A nursing student studying obstetrics asks the faculty, "How does the sperm get so much energy to swim up the fallopian tubes?"
The instructor responds based on which pathophysiological principle?
A)
Usually the ejaculation is so powerful that it propels the sperm far up into the fallopian tubes.
B)
Fructose is secreted by the seminal vesicles and provides energy for motility of the sperm.
C)
The seminal vesicles secrete fluid for the semen, and they can secrete catecholamines that energize the sperm.
D)
Estrogen, which is being secreted when the ova are ripe and ready for penetration, assists by attracting the sperm in the right direction.
Ans:
B
Feedback:
The seminal vesicles consist of two highly tortuous tubes that secrete fluid for the semen. Each of the paired seminal vesicles is lined with secretory epithelium containing an abundance of fructose, prostaglandins, and several other proteins. The fructose secreted by the seminal vesicles provides the energy for sperm motility.
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