The testes (sing. "testis") are male-only endocrine glands in the human body. They are located in the scrotum.
Endocrine glands differ from "exocrine" glands in that exocrine glands have ducts (so may be referred to as "ducted") whereas endocrine glands do not have ducts (and so may be referred to as "ductless").
The main functions of the testes are the production of spermatoza and the secretion of male hormones."Spermatoza" is the plural form of the noun "spermatozoon", or (in more common non-clinical use) "sperm". Spermatoza develop in long convoluted "seminiferous tubules" of the testes that also contain sertoli cells which nourish the developing spermatoza.
The testes secret androgen hormones, which include testosterone and androsterone.
For a diagram indicating the locations within the body of each of the endocrine glands, see Endocrine Glands of the Human Body.
- Introduction to the Endocrine System
- What is a hormone ?
- Water Soluble Hormones vs Fat Soluble Hormones
- Triggers for Hormone Release
- Hormone Regulation Feedback Mechanism
- Major Glands of the Endocrine System
- The Pituitary Gland
- The Adrenal Glands
- Non-endocrine tissues that release hormones
- Conditions of the Endocrine System