http://www.worldinvisible.com/apologet/humbody/bloodcir.htm
http://www.pharmacology.med.umn.edu/HTML%20Presentation%20folder/sld008.htm
http://www.people.virginia.edu/~rjh9u/imsys.html
Additional info, explanations & movies of digestive, cardiovascular, urinary, & respiratory systems – includes breathsounds
Categories of Blood Pressure
Medications
A. Diuretics
Diuretics (often called "water pills") act upon the urine ducts
within your kidneys to let more sodium chloride and water pass into your urine
rather than being taken back into your kidney's blood stream and into your main
blood stream. This action decreases the blood volume and fluid volume
throughout the body, thus lowering blood pressure. Diuretics also cause blood
vessels to dilate, further reducing blood pressure.
B. Beta Adrenergic Receptor Blockers (Beta
Blockers)
Beta Blockers block the effects of the sympathetic support system, the system
that responds to stress by raising blood pressure. They block the effects of
catecholamines, thus easing the heart's pumping action and widening blood
vessels. (See Article #8 "Messages
Transmitted From The Brain Fine Tune The Heart" ).
C. Calcium Channel Blockers
Calcium Channel Blockers bind to calcium channels on the surface of heart and
vascular cells, to interfere with calcium flow into the cell (See Article #6
"The
Essence Of The Heartbeat Changes With Aging"). This decreases the
strength of contractions of the heart and widens the blood vessels. Some
calcium channel blockers act selectively on blood vessels and not on the heart.
D. ACE (Angiotensin Converting Enzyme)
Inhibitors and Angiotensin II Receptor Blockers (ARBs).
ACE inhibitors reduce the production of angiotensin, a chemical that causes
arteries to constrict, and thus block angiotensin's effectiveness. This causes
the arteries and veins to dilate and reduces blood pressure. Angiotensin II
receptor blockers inhibit the binding of angiotensin to these receptors and
thus block its action on your heart, kidney and blood vessel cells.
E. Vasodilators
Other vasodilators, for example hydralazine or nitrates, also expand blood
vessels.
http://www.healthandage.com/html/res/aging_of_you/content/14.htm
http://pubs.acs.org/hotartcl/cenear/980525/brain.html
http://www.ama-
assn.org/ama/pub/category/7157.html
Thyroid function website & above picture: http://www.studentbmj.com/back_issues/1295/thyroid.htm
http://www.driesen.com/hypothalamic_control_of_the_pituitary_gland.htm
endocrine histology slides: http://webanatomy.net/histology/endocrine/endocrine_index.htm
above
picture & endocrinology info: http://laxmi.nuc.ucla.edu:8000/NM-Mediabook/TCL_files/topic.asp?topic_id=1095&system_id=403
http://www.chronicfatigue.org/History.html
Psychology website on
stress: http://www.guidetopsychology.com/stress.htm
Article on stress &
the immune response & picture below:
http://home.cc.umanitoba.ca/~berczii/nibvol1intro.html
