When do the testis descend into the scrotum in normal condition? ()
A: Fetal development
B: Infancy
C: Puberty
D: Adulthood
A: Fetal development
B: Infancy
C: Puberty
D: Adulthood
举一反三
- （ ）is the basic materials of fetal growth and development
- （ ）is the basic materials of fetal growth and development
- 16. There is a transitional period between adolescence and adulthood, when people do not want to take responsibility for now.
- Which are the benefits of seeing emerging adulthood as a normal stage of life?
- Male genitalia do not include A: Penis B: Scrotum C: Prostate gland D: Perineum