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Critical thiking & check your understanding
answers to end of lab for reproductivce
17
Anatomy
11/10/2012

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Term
T or F regarding meiosis:
gametes undergo 2 rounds of cell division
Definition
true
Term
T or F regarding meiosis:
crossover occurs , which allows for genetic diversity
Definition
true
Term
T or F regarding meiosis:
the DNA replicates before both meiosis I and II
Definition
false
Term
T or F regarding meiosis: meiosis is carried out only in the gonads in order to produce gametes
Definition
true
Term
the daughter cells produced by mitosis are ______ with ______ sets of chromosomes, whereas the gametes provided by meiosis are _____ with sets of chromosomes
Definition
dipoid, 2n
haploid, n
Term
spermatids migrate to the ______ to mature
Definition
epididymis
Term
A condition called testiucular torsion results when the _________
Definition
spermatic cord becomes twisted
Term
why is testicular torsion a surgical emergency?
Definition
the spermatic cord contains the :
testicular artery
testicular vein
Therefore blood flow to the testicle would be disrupted which can lead to tissue death , testicle loss, or loss of function
Term
what structure is sectioned in a vasectomy?
Definition
the vas deferens is sealed off at one of both sides
Term
how does a vasectomy act as an birth control method?
Definition

it prevents sperm from entering the  ejaculatory duct

 

when  vas deferens combines with seminal vesicle

Term
does a vasectomy alter the production of sperm
Definition
no, sperm is still made in the Semiferous tubules .

a vasectomy prevents sperm from exiting the body,
(sperm is reabsorbed by body)
Term
beingn prostatic hypertrophy def
Definition
enlargement of the prostate
Term
why is urinary retention a symptom of beingn prostatic hypertrophy
Definition
the prostate is continous with the urinary tract & connects direclty with the penile urethra when the prostate is enlarged the urethra is being compressed.
Term
what is an ectopic pregnancy?
Definition
fertilized ovum implants in fallopian tube instead of endometrium of uterus (womb)
Term
why is an ectopic pregnancy dangerous?
Definition
the fallopian tube is not made for exapnding and can rupture due to the growing ovum. Other symptoms include blood loss ,damage to fallopian tube, and abdominal pain.
Term
one of the major complaints of pregnant women is the need to urinate often, why?
Definition
the uterus is situated btwn the bladder and the rectum. Therefore as the pregancy progresss that uterus will become larger and will decrease the expansion the bladder (transitional epithelium).
Term
what happens when chromosomes dont fully seperate during meiosis 2,

also give an example
Definition
you can have a extra copy of a chromosome. For example trisomy 21 is the 3 copies of chromosome 21 (instead of 2). This is commonly known as Down's syndrome which delated cognitive ability and physical development.