The Reproductive System
Lying in the sof connective tissue surrounding the sem-
iniFerous tubules are the
interstitial endocrine cells
(±igure 27.3c). Tese cells produce andro-
gens (most importantly
), which they secrete into
Head of epididymis
Body of epididymis
Tail of epididymis
Duct of epididymis
cells in tubule
Structure of the testis. (a)
Partial sagittal section through the testis and
epididymis. The anterior aspect is to the right. (For a related image, see
A Brief Atlas of the Human
, Figure 73).
External view of a testis from a cadaver; same orientation as in (a).
Seminiferous tubule in cross section (270
). Note the spermatogenic (sperm-forming) cells in the
tubule epithelium and the interstitial endocrine cells in the connective tissue between the tubules.
ĭ-mis), which hugs the external
testis surFace posteriorly. Te immature sperm pass through the
head, the body, and then move into the tail oF the epididymis,
where they are stored until ejaculation.