Fig. 13.4 Structure of the testes. (Sources of images and videos below. Used with permission.)

Videos

“The Testes”

https://blausen.com/en/video/the-testes/

“Testicles Secrete Testosterone”

https://blausen.com/en/video/testicles-secrete-testosterone/

“Male Reproductive Hormones (Positive Feedback)”

https://blausen.com/en/video/male-reproductive-hormones-positive-feedback/

NOTE: Though hormones from the pituitary gland (FSH and LH) stimulate testosterone production (a positive effect on the testes), testosterone inhibits the production of the pituitary hormones FSH and LH. Thus overall, this is a negative feedback system, which maintains homeostasis of testosterone levels.

“Seminiferous Tubules”

https://blausen.com/en/video/seminiferous-tubules/

“Accessory Glands”

https://blausen.com/en/video/accessory-glands/

“Anatomy of a Spermatozoon”

https://blausen.com/en/video/anatomy-of-a-spermatozoon/

© Copyright 2020: Augustine G. DiGiovanna, Ph.D., Salisbury University, Maryland
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Sources of images and videos. Used with permission.

https://commons.wikimedia.org/wiki/File:Figure_28_01_03.JPG

Description English: Illustration from Anatomy & Physiology, Connexions Web site. http://cnx.org/content/col11496/1.6/, Jun 19, 2013.

Date 2 May 2013, 20:37:48

Source Anatomy & Physiology, Connexions Web site. http://cnx.org/content/col11496/1.6/, Jun 19, 2013.

Author OpenStax College

Other versions File:Figure 28 01 03 gl.jpg (Galician version), File:Figure 28 01 03-ar.jpg (Arabic version)

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