Fleshy folds of tissue which extends down the mons pubis and surrounds the vaginal opening is called
Labia minora
Labia majora
Hymen
Clitoris
The placental barrier between the maternal and foetal blood is minimum in
$A$ : The first sign of growing foetus may be noticed by listening to the heart sound through the stethoscope.
$R$ : By the end of second month of pregnancy, the foetus develops limbs and digits.
Seminal plasma in humans is rich in
Cells of leydig are found in
Which of the following provides nutrition to sperm?