Question

Epinephrine causes muscles to contract and the heart and lungs to increase respiration and blood flow....

Epinephrine causes muscles to contract and the heart and lungs to increase respiration and blood flow. In combination with epinephrine causing glucose production and secretion from the liver, how does epinephrine elicit a system wide response?

Multiple Choice

A.) Glucose provides energy for muscle contractions, which are stimulate by high concentrations of oxygen. Oxygen is provided by the increase in respiration and blood flow.

B.) Glucose provides energy for muscle contractions, resulting in high levels of pyruvic acid. The pyruvic acid is flushed from the muscle cells by the increase in respiration and blood flow.

C.) Muscle contractions require copious amounts of ATP, which is produced by the oxidation of glucose. Oxygen is provided by the increase of respiration and blood flow.

D.) Oxygen stimulates muscle contraction, and is supplied to the muscles by the increase in respiration and blood flow. ATP provides the energy for muscle contractions, and is formed in the liver when glucose is converted to glycogen.

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Answer #1

Answer is C:

Muscle contractions require copious amounts of ATP, which is produced by the oxidation of glucose. Oxygen is provided by the increase of respiration and blood flow.

Epinephrine or adrenalin is a hormone & neurotransmitter. Epinephrine is normally produced by both the adrenal glands and certain neurons. It plays an important role in the fight-or-flight response by increasing blood flow to muscles, output of the heart, pupil dilation, and blood sugar.

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