Endocrine systems Flashcards
Endocrine systems:
networks of glands and organs that control and maintain the body
Endocrine systems rely on…
hormones (“messenger of the body”)
Examples of hormones:
Growth hormone
Insulin
Estrogen
Testosterone
Melatonin
Dopamine
Hormones are produced by…
glands and organs in the body
Hormones are transported through the body by…
blood or fluid around cells
Hormones reach cells through receptors called…
membranes and are often controlled by negative feedback loops
What phylum’s have hormones or “hormone-like” molecules but lack an endocrine system?
Poriferans, Cnidaria, Ctenophore, and Placazoa
In cnidaria what produces some hormone-like molecules?
nerve cells
Endocrine systems are found throughout…
Bilaterian invertebrates (e.g. annelids, mollusks, insects, crustaceans)
Insects use hormones to control…
molting and transitioning to different life stages.
Endocrine systems in arthropods have received…
considerable attention
Prothoracicotropic hormone (PTTH):
stimulates the prothoracic gland
Ecdysone:
produced by prothoracicotropuc gland and initiates molting
Juvenile Hormone (JH):
released by the corpora allata, maintains immature tissues, suppresses expression and development of tissues
Thyroid glands produce…
hormones associated with growth
