The heart is a hollow, muscular organ that comprises several
secondary muscles. These secondary muscles contract and relax
successively, thus pumping the blood through the heart. These
muscle activities can be measured electrically as a whole at the
surface of the skin with the ...
An electrocardiogram (ECG) enables you to observe the regular
sequence of heart contractions as well as to determine your heart
frequency by determining the interval between two heart
contractions. In a second experiment, you will measure the heart
frequencies of test persons of ...
An electrocardiogram (ECG) can record the sum of the electrical
activities of all of the heart muscle fibres. Under stress, cardiac
activity increases in order to maintain the stability of the
cardiovascular system. The heart contraction cannot be controlled
at will. This ...
A typical human electrocardiogram is recorded. The resulting
diagram shows all the elements that can be expected in an
electrocardiogram: P wave, PR segment, Q wave, R wave, QRS complex,
S wave, ST segment and T wave of a normal sinus rhythm for the
With Phonocardiography the sounds of the heart are graphically
represented. Cardiac and vascular measurements are recorded at
different locations of the circulatory systems.
Cigarette consumption influences the diameter and therefore the
circulation of the peripheral blood vessels. This experiment
studies the change of the finger temperature during smoking.
How the temperature curve differs should be discussed with
reference to the ...
How can our body temperature be regulated? This experiment shows
why we sweat in summer and wear gloves in winter.
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