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Teratospermia is a condition characterized by the presence of sperm with abnormal morphology that affects fertility in males. Sperm morphology is unique among the known cells and 3 major parts can be...

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Sperm and pyriform head

   18.05.2018  5 Comments

An important part of any breeding soundness exam is an evaluation of sperm morphology. In the most fundamental case, the size and shape of the head, midpiece and tail are examined. Additional information can be gained by evaluating integrity of the acrosome and sperm membranes. Sperm from different species vary in size and shape. Bull and human sperm, for example, have paddle-shaped heads, rodent sperm have hook-shaped heads, and the heads of chicken sperm are spindle-shaped and almost difficult to distinguish from the midpiece.

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  • Arch Androl. Jul-Aug;48(4) Pyriform head: a frequent but little- studied morphological abnormality of sperm. Rousso D(1), Kourtis A, Mavromatidis G....
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  • The significance of pyriform (pear-shaped) sperm heads in sperm morphology. N.H Dubin. x. N.H Dubin. Search for articles by this...
  • The strict criteria of sperm morphology (e.g. Kruger's criteria) use the examination...
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5 thoughts on “Sperm and pyriform head

  1. Sperm morphology — the size and shape of sperm — is one factor that's examined as part of a semen analysis to evaluate male infertility.

  2. It is therefore unreasonable to hope for tests that will indicate with absolute certainty that a man will be fertile.

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