromosomes of the
mother cell, or 23 chromosomes. Nonidentical to original.
What happens in the first cell division of meiosis? - answer the
chromosomes replicate. Then the homologous chromosomes pair
together. Instead of separating immediately, as in mitosis, the
chromosomes become closely intertwined. At each point of contact,
there is a physical exchange of genetic material between the
chromatids. New combinations are provided by the newly formed
chromosomes; the combinations account for a wide variation of
traits in people (hair or eye color). The chromosomes pairs then
separate, and the members of the pair move to opposite sides of
the cell. The cell divides, forming two daughter cells, each with 23
double-structures chromosomes- the same amount of DNA as a
normal somatic cell.
What happens in the 2nd cell division of meiosis? - answer The
chromatids of each chromosome separate and move to opposite
poles of each of the daughter cells. Cell division occurs, resulting in
the formation of four cells, each containing 23 single chromosomes
(the haploid number of chromosomes). These daughter cells contain
only 1/2 the DNA of a normal somatic cell.
When do chromosomal mutations occur? - answer during the
second meiotic division
EX: 1). if two of the chromatids do not move apart rapidly enough
when the cell divides. The stillpaired chromatids are carried into
one of the daughter cells and eventually form an extra chromosome.
2). if chromosomes break during meiosis
Gametogenesis- - answer the process by which germ cells, or
gametes (ovum and sperm), are produced.
How many chromosomes does a germ cell have? and why? - answer
23 chromosomes so that when the female gamete (egg or ovum)
,and the male gamete (sperm or spermatozoon) unite to form the
zygote (fertilized ovum), the normal human diploid number of
chromosomes (46) is reestablished.
Oogenesis- - answer the process that produces the female gamete,
called an ovum (egg).
When does a female present with all of the ova she will produce in
her lifetime? - answer at birth
When does meiosis begin in all oocytes? - answer before the
female fetus is born but stops before the first cell division is
complete and remains in this arrested phase until puberty.
When does the first meiotic division of the mature primary oocyte
occur? - answer during puberty
The first meiotic division of the mature primary oocyte produces: -
answer two cells of unequal size with different amounts of
cytoplasm but with the same number of chromosomes.
What are the two cells called that are produced by the first meiotic
division of the mature primary oocyte? - answer the secondary
oocyte and a minute polar body. They both contain 22 double
structured autosomal chromosomes and one double structured sex
chromosome (X).
Where does the first meiotic division occur? - answer in the
graafian follicle of the ovary.
When does a second meiotic division of the oocyte begin? - answer
at the time of ovulation and proceeds as the oocyte moves down the
fallopian tube
, What happens to the secondary oocyte when it moves into the
metaphase stage of cell division? - answer its meiotic division is
arrested until and unless the oocyte is fertilized
What is the result when the secondary oocyte completes the second
meiotic division after fertilization? - answer a mature ovum with
the haploid number of chromosomes and virtually all the cytoplasm.
The second polar body (also haploid) forms at this time. The first
polar body has now also divided, producing two additional polar
bodies. At the completion of meiosis, 4 haploid cells have been
produced: 3 polar bodies (which eventually disintegrate) and 1
ovum
Spermatogenesis- - answer the process by which mature
spermatozoa are formed, during which the number of chromosomes
is halved.
when does spermatogenesis occur? - answer during puberty
What happens before the first meiotic division of spermatogenesis?
- answer the diploid spermatogonium replicates before it enters
the first meiotic division, during which it is called the primary
spermatocyte.
During the first meiotic division, the spermatogonium replicates and
forms two cells called: - answer the secondary spermatocytes.
Each of which contains 22 double structured autosomal
chromosomes and either a double structured X sex chromosome or
a double structured Y sex chromosome
What happens during the second meiotic division of
spermatogenesis? - answer they divide to form 2 spermatids, each
with the haploid number of chromosomes. The spermatids undergo
a series of changes during which they lose most of their cytoplasm
and become sperm (spermatozoa). The nucleus becomes compacted
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