Endocrine system

Steroid hormones (steroidal)

made from cholesterol, lipid soluble, carried in bloodstream by plasma proteins, can enter any cell w/ receptor cells reacting

Non-sterioid hormones (peptides)

made from amino acid, enter target cells and binds to receptor molecule, dissolves easily in water

What makes up prostaglandins

Lipids synthesized from fatty acid

Stimulating hormones

stimulate pituitary gland to make hormones

Anterior pituitary stimulating hormones

glandular cells, adrenocorticotropin, thyrotropin, FSH, LH, Prolactin, Somatotropin

Posterior pituitary stimulating glands

Vasopressin and Oxytocin

Glandular cells

growth hormone

AdrenoCorticotropin

adrenal cortical steroids, adrenal gland

FSH and LH

testosterone and progestosterone, ovulation, testes/ovaries

Prolactin

milk production, mammary glands

Somatotropin

insulin, glucagon, and somatostatin, liver/pancreas

Vasopressin (antidiuretic)

osmoreceptors, hypothalamus

Oxytocin (pitocin)

uterine contractions and milk production

Exocrine glands

secrete onto open surfaces

Merocrine glands

release fluid through exocytosis

Apocrine glands

secretion cause loss of glandular cells

Holocrine glands

secretions release entire cells that disintegrate

Endocrine glands

secrete into tissue fluid/blood

Nervous system compared to endocrine system

rapid, within seconds

Endocrine system compared to Nervous system

slow, take years

Thalamus

receives sensory impulses

Hypothalamus

maintain homeostasis

Pituitary gland

produce hormones

Pineal gland

makes melatonin hormone (sleep)