Study the following statements.

a) Ejaculatory ducts lead into prostatic urethra.

b) Secretions of bulbourethral glands help in the lubrication of the penis.

c) The testis is covered by a dense covering called tunica albuginea.

d) Each seminiferous tubule is lined on its inside by male germ cells and Sertoli cells.

Which of the above are correct?

All the statements are correct.

• The ejaculatory ducts are responsible for transporting sperm and seminal fluid from the seminal vesicles into the prostatic urethra, where they mix with other components of semen.
• The bulbourethral glands, also known as Cowper's glands, produce a clear, viscous fluid that is released prior to ejaculation. This fluid helps to lubricate the urethra and neutralize any acidic urine residues, creating a more suitable environment for sperm to travel through.
• The tunica albuginea is a tough, fibrous covering that surrounds the testis. It provides structural support and protection to the testis.
• Seminiferous tubules are the functional units of the testis, where spermatogenesis (sperm production) occurs. They are lined by two main types of cells: male germ cells (which undergo various stages of spermatogenesis) and Sertoli cells (which provide nutritional support and create the microenvironment necessary for sperm development).