Answer:
Because it has oil and aqueous phases in it.
Explanation:
Emulsion is a biphasic system which has two substances oil and water.
Oil and water are immiscible and <u>emulsifier</u><u> </u><u>is</u><u> </u><u>required</u><u> </u><u>to</u><u> </u><u>make</u><u> </u><u>them</u><u> </u><u>miscible</u><u>.</u><u> </u>
Answer:
The heart is covered in double membranous sac called pleural membrane, this statement is incorrect.
Explanation:
The heart is covered by a double walled sac called pericardium.The pericardium fixes the heart to the mediastinum and encloses the heart and the root of great vessels. It has two layers serous membrane and fibrous membrane. The fibrous membrane is the most superficial layer of the pericardium. It is made up of dense and loose connective tissue. The serous membrane is divided into two layers, the parietal layer, which is fused to and inseparable from the fibrous membrane, and the visceral layer, which is part of the epicardium.
Between these two membranes is the pericardial fluid, which is filled with serous fluid which protects the heart from any kind of external shock.
Answer:
-Because epinephrine can bind to different receptors and can activate different signalling pathways with varying responses.
Explanation:
Epinephrine is a hormone, synthezied and secreted by adrenal gland during stress conditions. Epinephrine leads to vasoconstriction of many blood vessels, while it leads to dilation of blood vessels in liver and skeletal muscle cells.
This is because epinephrine has ability to bind with both alpha- and beta-adrenergic receptors, which are present in different target cells or organs. As both receptors involve different signalling pathways which leads to generation of different responses on target organs or tissues.
Thus, epinephrine shows different responses in different target organs.