Assertion: testicular vein's valve | /r/CapableOf | obstruct normal blood flow
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Source sentences:
text: the network of veins leaving the testis which join to form the testicular vein; varicoceles appear bluish through the scrotum and impart a bag of worms-like sensation to palpation Clinical Varicoceles are caused by incompetent valves in spermatic cord veins; abnormal valves obstruct normal blood flow causing a backup of blood, resulting in venous dilation; varicoceles usually develop slowly and may be asymptomatic; incidence is higher in ♂ age 15 and 25; varicoceles are linked to infertility in 40% of ♂ treated for infertility; abrupt appearance of a varicocele in older ♂ may be caused by a renal tumor affecting the renal vein and altering the blood flow through the spermatic vein