Scrotum

Looks like

A loose, wrinkled pouch of skin and thin muscle holding the testes below the body.

What it does

Keeps the testes a couple of degrees cooler than the rest of you.

Keeping it well

A new lump needs checking; swelling that glows in a torch beam is fluid, but sudden pain is a twist and an emergency.

Related conditions

• Bone metastases and spinal cord compression
• Epididymitis and orchitis
• Hydrocele
• Testicular torsion
• Undescended testis (cryptorchidism)
• Varicocele