Tag: regulation of the activity of heart

Questions Related to regulation of the activity of heart

Frequency of $\beta$-waves is

biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

  1. 4-7 Hz

  2. 8-13 Hz

  3. 14-30 Hz

  4. 1-3 Hz

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Correct Option: C
Explanation:

$\beta$-wave or $\eta$ rhythm is the term used to designate the frequency range of human brain activity between 12.5 and 30 Hz.
Thus, the correct answer is option C.

An ECG shows the functioning of the 

biology transport in mammals regulation of the activity of heart drug, tobacco and alcohol consumption community health and hygiene

  1. Brain

  2. Heart

  3. Lungs

  4. kidneys

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Correct Option: B
Explanation:

A permanent record of the electric events occurring during a cardiac cycle made on a graph paper in a wave form called electrocardiogram. The electric events include depolarization and repolarization of the auricles and ventricles bringing about their contraction and relaxation. The instrument used to record hearts electric event is named electrocardiograph.