zona pellucida

Examples of zona pellucida in the following topics:

• Fertilization

  • In mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida.
  • When a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reaction, take place.

• Adrenal Glands

  • These layers form three distinct regions: an outer zona glomerulosa that produces mineralocorticoids; a middle zona fasciculata that produces glucocorticoids; and an inner zona reticularis that produces androgens, which are sex hormones that promote masculinity.