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Author Question: Give three examples and their description of types of testicular cancer. What will be an ideal ... (Read 1549 times)

cool

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on: Jun 25, 2018
Give three examples and their description of types of testicular cancer.
 
  What will be an ideal response?

Question 2

Describe the physiology of penile erection.
 
  What will be an ideal response?


djpooyouma

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Reply #1 on: Jun 25, 2018
Answer to Question 1

Seminoma: a type of a malignant tumor of the testis
Teratoma: malignant tumor comprised of several different types of malignant tissue
Embryonal cancer: malignant cells resemble rapidly growing trophoblastic tissue
Choriocarcinoma: malignant proliferation of trophoblastic tissue

Answer to Question 2

1 . Stimulation of the parasympathetic neurons on sexual arousal causes the release of the neurotransmitter nitric oxide.
2 . Nitric oxide diffuses into the smooth muscles, causing the release of cGMP that causes relaxation and dilatation of the smooth muscles of the penile arteries and trabeculae within the corpora cavernosa.
3 . Blood under pressure fills the cavernous bodies.
4 . The increased arterial blood flow and pressure compress the draining veins, preventing the outflow of blood and causing the penis to become rigid and erect.
5 . cGMP is broken down by the phosphodiesterase enzyme.


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cool

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Reply #2 on: Jun 25, 2018
Correct answers!


djpooyouma

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Reply #3 on: Jun 25, 2018
Great! Please up vote :D


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