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Related Concept Videos

Spermatogenesis01:41

Spermatogenesis

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Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
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Spermatogenesis01:22

Spermatogenesis

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Spermatogenesis is a complex process that involves the development of sperm cells from undifferentiated stem cells in the seminiferous tubules of the testes. The process is essential for the production of mature and functional sperm cells that are capable of fertilizing an egg.
The process of spermatogenesis can be divided into mitosis, meiosis, and spermiogenesis. During mitosis, the spermatogonia or stem cells divide to produce two identical daughter cells, type A and B spermatogonia. Type-A...
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Sperm Transport01:15

Sperm Transport

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The journey of sperm from its origin to the point of ejaculation begins within the seminiferous tubules of the testis. Here, Sertoli cells produce fluid that propels non-motile sperm through a series of conduits, starting with the straight tubules leading to the rete testis. This interconnected network of tubules acts as the initial pathway for sperm, guiding them into the efferent ductules and then into the epididymis for maturation.
The maturation phase occurs in the epididymis, where sperm...
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ATP Energy Storage and Release01:31

ATP Energy Storage and Release

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ATP is a highly unstable molecule. Unless quickly used to perform work, ATP spontaneously dissociates into ADP and inorganic phosphate (Pi), and the free energy released during this process is lost as heat. The energy released by ATP hydrolysis is used to perform work inside the cell and depends on a strategy called energy coupling. Cells couple the exergonic reaction of ATP hydrolysis with endergonic reactions, allowing them to proceed.
One example of energy coupling using ATP involves a...
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Sperm Structure and Semen Composition01:22

Sperm Structure and Semen Composition

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During ejaculation, males release around 2-5 milliliters of semen, which is a complex mixture of mature sperm and various fluids produced by accessory glands. The mature sperm cells measure approximately 60 micrometers in length and consist of a head, neck, midpiece, and tail. The head is flattened and tapered, measuring about 4 to 5 micrometers in length. It contains a nucleus with condensed chromosomes and an acrosome, a cap-like structure filled with enzymes essential for penetrating the...
12.9K
Adrenergic Receptors: ɑ Subtype01:31

Adrenergic Receptors: ɑ Subtype

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Adrenoceptors are classified into α and ꞵ classes based on their potencies to catecholamine agonists. α-adrenoceptors show the following order of catecholamine potency:
Adrenaline ≥ Noradrenaline >> Isoprenaline
α-adrenoceptors are further divided into α1 and α2-adrenoceptors.
α1-Adrenoceptors: These receptors are located postsynaptically on the effector organs and cause constriction of smooth muscle mediated by activation of phospholipase...
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Related Experiment Video

Updated: Mar 11, 2026

Medium-throughput Screening Assays for Assessment of Effects on Ca2+-Signaling and Acrosome Reaction in Human Sperm
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Medium-throughput Screening Assays for Assessment of Effects on Ca2+-Signaling and Acrosome Reaction in Human Sperm

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Adenosine in sperm physiology.

Ilaria Bellezza1, Alba Minelli1

  • 1Dipartimento di Medicina Sperimentale, Università di Perugia, Polo Unico Sant'Andrea delle Fratte, Piazzale Gambuli, 06132 Perugia, Italy.

Molecular Aspects of Medicine
|November 29, 2016
PubMed
Summary
This summary is machine-generated.

Adenosine and its receptors play a crucial role in sperm function and fertility. This review explores their impact on spermatogenesis and the acquisition of sperm fertilizing capacity.

Keywords:
Acrosome reactionAdenosine receptorsCapacitationEpididymal maturationSpermatogenesis

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Using an Extracellular Flux Analyzer to Measure Changes in Glycolysis and Oxidative Phosphorylation during Mouse Sperm Capacitation
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Phosphopeptide Analysis of Rodent Epididymal Spermatozoa
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Area of Science:

  • Reproductive Biology
  • Molecular Endocrinology
  • Sperm Physiology

Background:

  • Adenosine triphosphate (ATP) and cyclic adenosine monophosphate (cAMP) are established regulators of sperm function.
  • The specific roles of adenosine and its receptors in male reproduction remain incompletely understood.
  • Adenosine presence in the male reproductive tract and on spermatozoa suggests functional significance.

Purpose of the Study:

  • To review the current literature on the role of adenosine and adenosine receptors in male reproductive processes.
  • To elucidate the effects of adenosine signaling on spermatogenesis and sperm fertilizing capacity.

Main Methods:

  • Extensive literature review.
  • Synthesis of existing research findings.

Main Results:

  • Adenosine and its receptors are implicated in key aspects of sperm physiology.
  • Evidence suggests a role in spermatogenesis and the development of fertilizing ability.

Conclusions:

  • Adenosine signaling is vital for male fertility.
  • Further research is warranted to fully elucidate the mechanisms of adenosine action in sperm function.