While a runner rests before a race, the hemoglobin in the blood returning to her heart is 75% saturated with O2 (that is, the blood is carrying about 75% of the maximum possible capacity to carry O2). While she is running, this percentage ...   A. decreases because the partial pressure of O2 in her lung alveoli is reduced to below 40 mm Hg.   B. decreases because the decreased PO2 in her muscles promotes O2 unloading in those tissues.   C. stays the same because hemoglobin is usually 75% saturated with O2.   D. increases because her muscles need more O2.   E. increases because she is breathing harder

Q: Below Po2 of 40 mmHg, where the HbO2 curve is steeper, small changes in Po2 cause a relatively…

A: The amount of gas carried by the blood is governed by Henry's law. Henry's law is a gas law that…

Q: Peripheral chemoreceptors in the aortic bodies and central chemoreceptors respond to changes in…

A: Peripheral chemoreceptors are the sensory extensions of the peripheral nervous system. These…

Q: The oxygen-hemoglobin dissociation curve is adaptive because ita. shifts to the right in the…

A: The oxygen-hemoglobin dissociation curve is a geographical distribution  of hemoglobin in its…

Q: If it weren't for the body's compensatory mechanisms, which of the following would decrease how well…

A: Ventilation is the movement of air in and out of the lungs, which occurs via the airways (bronchi…

Q: At rest, Emma typically takes thirteen 400 mL breaths per minute and she has an anatomical deadspace…

A: The dead space is the volume of the air which is inhaled, however, this does not get exchanged…

Q: the partial pressure of O2 in the plasma islow, how will that affect the movement of O2? ● A. O2…

A: Partial pressure of oxygen is the measurement of oxygen pressure in arterial blood. Its magnitude…

Q: increase the affinity”, “decrease the affinity” or “no change in affinity i) Myoglobin ii)…

A: Myoglobin and hemoglobin both are oxygen-binding proteins that are present in muscles and red blood…

Q: At the end of a normal expiration , pleural and alveolar pressures are-5 and 0 cm H2O ,…

A: Expiration and inspiration are two phases of the respiratory cycle that occur during breathing.…

Q: when carbon dioxide travelling in the plasma reaches the alveolus and is exhaled, then what happens…

A: Introductio:- the respiratory system are to provide adequate oxygen supply (O2) to meet the needs of…

Q: Would breathing pure oxygen cause a large increase in oxygen transport by the blood in a healthy…

A: Inhaling pure oxygen can influence a person's body in several ways depending on their overall health…

Q: A. Boyle’s Law B. Henry’s Law C. Dalton’s Law D. Haldane Effect E. Bohr Effect   1. The pressure of…

A: BOYLE'S LAW : the pressure of a gas is inversely proportional to its volume . HENRY'S LAW : the…

Q: With pulmonary vasoconstriction resulting from increased alveolar carbon dioxide what will haopen to…

A: Blood is transported from the right ventricle of the heart to the lungs and then back to the left…

Q: Vital Capacity is the sum of what three lung volumes? a. intake, total capacity, outtake b.…

A: Breathing (or ventilation) is the process of moving air into and from the lungs to facilitate gas…

Q: The two power point slides in this activity illustrate gas exchange in the lungs (external…

A: Cellular respiration is the process through which a cell converts glucose and oxygen into adenosine…

Q: Keep in mind the chemical reaction: CO2 + H20 H2CO3 H* + HCO3 A patient on a mechanical respirator…

A: Alkalosis is a condition caused by an increase in the alkalinity of the blood. Blood pH should…

Q: If blood passing by a lung has less O2 than inside the lung itself, then the O2 will due to

A: Lungs are important organs in the respiration process and supplying oxygenated blood to the vital…

Q: The time it takes for blood to pass through the capillaries of a pulmonary alveolus typically is…

A: Introduction: The facilitation of gas exchange between the circulatory system and the outside…

Q: A decrease in pH increases / decreases hemoglobins affinity for O2.  This causes more / less O2 to…

A: Hemoglobin is a protein in your red blood cells that carries oxygen to the body's tissues and organs…

Q: Which of the following reactions contributes the most to gas transport in systemic capillaries than…

A: The red blood cells or RBC contain hemoglobin which is the respiratory pigment in human beings. It…

Q: Due to polio, a patient suffers total paralysis of his muscles. For this patient, which of the…

A: The correct answer is: d. none of the aboveIn the case of polio causing total paralysis of muscles,…

Q: What is a common cause of respiratory alkalosis?

A: Respiratory alkalosis is a condition one which CO2 levels in the blood decreases mostly due to…

Q: Asthma is a very common disease. It is characterized by widespread narrowing of the bronchioles and…

A: Lungs are critical components of the respiratory system. Human lungs are constructed in such a way…

Q: The steep part of the O2-Hb dissociation curve... a. is where CO2 unloading occurs at the tissue…

A: The question is asking about the characteristics of the steep part of the oxygen-hemoglobin (O2-Hb)…

Q: In order for oxygen to be transported an arterial blood it can a. All answers are correct b.…

A: When humans inhale oxygen, red blood cells transfer it to all of the body's cells, a crucial…

Q: The oxyhemoglobin dissociation (saturation) curve shifts to the right as the blood becomes more…

A: PaO2 stands for partial pressure of oxygen, which is a measurement of oxygen pressure in arterial…

Hematology

Hematology is the branch of biology. Hematology is the medical field that deals with the treatment of blood disorders and cancers, such as hemophilia, leukemia, lymphoma, and sickle-cell anemia. Hematologists and hematopathologists are medical professionals who specialize in illnesses of the blood and its components.