InterviewSolution
| 1. |
Given below is a diagram of the lateral section of a testis of a man. Study the same and answer the questions that follow :(i) Label the parts numbered 1 to 4 of the diagram. (ii) State the functions of the parts labelled 1 and 3. (iii) What is the significance of the testes being located in the scrotal sac outside the abdomen ? (iv) What is the role played by-the inguinal canal ? (v) What is semen ? |
|
Answer» (i) (1) Seminiferous tubules. (2) Testicular lobes (3) Epidydymes (4) Sperm duct/Vas deferens (ii) Functions of Part 1 (Seminiferous tubules): The cells of seminiferous tubules keep on dividing and produce sperms by the process called spermatogenesis. Function of Part 3 (Epidydymes): (i) It helps in transportation of sperms from seminiferous tubules into vas deferens. (ii) It also helps the sperm to attain maturity. (iii) Testis are located in scrotal sac because it provides 2-3 °C less temperture than the body temperature, which is required for maturation of sperms. (iv) Inguinal canals facilitates the movement of testis from abdominal cavity into scrotal sac or vice-versa. (v) Semen is an alkaline combination of sperms and seminal fluid. |
|