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The Usual Duration of the Typical Human Sleep Cycle Is

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The usual duration of the typical human sleep cycle is


Definitions:

Zona Pellucida

A thick, glycoprotein layer surrounding the plasma membrane of an oocyte, important for fertilization in mammals.

Testosterone

A steroid hormone responsible for the development and maintenance of male physical characteristics.

Interstitial Cells

Cells located among the functional tissues of an organ, often involved in the production of hormones or supporting structures.

Primary Oocyte

An immature female reproductive cell that undergoes division to form an ovum and secondary oocyte during ovulation.

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