Will a highly active muscle receive more, same or less oxygen than a resting muscle? Explain...

Will a highly active muscle receive more, same or less oxygen than a resting muscle? Explain the mechanism that may influence oxygen delivery to this muscle. Appropriate diagrams/graphs describing relevant hemoglobin properties are required in order to receive full credit.

Expert Solution

Highly active muscle will recive more oxygen than a resting membrane.

Skeletal muscle accounts for about 20% of cardiac output.

Duringe extreme physical exertion, more than 80% of cardiac output can be directed to contracting muscle.

Blood flow Increases even before start of exercise.

Causes of Increased blood flow to the exercising muscle :

- Intramuscular vasodilation (50%): Caused by increased muscle local vasoactive metabolites, Adenosine K+, CO2 and lactic acid which caused dilation of arterioles and precapillary sphincter.

- Moderate increase in BP(30%): The increase in pressure forces also stretches the walls of the arterioles and further reduces the vascular resistance.
− Adrenergic sympathetic vasoconstrictor nerve: secretes NE, can decrease muscle blood fow. But
sympathetic system secretes large amount of E
and NE from adrenal medulla. The epinephrine
excites more beta-adrenergic (vascular beta2-
adrenoceptors produce vasodilation) receptor to
produce muscle vasodilation.

Increase in ventilation is proportional to O2 consumption and CO2 output, up to a maximum and .This proportional increase in ventilation easily compensates the fall in venous blood PO2 (from 40 to 25 mm Hg) or, the rise in venous blood PCO2. So, the arterial blood PO2, PCO2 and pH remains normalup to moderate grade of exercises.

Sydney Mullin answered 1 year ago

In no less than 200, but no more than 300 words explain to the class your...

In no less than 200, but no more than 300 words explain to the class your definition of Quality of Care. Make sure that your definition is in your own words, you provide references in your definition, and you format your writing in APA style.

Explain how ATP levels regulate glycolysis in resting muscle biochemistry

Explain why carbocations are higher in energy than oxonium ions, despite oxygen being more electronegative than...

Explain why carbocations are higher in energy than oxonium ions, despite oxygen being more electronegative than carbon. Second, state four factors that account for the relative stabilities of carbocations.

1. The membrane is more permeable to K+ than to Na+: a. At resting membrane potential...

1. The membrane is more permeable to K+ than to Na+: a. At resting membrane potential b. During the depolarization phase of an action potential c. After a neurotransmitter in an excitatory synapse binds to the postsynaptic cell d. More than one of the above is correct 2. During an action potential, the depolarization of the neuron membrane is the result of: a. Sodium moving into the cell b. Potassium moving into the cell c. Sodium moving out of the...

Discuss types of biases that result in investors making active choices that are less than optimal....

Discuss types of biases that result in investors making active choices that are less than optimal. In contrast to the biases discussed in the previous question, certain types of biases can yield less than optimal choices by individuals. .

Write a project proposal on this topic, not less than 2,500 words and not more than...

Write a project proposal on this topic, not less than 2,500 words and not more than 3000 words including references - “ Investigating the challenges confronting the performance of small and medium enterprises (SMEs) in Abuja.”

A diet needs to be created that contains not less than 2146 calories, not more than...

A diet needs to be created that contains not less than 2146 calories, not more than 58 grams of protein, not less than 10 grams of carbohydrates and not less than 13 grams of fat. Also, the diet should haveminimal cost. In addition the diet should include at least 1 Units of fish and at least 1.2 cup of milk. The diet will consist of the six different foods: Bread, Milk, Cheese, Fish, Potato and Yogurt. The following table lists...

1. Does depolarization cause the muscle to become more or less likely to produce an action...

1. Does depolarization cause the muscle to become more or less likely to produce an action potential? 2. If blood travels from the left atrium to the left ventricle during ventricular diastole, why do you need a stage of the cardiac cycle known as atrial systole? What would happen to cardiac output if no atrial systole occurred?

(a) Do you expect the surface energy to be greater than, the same as, or less...

(a) Do you expect the surface energy to be greater than, the same as, or less than the grain boundary energy, why? (b) A small angle grain boundary has a less grain boundary energy than a high-angle one. Why?

Nitrogen is slightly less dense than is a sample of air at the same temperature and...

Nitrogen is slightly less dense than is a sample of air at the same temperature and pressure. Calculate the density of N2 in g/L, at 1.45 atm at 15 degree Celsius

Question