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The testicles or testes (singular testicle), are the male generative glands in animals. Male mammals have two testicles, which are often contained within an extension of the abdomen called the scrotum.
In mammals, the testes are located outside of the body, as they are suspended by the spermatic cord and within the scrotum. This is due to the fact that spermatogenesis in mammals is more efficient at a temperature somewhat less than the core body temperature (37°C or 98.6°F for humans). The cremasteric muscle is part of the spermatic cord. When this muscle contracts, the cord is shortened and the testicle is moved closer up toward the body, which provides slightly more warmth to maintain optimal testicular temperature. When the temperature needs to be lowered, the cremasteric muscle relaxes and the testicle is lowered away from the warm body and are able to cool. This phenomenon is known as the cremasteric reflex. It also occurs in response to stress (the testicles rise up toward the body in an evolutionary effort to protect them in a fight) and they also retract during orgasm.
Animals other than mammals do not have externalized testicles. Birds, despite having very high core body temperatures have internal testes: it was once theorized that birds used their air sacs to cool the testes internally, but later studies revealed that birds' testes function at core body temperature.*
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Testes Conditions and Diseases
A testicular exam to end my day. Fun
omgwtfjen (Jen Bayley) Sun, 20 Dec 2009 00:35:07 -0000
A testicular exam to end my day. Fun
Testicular RT @JosephBananas @MissZindzi I heard you had fingernail cancer... @ctron164
MissZindzi (Zindzi) Sat, 19 Dec 2009 22:38:49 -0000
Testicular RT @JosephBananas @MissZindzi I heard you had fingernail cancer... @ctron164
Testicular Elephantitis / http://bit.ly/4X9GPG
brandonrofl (Brandon Elliott) Sat, 19 Dec 2009 22:22:55 -0000
Testicular Elephantitis / http://bit.ly/4X9GPG
Ask me anythingif you have the Testicular fortitude http://formspring.me/mikaelstefanow
Metzger_meister (mikael stefanow) Sat, 19 Dec 2009 21:39:00 -0000
Ask me anythingif you have the Testicular fortitude http://formspring.me/mikaelstefanow
I have testicular gout! joy!
SilverStreakGTI (Nathan Welch) Sat, 19 Dec 2009 19:43:18 -0000
I have testicular gout! joy!
@Dragoneer Wearing some form of pants and keeping one's balls at least a foot away from the snow usually prevents any testicular frostbite..
YiffyGriffy (YiffyGriffy) Sat, 19 Dec 2009 19:42:36 -0000
@Dragoneer Wearing some form of pants and keeping one's balls at least a foot away from the snow usually prevents any testicular frostbite..
About.com: Testicular Cancer - Links-based presentation.
Meta Description: [ In this cancer resource, you will find information about symptoms of several types of cancer, cancer causes, treatment and more. Cancer Prevention and risk factors such as HPV, smoking, and other carconigens are discussed as well. ]
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ACOR: Testicular Cancer Glossary - A practical resource.
Meta Description: [ The Testicular Cancer Resource Center TC Dictionary - Down to earth definitions of confusing terms. ]
AFP: Testicular Cancer - Journal article from the American Family Physician.
BMJ: Managing testicular cancer - Review article by DP Dearnaley in the British Medical Journal.
BUPA: Testicular Cancer - Fact sheet from this UK entity about the condition including causes, symptoms and treatment.
Meta Description: [ There are several types of testicular cancer, most common are seminoma and teratoma - BUPA health factsheet ]
CancerResearch UK: Testicular - Charity organization providing information on prevention, diagnosis and treatment, as well as details on fundraising.
Meta Description: [ This section of CancerHelp UK is about testicular cancer, its diagnosis and treatment. It includes information on teratoma and seminoma. ]
CancerWeb: Screening for Testicular Cancer - Information from the U.S. National Cancer Institute aimed at the professional level.
Check-Em - UK-based resource aimed at the prevention, diagnosis and treatment of testicular and prostate cancer.
Checkyourballs - A UK-based awareness resource by Mark Bagnall, a survivor of testicular cancer.
Meta Description: [ Welcome to checkyourballs, the cancer awareness website from Mark Bagnall ]
Don't Be A Schmuck: Testicular Cancer - Aimed at young men to help them understand more about the condition including signs, symptoms, statistics and the value of self-examination.
Meta Description: [ What is testicular cancer? find information on detection, diagnosing, treatment, and other useful articles ]
eMedicine Health: Cancer of the Testicle - Consumer health resource center providing information on causes, symptoms and treatment.
Meta Description: [ Testicular cancer is an abnormal growth of cells in the testicles. The testicles are the male reproductive organs (gonads), where sperm are produced.
The 2 small glands lie in a ... ]
eMedicine Health: Testicular Self-Exam - Provides information about causes and symptoms of testicular cancer as well as outlining a procedure for early detection.
Meta Description: [ A testicular self-examination (TSE) is useful in the detection of cancer of the testicles. Testicular cancer is the most common solid tumor found in males age 20-34 years. If detected ... ]
FDA: Testicular Cancer Survival - Overview information from the U.S. Food and Drug Administration.
Meta Description: [ In men aged 15 to 34, testicular cancer ranks as the most common cancer. ]
Justin's Story - Also includes general information including signs and symptoms of testicular cancer.
Meta Description: [ Klinefelter's syndrome.gonadal. dysgenesis.mumps.Sertoli cell tumors.Leydig cell tumors.Blood tests measure HCG.germ cell tumors ]
Mayo Clinic: Testicular Cancer - Description of disease including symptoms, causes, risk factors, diagnosis, treatment and coping strategies.
Meta Description: [ Testicular cancer is a common cancer in men and, when detected early, highly treatable.
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MedicineNet: Testicular Cancer - Consumer health information discusses causes, symptoms, diagnosis and treatment.
Meta Description: [ Learn about testicular cancer symptoms, which include a painless lump or swelling in a testicle, testicle or scrotum pain, a dull ache in the abdomen, back, or groin, and a feeling of heaviness in the scrotum. Treatment for cancer of the testicles depends on the type of cancer (seminoma or nonsem... ]
NCI: Testicular Cancer - Questions and Answers - This fact sheet provides information about the treatment, detection, risk factors, and prevention of testicular cancer.
Meta Description: [ This fact sheet provides information about the treatment, detection, risk factors, and prevention of testicular cancer. National Cancer Institute Fact Sheet 6.34 ]
Orchid Cancer Appeal - A UK charity devoted to research and treatment in men's cancers.
Meta Description: [ Orchid is dedicated to funding research into diagnosis, prevention and treatment of prostate and testicular cancer as well as promoting awareness of these previously neglected diseases. Registered Charity No. 1080540. ]
Peter Croft Music Man - Memorial for Peter Croft who died of testicular cancer in February, 2000.
SoYouWanna Perform a Testicular Self-Exam? - Full-length article aimed at instruction.
Meta Description: [ SoYouWanna perform a testicular self-examination? There are very few physical sensations that match the thunderous pain and awesome power of a swift kick to the testes. Everything... ]
TC-Cancer - Offers information and support services for testicular cancer, addressing such topics as signs, symptoms, diagnosis and treatment.
Meta Description: [ The Testicular Cancer Information, Resource and Support Center. Developed to help patients with testicular cancer and their family members. ]
Testicular Cancer - General information including topics of diagnosis and treatment. Includes a cancer diary, checklist and collection of related jokes.
Meta Description: [ Information about testicular cancer. ]
Testicular Cancer and the Road to Recovery - Michael Merrill shares his experiences as he battles the disease.
UrologyChannel: Testicular Cancer - Gives an overview of the subject.
Meta Description: [ Although it accounts for only 1% of cancers in men, testicular cancer is the most common cancer in men between the ages of 20 and 34. If the cancer is detected early, there is a high cure rate. ]
What You Need to Know about Testicular Cancer - Online brochure from the U.S. National Cancer Institute on symptoms, diagnosis, treatment and support.
Meta Description: [ An overview of cancer detection, symptoms, diagnosis, and treatment. NIH Publication No. 06-1566 ]
Yahoo Health: Testicular Cancer - Information including basic facts, risks, causes, diagnosis, prevention and treatment.
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