Final answer:
True.Changes in temperature and acidity indeed result in a rightward shift of the oxyhemoglobin dissociation curve, known as the Bohr effect, increasing oxygen delivery to muscles during periods of exercise.
Step-by-step explanation:
True, changes in temperature and acidity do shift the oxyhemoglobin dissociation curve to the right, leading to a greater delivery of oxygen to muscle tissue during exercise. When the body is exercising, muscles generate heat and carbon dioxide as byproducts. This results in an increase in temperature and a corresponding decrease in the pH level of the blood (due to an increase in hydrogen ion concentration from the carbon dioxide forming bicarbonate).
These changes cause a rightward shift of the oxyhemoglobin dissociation curve, which indicates a decrease in hemoglobin's affinity for oxygen, facilitating more oxygen to be released to the active muscles. Known as the Bohr effect, it is an essential mechanism that allows for increased oxygen delivery during times of high metabolic demand, such as physical activity.
Looking at the options given in parts of your question, factors like increased carbon dioxide levels and increased body temperature are known to facilitate oxygen delivery to tissues by shifting the curve to the right. In contrast, a decreased body temperature would not facilitate this transfer, as it would shift the curve to the left, indicating increased oxygen affinity to hemoglobin, therefore retaining oxygen in the bloodstream rather than delivering it to tissues.