Which of the following mediates calcium reabsorption in the distal renal tubules?
aldosterone
hypocalcemia
parathyroid hormone
vitamin D
Correct Answer :
C. parathyroid hormone
self-explanatory.
Related Questions
Which statement is false concerning the epididymis?
each epididymis can be palpable at the postero-lateral surface of the testis
has 3 parts; head, body, and tail
new batches of sperms stay in the epididymis around 2 days for maturation
shares the same blood supply of the testis
Which zone of the prostate originates from the Wolffian duct tissue:
central zone
peripheral zone
transitional zone
periurethral glands
What antibiotic could result in red man syndrome?
vancomycin
clindamycin
streptomycin
tobramycin
Which nephron segment contains the most diluted urine in central diabetes insipidus patient?
proximal convoluted tubules
distal convoluted tubules
collecting duct
loop of Henle
Which medicine(s) might enhance hypoprothrombinemic effect on oral anticoagulants?
allopurinol
aminoglycosides
cimetidine
all of the above
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 of the following is NOT a part of the urogenital diaphragm structures?
perineal membrane
deep transverse perineal muscle
urethral sphincter
Camper`s fascia
Where do Cowper`s gland ducts drain into?
ejaculatory ducts
prostatic urethra
membranous urethra
bulbous urethra
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 are the first and second most common zones from where prostate cancers arise?
central then transitional
peripheral then transitional
peripheral then central
transitional then central
Which drug does NOT result in urinary retention?
terazosin, antihypertensive
benzodiazepines, psychotropic medicine
levodopa, anti-Parkinsonism medicine
brimonidine, glaucoma eye drops
Where is the gene sex-determining region (SRY) located at?
long arm of X chromosome
long arm of Y chromosome
short arm of Y chromosome
short arm of X chromosome
Which of the following is NOT related to von Hippel-Lindau disease?
retinal hemangioblastoma
ureteral atresia
pheochromocytomas
multiple cysts in the pancreas and kidneys
When should a 70 yrs. man with 40 ml prostate volume, and total PSA of 2.0 ng/ml, go for a prostate biopsy?
if PSA reading had exceeded 2.7 ng/ml over 12 months
if free PSA reading was less than 0.4 ng/ml
if total PSA reading was greater than 8 ng/ml
any of the above
All of the following conditions are related to obesity syndrome, EXCEPT:
super fertility
increase aromatization reaction
increase resistance to circulating insulin
sleep apnea
Which statement regarding post-obstructive diuresis (POD) is false?
urine production exceeding 200 ml/hr for 2 consecutive hours or producing greater than 3 L of urine in 24 hours is diagnostic of POD
pathologic POD can be exacerbated by excessive fluid replacement
the replacement fluid choice is ringer lactate
fluid resuscitation depends on the degree of dehydration
What vessels are located in the prostate neurovascular bundle?
Watson plexus
capsular arteries and veins
inferior vesical and midrectal vessels
Santorini plexus
Which artery(ies) supply(ies) the prostate?
middle rectal
inferior vesical
a & b
none of the above
Adult size of bladder capacity is achieved at what age?
5 6 yrs.
7 8 yrs.
9 10 yrs.
11 12 yrs.
What is the most frequent anomaly associated with multicystic renal dysplasia?
ureteral atresia
vesicoureteral reflux
ureteropelvic junction obstruction
ureteral duplication
Which statement is false concerning the gubernaculua?
degenerate after birth
called the caudal genital ligaments
help guide the testes down through the inguinal canals
represent undifferentiated mesenchyme
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
What degrades semenogelin and determines the consistency of the seminal coagulum is:
spermine
acid phosphatase
PSA
semenoglobulin
Which of the following does asymptomatic hematuria workup include?
cystoscopy
CT urography
urine cytology
all of the above
How does estrogen prevent lower UTI in postmenopausal women?
increasing vaginal secretions
decreasing vaginal pH
increasing normal vaginal flora
decreasing bacterial adherence
In males, which of the following structure(s) can NOT be palpated during digital rectal examination?
pelvic floor muscles
seminal vesicles
anterior surface of the sacrum
median lobe of the prostate
Which α- adrenergic receptor subtype mediates smooth muscle contraction of the prostate?
α1-A
α2-A
α1-B
α2-B
What is the approximated bladder capacity of an 8 yrs. girl?
150 ml
200 ml
250 ml
300 ml
Which of the prostate medications could result in significant hypotension?
finasteride
prazosin
silodosin
vardenafil
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