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What is the difference in function between Cowper's gland and the seminal vesicle?

Answer 1

Secretion of Cowper's gland is not part of semen.

Seminal vesicles are paired glands in male which secrete bulk of the semen (70 to 80%). Vesicles add food for permatozoa in semen, i.e. fructose.

Cowper's glands are also termed bulbourethral glands. Cowper's glands start secreting a sticky, lubricating fluid before actual ejaculation of sperms and semen. The secretion is alkaline, which helps to rinse the acidity from male urethra. Thus secretion from Cowper's glands, helps in penetration by providing lubrication and also offers protection to sperms from acidic environment of male urethra.

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Answer 2

Eva Anselmo

Cowper's glands release a clear, viscous fluid that coats the urethra and balances any residual urine acidity. Seminal vesicles release a fluid that is high in fructose, which gives sperm energy, and rich in proteins and prostaglandins, which promote sperm motility and fertility.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.