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4

Which of the following hormones, primarily, controls spermatogenesis?

A. GnRH

B. testosterone

C. LH

D. FSH

Correct Answer :

B. testosterone


testosterone controls spermatogenesis probably through Sertloi`s cells.

Related Questions

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4

Which of the following is NOT a component of the normal semen?

A. zinc

B. fructose

C. prostate-specific antigen

D. alkaline phosphatase

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4

During fluoroscopy, what is the main source of radiation hazards that urologists could be exposed to?

A. scattered radiation from the unleaded wall

B. scattered radiation from the patient

C. scattered radiation from the floor and ceiling

D. radiation from the primary beam

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4

Which antibiotic is the best to treat soft tissue infection with methicillin-resistant Staphylococcus aureus (MRSA) in hospitalized patients?

A. vancomycin

B. cefotaxime

C. penicillin G

D. tobramycin

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4

Where is the centre of reflex erection located at?

A. the brain cortex

B. the sacral cord

C. the lumbar cord

D. the hypothalamus

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4

What do urine tests examine to detect hematuria?

A. catalase activity of erythrocytes

B. peroxidase activity of erythrocytes

C. lyase activity of erythrocytes

D. none of the above

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4

Which statement is false concerning the epididymis?

A. each epididymis can be palpable at the postero-lateral surface of the testis

B. has 3 parts; head, body, and tail

C. new batches of sperms stay in the epididymis around 2 days for maturation

D. shares the same blood supply of the testis

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4

Which statement is true about the female urethra?

A. harder to catheterize when compared to the male urethra

B. 4 inch long

C. opens into the vestibule below the clitoris

D. gets wider at the post-menopausal age

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4

What is false concerning the urinary bladder anatomy?

A. as it distends, it peels off the peritoneum from the abdominal wall

B. the interureteric ridge is located between the 2 ureteric orifices and the uvula vesicae

C. Waldeyer`s sheath covers only the distal ureter and forms the deep trigone

D. in adults, it is percussible over the abdomen when contains at least 150 ml

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4

Which drug does NOT result in urinary retention?

A. terazosin, antihypertensive

B. benzodiazepines, psychotropic medicine

C. levodopa, anti-Parkinsonism medicine

D. brimonidine, glaucoma eye drops

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4

The majority of circulating testosterone is:

A. bound to sex hormone-binding globulin

B. free

C. bound to α1-antichymotrypsin

D. bound to albumin

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4

What is the number of bacteria per high-power field microscopy that matches colony counts of 100,000/mL?

A. 100

B. 50

C. 10

D. 5

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4

Renal blood flow is autoregulated by:

A. sympathetic nervous system

B. parasympathetic nervous system

C. urinary output

D. afferent arteriolar resistance

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4

Regarding renal ectopia, usually, the adrenals:

A. are cross ectopic

B. are at their normal position

C. travel with the kidneys

D. undergo ischemic atrophy

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4

What vessels are located in the prostate neurovascular bundle?

A. Watson plexus

B. capsular arteries and veins

C. inferior vesical and midrectal vessels

D. Santorini plexus

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4

From where does the main parasympathetic efferent innervation to the pelvic plexus arise?

A. S1

B. S2-S4

C. T11-L2

D. L3-S1

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4

Which statement explains the first event in the micturition reflex?

A. opening of internal bladder sphincter

B. fall in urethral pressure

C. rise in intravesical pressure

D. cessation of sphincter EMG activity

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4

What do the specialized cells, at the juxtaglomerular apparatus, produce?

A. erythropoietin

B. renin

C. angiotensin I

D. angiotensinogen

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4

Which type of renal tubular acidosis (RTA) is more likely to form renal stones?

A. type 1

B. type 2

C. type 3

D. type 4

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4

All of the following conditions are related to obesity syndrome, EXCEPT:

A. super fertility

B. increase aromatization reaction

C. increase resistance to circulating insulin

D. sleep apnea

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4

In which organelle in Leydig cell does testosterone synthesis take place?

A. ribosome

B. mitochondria

C. Golgi apparatus

D. endoplasmic reticulum

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4

Which agent should be avoided during living-related donor nephrectomy?

A. ice slush

B. heparin

C. norepinephrine

D. methylene blue

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4

Which anomaly might accompany horseshoe kidneys?

A. ureteropelvic junction obstruction

B. ureterocele

C. ureteral reflux

D. ureteral atresia

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4

By which of the following structures, do the fused lower poles of hoarseshoe kidneys get trapped during embryologic ascent?

A. inferior mesenteric artery

B. superior mesenteric artery

C. celiac artery

D. common iliac artery

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4

Which of the following does asymptomatic hematuria workup include?

A. cystoscopy

B. CT urography

C. urine cytology

D. all of the above

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4

Which statement is NOT related to Klinefelter syndrome?

A. sterility is the rule

B. has a considerable short life span

C. treatment requires testicular microdissection and sperm extraction

D. 47 XXY karyotype

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4

What is the appropriate intravenous maintenance fluid for a 16 kg girl?

A. 43 ml/hr of normal saline

B. 78 ml/hr of ¼ normal saline

C. 69 ml/hr of ½ normal saline

D. 54 ml/hr of ¼ normal saline

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4

When should a 70 yrs. man with 40 ml prostate volume, and total PSA of 2.0 ng/ml, go for a prostate biopsy?

A. if PSA reading had exceeded 2.7 ng/ml over 12 months

B. if free PSA reading was less than 0.4 ng/ml

C. if total PSA reading was greater than 8 ng/ml

D. any of the above

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4

Which of the following contributes second to the seminal fluid by volume?

A. seminal vesicles

B. the prostate

C. testes

D. bulbourethral glands

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4

Which of the following is NOT a part of the urogenital diaphragm structures?

A. perineal membrane

B. deep transverse perineal muscle

C. urethral sphincter

D. Camper`s fascia

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4

Which of the following is NOT a sex accessory tissue?

A. the prostate gland

B. seminal vesicles

C. epididymi

D. bulbourethral glands