Which hormone of the pituitary gland causes contraction of uterine muscles during childbirth and stimulates milk ejection from the mammary glands in females?

State whether the following statement is true or false: The pituitary gland secretes growth hormone.

What are voluntary and involuntary actions? Give one example of each.

Name two tissues that provide control and coordination in multicellular animals.

Give a reason to explain why:
$(i)$ Adrenaline helps in dealing with emergency situations?
$(ii)$ Secretions of growth hormone should be specific in the human body?
$(iii)$ Some patients of diabetes are treated by giving injections of insulin?

The spinal cord originates from: