The location of the testes and epididymides in the scrotum?

Calcitonin
a. promotes the absorption of calcium from the gastrointestinal tract.
b. promotes osteoclast activity in the bones.
c. reduces calcium excretion by the kidneys.
d. reduces extracellular calcium ion levels.
e. increases blood calcium levels.

The location of the testes and epididymides in the scrotum
a. allows more room for other organs in the abdominal cavity.
b. keeps these organs close to the penis.
c. provides a temperature that is suitable for normal sperm development.
d. keeps them isolated from the accessory glands of the system.
e. helps to protect them.