A steroid is a type of organic compound that contains a characteristic arrangement of four cycloalkanerings that are joined to each other. Examples of steroids include the dietary fat cholesterol, the sex hormones estradiol and testosterone, and the anti-inflammatory drug dexamethasone. The core of steroids is composed of twenty carbon atoms bonded together that take the form of four fused rings: threecyclohexane rings (designated as rings A, B, and C in the figure to the right) and one cyclopentane ring (the D ring). The steroids vary by the functional groups attached to this four-ring core and by the oxidation state of the rings. Sterols are special forms of steroids, with a hydroxyl group at position-3 and a skeleton derived from cholestane.
steroids, peptides and amines
steroid hormones and nonsteroid hormones
Hormones. Fool.
All hormones are blood-borne.All hormones are "chemical messengers."
i think is hormones
the glands produce hormones
They are called hormones.
chemical signals of the endocrine system, the group of glands that, along with the nervous system, controls the body's responses to internal and external stimuli. Hormones are carried to their target cells in the bloodstream.
Hormones. Fool.
All hormones are blood-borne.All hormones are "chemical messengers."
Hormones
i think is hormones
what structures produces hormmones
the glands produce hormones
They are called hormones.
Receptors allow hormones to bind to their target cells.
Hormones
blood stream
testis