Examlex
In natural samples it is often difficult to differentiate live cells from dead cells or cells from nonliving matter.
Vasodilator Substance
Chemicals that relax and expand blood vessels, increasing blood flow and decreasing blood pressure.
Epinephrine
Hormone (amino acid derivative) similar in structure to the neurotransmitter norepinephrine; major hormone released from the adrenal medulla; increases cardiac output and blood glucose levels; also called adrenaline.
Coronary Blood Vessels
Arteries and veins that provide blood supply to the heart muscle.
Venous Blood
Blood that is returning to the heart through veins after having circulated through the body, characterized by its dark red color due to lower oxygen content.
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