Answer:
C. the medulla oblongata, which is in contact with cerebrospinal fluid, monitors pH and uses this measure to control breathing.
Explanation:
The central chemoreceptors are located near the medulla inside the blood-brain barrier. When CO2 in cerebrospinal fluid increases, pH of the fluid lower (because CO2 becomes hydrated to carbonic acid). Change in pH stimulates the central chemoreceptors to activate respiratory centers which will increase the respiratory rate and depth of breathing.
Fionans bones are weak and break easily
It differs from DNA chemically in two respects: (1) the nucleotides in RNAare ribonucleotides—that is, they contain the sugar ribose (hence the name ribonucleic acid) rather than deoxyribose; (2) although, like DNA,RNA contains the bases adenine (A), guanine (G), and cytosine (C), it contains the base uracil (U) .
The majority of the lipids contained in our diet and retained in our bodies are triglycerides, esters made of one glycerol (an alcohol) molecule and three fatty acid molecules (carboxylic acids).
The ester of glycerol and three fatty acids is known as a triglyceride. In humans, other vertebrates, and vegetable fat, triglycerides make up the majority of the body fat. Obesity and the metabolic syndrome, a group of diseases marked by excess body fat around the waist, high blood pressure, high triglycerides, high blood sugar, and abnormal cholesterol levels, are two conditions that frequently accompany high triglycerides and increase the risk of heart disease and stroke. A blood supply blockage to your heart or brain could result from extremely high triglyceride levels. Chest pain may be one of the signs of a heart that is receiving less blood. Numbness, vertigo, disorientation, blurred vision, or a severe headache all be signs of a reduced blood supply to your brain. A particular health risk is quite curable.
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