The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands. The hypothalamus and pituitary gland are neuroendocrine organs.
A newspaper lead (or lede if you prefer) can do its job in one sentence, but with few exceptions, a paragraph will contain more than one sentence. The OWL site, aimed at college students, suggests a length of from three to five or more sentences.
That then gives 16 paragraphs (at 100 words each) to as many as 40 paragraphs (at 40 words each).*. * For online and offline text, professional writers have long operated on the rules of thumb of 20 to 25 words per sentence, and 2 to 4 sentences per paragraph (or 40 to 100 words per paragraph).