Draw a labelled diagram to show interrelationship of four accessory ducts in a human male reproductive system.

OR

Draw a sectional view of the human ovary showing the different stages of developing follicles, corpus luteum and ovulation.

The accessory ducts in a human male reproductive system are:

•rete testis

•vasa efferentia

•epididymis

•vas deferens

Note: You may draw and label just the four ducts too and draw the diagram like this:

OR

•The process of formation of a mature female gamete is called oogenesis.

•The ovum/egg/oocyte is arrested during the first meiotic division as a primary oocyte.

•The primary follicles get surrounded by more layers of granulosa cells and a new theca and called secondary follicles.

•The secondary follicle soon transforms into a tertiary follicle which is characterised by a fluid filled cavity called antrum.

•At this stage that the primary oocyte within the tertiary follicle grows in size and completes its first meiotic division forming the secondary oocyte.

•The tertiary follicle further changes, matures and forms the Graafian follicle.

•The secondary oocyte forms a new membrane called zona pellucida surrounding it.

•The Graafian follicle now ruptures to release the secondary oocyte from the ovary. This process is known as ovulation.