Hormones are chemical messengers that are produced by various glands in the endocrine system. These glands release hormones into the bloodstream, where they travel to target tissues and organs to regulate various bodily functions.
Types of Hormones
There are several types of hormones, including:
Steroid hormones: These hormones are derived from cholesterol and include hormones such as estrogen, progesterone, and testosterone.
Peptide hormones: These hormones are made up of chains of amino acids and include hormones such as insulin and growth hormone.
Amino acid-derived hormones: These hormones are derived from amino acids and include hormones such as epinephrine and norepinephrine.
Functions of Hormones
Hormones play a crucial role in regulating various bodily functions, including:
History and Nature of Science: A student should understand the history and nature of science. A student who meets the content standard should:
Develop an understanding that historical perspectives of scientific explanations demonstrate that scientific knowledge changes over time, building on prior knowledge.
Develop an understanding that scientific knowledge is ongoing and subject to change as new evidence becomes available through experimental and/or observational confirmation(s).