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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Is It Normal For Only One Testicle To Move When Abdomen Is Tightened?

I recently got hit in the left testicle from a popup softball. I iced it for a couple days and now its just a bit tender but I notice the left testicle is hanging alot lower and when I tighten my lower abdomen on the right testicle rises but the left just stays there. Is that normal?
Mon, 29 Dec 2014
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Radiologist,  's  Response
Hi,
Thanks for writing in.

Testis are originally intra abdominal organs and descend to the scrotum after birth. When you tighten the abdominal; muscles or stroke the thigh region, the testis can get pulled up. This is due to a reflex mechanism involving the nerves of the autonomic system and called cremasteric reflex. By tightening the lower abdomen there is contraction of the cremasteric muscle which then causes pulling up of the testis on one side. Similarly when the inner thigh is stroked, sensory fibers of the femoral branch of the genitofemoral nerve and the ilioinguinal nerve are stimulated. These synapse in the spinal cord and activate the motor fibers of the genital branch of the genitofemoral nerve which causes the cremaster muscle to contract and elevate the testis.
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Is It Normal For Only One Testicle To Move When Abdomen Is Tightened?

Hi, Thanks for writing in. Testis are originally intra abdominal organs and descend to the scrotum after birth. When you tighten the abdominal; muscles or stroke the thigh region, the testis can get pulled up. This is due to a reflex mechanism involving the nerves of the autonomic system and called cremasteric reflex. By tightening the lower abdomen there is contraction of the cremasteric muscle which then causes pulling up of the testis on one side. Similarly when the inner thigh is stroked, sensory fibers of the femoral branch of the genitofemoral nerve and the ilioinguinal nerve are stimulated. These synapse in the spinal cord and activate the motor fibers of the genital branch of the genitofemoral nerve which causes the cremaster muscle to contract and elevate the testis.