Chapter 45Hormones and the Endocrine System

By Gordon Pherribo Caryn Michel

Chemical Classes of Hormones

Types of Signaling Molecules

~Hormones send regulatory messages throughout the body in extracellular fluid

Endocrine signaling

Paracrine Signaling

Autocrine signaling

Synaptic signaling

Neuroendocrine signaling

Lipid soluble hormones

Water Soluble Hormones

Multiple Effects of HormonesEpinephrine can dilate skeletal muscle blood vessels while constricting intestinal blood vessels

Skeletal Muscle Blood Vessel

Intestinal Blood Vessel

Glucagon and Insulin• Insulin Glucagon

control blood glucose levels

• Diabetes Mellitus– Type 1 diabetes– Type 2 diabetes

Coordination of Endocrine and Nervous System

Oxytocin?

Posterior Pituitary:OxytocinAntideuretic hormone (ADH)

Anterior Pituitary: Tropic HormonesNontropic HormonesGrowth Hormone

• Thyroid Gland

Adrenal Hormones:Adrenal MedullaAdrenal Cortex

References

• http://srcbiomedsci.maxforum.org/2010/11/20/cell-communication-2/

• http://ncwcbio101.wordpress.com/• http://www.aboutcancer.com/adrena_1.htm• http://tuberose.com/Thyroid.html• http://schoolworkhelper.net/2010/07/the-en

docrine-system-function-and-structure/

• http://www.innerbody.com/image/endoov.html