What is the narrowest part of the ureter?
uretero-pelvic junction
uretero-vesical junction
where ureters cross the pelvic brim
where ureters cross the common iliac bifurcation
Correct Answer :
B. uretero-vesical junction
uretero-vesical junction is 1 5 mm wide.
Related Questions
What causes Cushing`s disease is:
bilateral adrenal hyperplasia
pituitary over secretion of ACTH
exogenous administration of glucocorticoids
immune-mediated disease
Which of the following is NOT a component of the normal semen?
zinc
fructose
prostate-specific antigen
alkaline phosphatase
Which medicine(s) might enhance hypoprothrombinemic effect on oral anticoagulants?
allopurinol
aminoglycosides
cimetidine
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Regarding multicystic kidneys, at what age does the compensatory renal growth end?
at birth
2 years
at puberty
none of the above
What is the approximated bladder capacity of an 8 yrs. girl?
150 ml
200 ml
250 ml
300 ml
Which of the following diabetes mellitus treatments causes erectile dysfunction?
long-acting insulin
metformin
sulfonylurea
none of the above
Which statement is false concerning the dipstick method for detecting hematuria?
depends on the ability of hemoglobin to oxidize a chromogen indicator
negative results need to be confirmed by microscopic examination
has a sensitivity of 95% and a specificity of 75%
the presence of many epithelial cells suggests skin or vaginal contamination
Which microbe causes red diaper syndrome?
Serratia marcescens
Streptococcus pyogenes
Clostridium difficile
Staphylococcus saprophyticus
Which area in the nervous system is tested by bulbocavernosus reflex?
brain stem
C2 C4
S2 - S4
L2 - L4
Which agent is most likely to cause hemorrhagic cystitis?
cisplatin
ifosfamide
phosphomycin
amphotericin B
Which action of thigh muscles could be impaired if the obturator nerve was injured during endoscopic resection of bladder tumors?
adduction
abduction
flexion
extension
What is the prime effect of antidiuretic hormone on kidneys?
increase collecting duct permeability
increase medullary blood flow
decrease cortical blood flow
decrease potassium secretion
What increases blood volume and pressure in corpora cavernosa during erection is:
increase in sympathetic discharge
contraction of ischiocavernosa and bulbocavernosa muscles
increase arterial flow and closure of emissary veins
shunting of blood from the dorsal to the central cavernosal artery
What do the specialized cells, at the juxtaglomerular apparatus, produce?
erythropoietin
renin
angiotensin I
angiotensinogen
Which of the following hormones, primarily, controls spermatogenesis?
GnRH
testosterone
LH
FSH
What do urine tests examine to detect hematuria?
catalase activity of erythrocytes
peroxidase activity of erythrocytes
lyase activity of erythrocytes
none of the above
In utero, which hormone stimulates the development of the prostate gland?
estradiol
DHT
FSH
testosterone
By which of the following structures, do the fused lower poles of hoarseshoe kidneys get trapped during embryologic ascent?
inferior mesenteric artery
superior mesenteric artery
celiac artery
common iliac artery
What vessels are located in the prostate neurovascular bundle?
Watson plexus
capsular arteries and veins
inferior vesical and midrectal vessels
Santorini plexus
Which statement concerning urine pH is false?
influenced by food and medications
renal stones form at the extremes of pH range
reliable only when measured by 24 hr. urine collection
ranges from 4 7
What is the best initial therapy for hyponatremic dehydration?
administration of hypertonic saline
administration of crystalloid
administration of normal saline
administration of ringer lactate
Which lab results indicate poor prognosis of male infertility?
azoospermia; normal FSH; increase LH
azoospermia; decrease FSH; normal LH
oligospermia; increase FSH; normal LH
oligospermia; normal FSH; decrease LH
Which zone of the prostate originates from the Wolffian duct tissue:
central zone
peripheral zone
transitional zone
periurethral glands
Which class of the following diuretics could cause erectile dysfunction?
loop diuretics
thiazide diuretics
potassium sparing diuretics
osmotic diuretics
What could cause autonomic dysreflexia?
full bladder or rectum
tooth extraction
hypertension medications
uncontrolled diabetes mellitus
Which organ contributes most to the seminal fluid volume?
testes
prostate
seminal vesicles
bulbourethral glands
Which of the prostate medications could result in retrograde ejaculation?
tamsulosin
doxazosin
dutasteride
alfuzosin
Which of the following process(es) is (are) reversible?
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aromatase enzyme reduces testosterone to estrogen
PSA molecule binds to α1-antichymotrypsin and α2-macroglobulin
none of the above
What causes ureteral dilation during pregnancy is:
mechanical compression by the gravid uterus
physiological increase urine flow during pregnancy
elevated levels of progesterone
reflex inhibition of ureteral contractions
Which of the following is NOT a side effect of hydrochlorothiazide?
hypercholesterolemia
hyperuricemia
hypoglycemia
hypercalcemia