Veins of the brain empty into
A) coronary sinuses.
B) dural sinuses.
C) the cerebral arterial circle.
D) external jugular veins.
E) vertebral veins.
Question 2
Sperm release ________ to break down the bonds between adjacent follicle cells surrounding the oocyte.
A) relaxin
B) hyaluronidase
C) calcium
D) zonal inhibiting proteins
E) glucose