OXYGEN SUPPLY AND THE HEART

Oxygen supply to the heart occurs through the coronary circulation. Coronary blood flow is determined by vascular resistance, and perfusion pressure, both hemodynamic factors. Vascular resistance on its own is dependent on the anatomy of the vascular tissues and the structure, as well as alterations in diameter of the blood vessels resulting from contraction and relaxation of the smooth muscles of the vascular tissues.


Oxygen delivery = Coronary blood flow x concentration of oxygen in the arterial blood

The units of oxygen delivery are ml O2/min. normally, the concentration of oxygen in the arterial blood is about 20 ml O2/100ml blood, or 20 vol. percent. Coronary blood flow, expressed per 100 grams of tissue weight is about 80ml/min for every 100g of tissue weight at resting heart rates. Hence, oxygen delivery to the heart under resting conditions is about 16ml O2/min per 100 grams of heart tissue.


THE CONCEPT

THE CONCEPT OF HEART DISEASE AND PHOTOSYNTHESIS

The study making waves is that of the relationship between heart disease and photosynthesis. It has been discovered that blue-green algae and light can be used to trigger photosynthesis within the cardiomyocytes to help in the treatment of heart disease.

SYNECHOCOCCUS ELONGATUS: THE SPECIFIC STRAIN

Synechoccus elongatus is a unicellular cyanobacterium that occurs naturally, and enhances photosynthesis across a broad spectrum wavelength. This bacterium has been traditionally used as a research model for the study of circadian rhythms, and also, for the production of CO2-based bio-fuels.

Bio Tech RSS News Feed

[Valid RSS]
powered by Surfing Waves