(a) What is puberty ?
(b) Describe in brief the functions of the following parts in the human male reproductive system :
(i) Testes
(ii) Seminal vesicle
(iii) Vas deferens
(iv) Urethra
(c) Why are testes located outside the abdominal cavity ?
a) Puberty is the process of physical changes in the body through which a child's body matures and turns into an adult body and becomes capable of sexual reproduction.
b) (i) Testes: It is the male gonad and part of the genital tract. It is the organ that produces sperms and male sexual hormone, testosterone.
(ii) Seminal vesicle: It secretes fluids onto the sperms for ease of transport and nutrition
(iii) Vas deferens: It is a tube transporting spermatozoa from the epididymis to the prostate part of the urethra.
(iv) Urethra: It brings the urine from the kidneys to the urinary bladder
c) because the temperature of the testicles needs to be cooler than the inside of the body.