Serum testosterone should be measured:
at mid-day
at the hour of sleep
in the morning
late afternoon
Correct Answer :
C. in the morning
due to the diurnal variation of serum testosterone, it should be measured in the morning as it scores the peak.
Related Questions
The commonest neoplasms that metastasize to kidneys come from:
breasts
thyroids
lungs
liver
Where is Santorini plexus located?
at either side of the prostate
in the pubo-prostatic space
anterior to the seminal vesicles
posterior to the vaso-epididymal junction
What type of renal tubular acidosis (RTA) does demonstrate aldosterone resistance?
type 1
type 2
type 3
type 4
Between which 2 fascial planes does the prostatic neurovascular bundle travel?
prostatic fascia and levator fascia
prostate capsule and prostatic fascia
Denonvilliers fascia and prostate capsule
Denonvilliers fascia and endopelvic fascia
Which of the following conditions could result in white urine?
chyluria
bacteriuria
phosphaturia
all 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.
To which group of lymph nodes do tumors at the anterior superior area of the bladder, first, drain?
hypogastric
internal iliac
external iliac
lateral sacral
Which of the following contributes second to the seminal fluid by volume?
seminal vesicles
the prostate
testes
bulbourethral glands
Which statement is false concerning smegma?
it is the white secretion produced under the foreskin in males
it has a crucial role in penile cancer development
it contains lysozymes, chymotrypsin, neutrophil elastase and cytokines
female smegma can be found between the labia
What is the best method to evaluate calcium levels in the urine?
from early morning urine sample
comparing urine and serum calcium at a given time
performing 24 urine collection
from a mid-stream urine sample
Which part of the prostate is traversed by the ejaculatory duct:
central zone
peripheral zone
transitional zone
fibromuscular stroma
Which of the renal artery occlusive conditions, commonly, do NOT affect renal function?
intimal fibroplasia
medial fibroplasia
medial hyperplasia
serosal hyperplasia
Which of the following mediates calcium reabsorption in the distal renal tubules?
aldosterone
hypocalcemia
parathyroid hormone
vitamin D
In which condition can NOT creatinine level be 1200 mg/dL?
an aspirate of pelvic urinoma
in untreated end-stage renal failure disease
a sample from a wound drain after pyeloplasty
a sample from suprapubic catheter
Which part of the male urethra is the narrowest?
the membranous
the bladder neck
the bulbous
the external urethral meatus
What is the most likely diagnosis of an erectile dysfunction patient with low plasma testosterone and high prolactin levels?
pituitary adenoma
adrenal adenoma
Kallmann syndrome
Klinefelter syndrome
What is the approximated bladder capacity of an 8 yrs. girl?
150 ml
200 ml
250 ml
300 ml
In which organelle in Leydig cell does testosterone synthesis take place?
ribosome
mitochondria
Golgi apparatus
endoplasmic reticulum
Which of the prostate medications could result in significant hypotension?
finasteride
prazosin
silodosin
vardenafil
In utero, which hormone stimulates the development of Wolffian ducts?
estradiol
DHT
FSH
testosterone
What could render red urine workup, false positive for hematuria?
dehydration
myoglobinuria
high doses of vitamin C
all of the above
Which statement is NOT related to Klinefelter syndrome?
sterility is the rule
has a considerable short life span
treatment requires testicular microdissection and sperm extraction
47 XXY karyotype
All of the following develop from the mesonephric ducts, EXCEPT:
vas deferens
seminal vesicles
appendix epididymis
appendix testis
Which disease is described best by the following manifestations: grand mal epilepsy, mental retardation, hypertension, angiomyolipoma, adenoma sebaceum, bilateral enlarged kidneys, and normal renal function?
autosomal dominant polycystic kidney disease
von Hippel-Lindau disease
tuberous sclerosis
Sturge-Webber syndrome
What is the function of PSA in semen?
increases semen volume
has antimicrobial activity
liquefies the seminal coagulum
decreases semen pH
Which statement is false concerning capacitation of spermatozoa?
occurs after acrosome reaction
entails removal of a glycoprotein layer
it is a biochemical event of sperm maturation
changes occur in the female genital tract
What nerve provides the major neural supply to the striated urinary sphincter and levator ani muscle?
somatic innervations
sympathetic fibers from T11 - L2
the pudendal nerve
the obturator nerve
Which innervations mediate detumescence?
cavernous nerves
dorsal nerves of the penis
sympathetic nervous system
parasympathetic nervous system
Which of the following is false regarding zona glomeruloza?
the most superficial layer of the adrenal cortex
responses to increased potassium levels, renin or decreased renal blood flow
it causes pheochromocytoma
secretes aldosterone
How many renal papillae are there in a typical kidney?
4 to 6
7 to 9
10 to 12
13 to 14