Where is the centre of reflex erection located at?
the brain cortex
the sacral cord
the lumbar cord
the hypothalamus
Correct Answer :
B. the sacral cord
afferent pudendal inputs to the sacral segment of the spinal cord stimulate the nervi erigentes to produce erection.
Related Questions
What does make UTI more common in mid-aged females than in males?
short female urethra
pregnancy
vaginal colonization with enterobacteria
all the above
What is false about purple urine bag syndrome?
occurs due to the interaction between the chemical components of the urine and polyvinyl chloride material in the urine bag
it is commonly symptomless
more common in female nursing home residents
commonly implicated bacteria are K. pneumoniae, P. mirabilis, E. coli
Which statement is true about the female urethra?
harder to catheterize when compared to the male urethra
4 inch long
opens into the vestibule below the clitoris
gets wider at the post-menopausal age
What is false concerning fosfomycin antibiotic?
has a limited cross-resistance with most common antibacterial agents
causes injection site reactions
is active against most uropathogens
is effective as a single-dose agent
Hematuria of glomerular origin is associated with:
significant proteinuria, dysmorphic RBCs, RBC casts
glycosuria, eumorphic RBCs, WBC casts
hypercalciuria, eumorphic RBCs, granular casts
proteinuria, dysmorphic RBCs, hyaline casts
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 is the prime effect of antidiuretic hormone on kidneys?
increase collecting duct permeability
increase medullary blood flow
decrease cortical blood flow
decrease potassium secretion
Regarding renal ectopia, usually, the adrenals:
are cross ectopic
are at their normal position
travel with the kidneys
undergo ischemic atrophy
What is the approximated bladder capacity of an 8 yrs. girl?
150 ml
200 ml
250 ml
300 ml
What is false concerning PSA molecule?
the free form of PSA exists in small proportions in the body, and found mainly in BPH and in the ejaculate
α1- anti chymotrypsin binds to 3 epitopes of the PSA molecule to form a complexed PSA
α2- macroglobulin binds to 5 epitopes of the PSA molecule to form a complexed PSA
the purified PSA molecule has a molecular weight of 90 kDa
In which body tissue(s) are creatine and phosphocreatine converted to creatinine?
bone marrow
skeletal muscles
brown fat
liver
At which condition is alpha-fetoprotein most frequently elevated?
infiltrating ductal carcinoma of the breast
seminoma
hepatocellular carcinoma
malignant melanoma
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
Which of the following explains infertility in liver cirrhosis male patients?
decrease plasma estradiol levels
increase plasma testosterone-estradiol-binding globulin levels
suppression of suprarenal androgens
exaggerated pituitary response to feedback hormones
What vessels are located in the prostate neurovascular bundle?
Watson plexus
capsular arteries and veins
inferior vesical and midrectal vessels
Santorini plexus
Which of the following is (are) direct branch(es) of the abdominal aorta?
median sacral artery
inferior phrenic arteries
gonadal arteries
all of the above
Which of the following process(es) is (are) reversible?
5α-reductase enzyme reduces testosterone to DHT
aromatase enzyme reduces testosterone to estrogen
PSA molecule binds to α1-antichymotrypsin and α2-macroglobulin
none of the above
Which agent is safe to kidneys?
amoxicillin
gentamycin
diclofenac
herb extract
Which of the renal artery occlusive conditions, commonly, do NOT affect renal function?
intimal fibroplasia
medial fibroplasia
medial hyperplasia
serosal hyperplasia
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
Which of the following does asymptomatic hematuria workup include?
cystoscopy
CT urography
urine cytology
all of the above
Which structure is a part of the renal hilum?
renal pelvis
branches of the renal artery
tributaries of renal vein
all of the above
Which type of renal stone crystals is known as coffin lid?
oxalate
struvite
urate
cystine
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 artery is NOT a branch of the anterior division of internal iliac artery?
superior vesical artery
inferior vesical artery
superior gluteal artery
inferior gluteal artery
What is false about indinavir sulfate stones?
intratubular crystal formation might occur
CT cannot reliably confirm the presence of indinavir calculi
stone formation is demonstrated in 80% of patients taking the medication
is a protease inhibitor with poor solubility and significant urinary excretion
Which zone of the prostate originates from the Wolffian duct tissue:
central zone
peripheral zone
transitional zone
periurethral glands
Bacterial resistance to antibiotics may occur because of:
inherited chromosomal-mediated resistance
acquired chromosomal-mediated resistance
extrachromosomal-mediated resistance
all of the above
Which organism is capable of proliferation in the urine and causing urethritis?
Ureaplasma urealyticum
Chlamydia trachomatis
E. coli
Neisseria gonorrhea
What is the creatinine clearance in ml/min for a 70 kg man aging 50 yrs. with 1.1 mg/dL serum creatinine?
79.54
44.19
84.15
94.25