Discuss the nutrient supply to the heart
What will be an ideal response?
Although the heart must rely heavily on its O2 supply to generate ATP, it can tolerate wide variations in its nutrient supply. As fuel sources, the heart primarily uses fatty acids and, to a lesser extent, glucose and lactate, depending on their availability. Because cardiac muscle is adaptable and can shift metabolic pathways to use whatever nutrient is available, the primary danger of insufficient coronary blood flow is not fuel shortage, but O2 deficiency.
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The chamber of the heart forming the apex is the left atrium.
Answer the following statement true (T) or false (F)
An individual's karyotype shows trisomy 21. This is an example of a
A) translocation. B) chromosomal abnormality. C) mutation. D) recombination error. E) teratogen.
A function of insulin is to
A. increase the uptake of glucose by its target tissues. B. decrease the uptake of amino acids by its target tissues. C. increase glycogen breakdown in the liver and skeletal muscle. D. increase breakdown of fats. E. increase gluconeogenesis.
Each of the following is an inorganic compound except
A) water. B) acids. C) bases. D) salts. E) carbohydrates.