One of the functions of the testes is to produce sperm. The other function of the testes is to produce hormones, namely testosterone.
The gonads are the testes and ovaries. Both also have endocrine (gland) functions.
production of male hormone testosterone; and production of sperm
Produce sperm and to give you extreme pain when a ball comes flying in!
Addressing and multiplexing
False. Two testes in normal.
lift for flight and conserving heat
You have a primary and secondary tank. Certain air functions of the truck use the primary and others use the secondary tank.
From what i know they are used in the cccell membrane and for hormones
The testes & the ovaries.
directing and controlling
raphe