This causes a phenomenon referred
to as valve regurgitation. This reduces the flow of blood in the blood vessels
and causes a reduction in the oxygenation of tissues of the body. This causes homeostatic signaling by the body resulting
in the exertion
of the heart pumping and increased breathing (heavy breathing). This is why
some of the symptoms include shortness of breath,
fatigue,
and light-headedness.
Answer:
Because this offers a control for your experiment.
Explanation:
If you are testing the effects of an enzyme, you need to have a control to compare your results with to see if the enzyme is truly what is causing the phenomenon.
There are 3 types of muscle tissue ; skeletal, smooth and cardiac. The muscle fibres of cardiac tissues are striated and branched. They have many nuclei. They make up the tissues of the walls of the heart. The smooth muscle cells/fibres are spindle shaped and compose the inner walls of lumens such as the Gastro Intenstinal Tract. The cells have one central nuclei. Skeletal muscle fibres are striated (but not branched) and make up muscle tissue that attach to the skeleton.