Hypotension or Low Blood Pressure
It is the low arterial blood pressure. It may be due to anaemia or malfunctioning of the heart pu..
Blood Pressure
The pressure existing in the arteries is called arterial blood pressure. The blood pressure is high during systole and is called systolic blood pressure. It is low during diastole and it is called diastolic blood pressure. The difference betwe..
Blood Pressure
The lateral pressure that the blood exerts against the walls of the blood vessels is called blood pressure. It is caused by a) contraction of the ventricles b) resistance to the passage of blood through arterioles and capillaries. The pressure existing in the..
Role in Blood Clotting
The damaged platelets release a substance called thromboplastin. This sets in action, a series of reactions that result in the formation of clots. These clots block the site of the injury, avoiding excess loss of blood..
Red Blood Corpuscles (RBCs)
. The haemoglobin pigments combine with oxygen to form oxyhaemoglobin in the lungs. Around the body cells, the oxyhaemoglobin dissociates due to low oxygen concentration. Here, some of them combine with the carbon dioxide. Haemoglobin has a strong affinity for carbon monoxide (CO) with wh..
Addisons disease
This is caused by deficiency of mineralocorticoids. It is characterised by ion imbalance, which lowers water retention. Therefore, the person has low blood sugar, low Na + concentration and high K + concentration in the plasma. The symptoms include weight ..
Characteristics of Open System
1) The blood flows at a very low velocity and at low pressure due to the absence of smooth muscles. 2) There is direct exchange of materials between the cells and the blood because of the direct contact between them. 3) The respiratory pigment, when present, ..
Summary
. Lamp black, an amorphous form of carbon is produced by the incomplete combustion of carbonaceous fuels. Wood charcoal is used as a domestic fuel due to its low ignition temperature. It has the capacity to adsorb gases on its surface. Charcoal is not a conductor of electricity. But it is..
Carbon monoxide (CO)
It has strong affinity to combine/bind with haemoglobin in blood to form carboxyhaemoglobin, which reduces oxygen carrying capacity of blood to cause headache,nausea ,asphyxiation and fainting (low supply of O 2 to body though one may inhale normally). Against normal l..
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delta The alpha cells produce glucagon that increases the conversion of glycogen into glucose, increasing the level of glucose in blood. The beta cells produce insulin that increase the conversion of glucose into glycogen, decreasing the level of glucose in blood. Unde..
Result
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