Respiration and Circulation

Changes in the blood flow during smoking (with Cobra4)

Principle

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.

Regulation of human body temperature (with Cobra4)

Principle

How can our body temperature be regulated? This experiment shows why we sweat in summer and wear gloves in winter.

Volumetric measurement of breathing in small animals

Principle

Volumetric measurement of the oxygen consumption of an animal enclosed in a temperature-controlled spirometer. Absorption of the exhaled carbon dioxide using concentrated potassium hydroxide solution.

Tasks

1. Measure the oxygen consumptio ...

Measurement of the human respiratory rate (with the Cobra3 Basic-Unit)

Principle and tasks

The number of inhalations per unit time is dependent on many factors, such as capacity of the lungs, health condition and activity.

Tasks

1. The respiratory frequencies before and after bodily exertion ...