What is the name of the gland labeled E?

What is the name of the gland labeled B?

What is the name of the gland labeled I?

What is the name of the gland labeled J?

The endocrine system performs a variety of functions essential to life processes. What is the function of the structure labeled H in the figure above?
a.
It produces sex hormones
c.
It produces insulin and glucagon
b.
It produces thyroxine
d.
It produces thymosin