Predict the effect on the length of the R-R interval of an electrocardiogram (ECG) if a patient experiences bradycardia
What will be an ideal response?
The R-R interval is the time between two successive R waves on the electrocardiogram (ECG). This interval represents the entire duration of the generation and spread of an action potential through the heart, and can be measured to determine the heart rate. Bradycardia is a heart rate slower than 60 beats per minute. The length between successive R waves will increase as the heart rate slows due to bradycardia.
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Indicate whether the statement is true or false
The median nerve
A) arises from the medial cord of the brachial plexus. B) arises from the posterior cord of the brachial plexus. C) arises from both the medial and lateral cords of the brachial plexus. D) innervates the pronators of the forearm. E) All of the answers are correct.
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A) to move air, gas exchange B) to filter air, to move carbon dioxide across the respiratory membrane C) gas exchange, gas exchange D) to warm and moisten air, to move air to the respiratory membrane
As you walk, your gastrocnemius muscle (calf muscle) contracts, shortening and causing plantar flexion from the ankle. This muscle contraction is describing as being ________.
Fill in the blank(s) with the appropriate word(s).