Gaseous Exchange
Gaseous Exchange in the Alveolus of Man The capillaries lining the alveoli have impure blood which has low concentration of oxygen. So, the oxygen from the air easily diffuses into the blood through the thin barrier of the alveolus wall. Similarly since the concen..
Gaseous Exchange in the Alveolus of Man The capillaries lining the alveoli have impure blood which has low concentration of oxygen. So, the oxygen from the air easily diffuses into the blood through the thin barrier of the alveolus wall. Similarly since the concen..Gaseous Exchange
The capillaries lining the alveoli have impure blood which has low concentration of oxygen. So, the oxygen from the air easily diffuses into the blood through the thin barrier of the alveolus wall. Similarly since the concentration of carbon dioxide is quite high..
The capillaries lining the alveoli have impure blood which has low concentration of oxygen. So, the oxygen from the air easily diffuses into the blood through the thin barrier of the alveolus wall. Similarly since the concentration of carbon dioxide is quite high..Summary
(region of synthesis - leaves) to the region of negative potential (region of utilisation - roots, young leaves, flowers and fruits) along the concentration gradient. Other than sucrose, phloem also transports hormones (from the site of synthesis to the site of action) and some of the mineral ions ..
Oxygen transport
Most of the oxygen is transported in a combined state. Some of the oxygen is present in solution in the blood. For each decilitre of blood, 4.6ml oxygen enters the blood in the lungs. Of this only 0.17ml remains in the plasma in the solution form. Remaining enters the..
Chemical Coordination in Animals Summary
. Deficiency of growth hormone causes dwarfism and over secretion causes gigantism in the young and acromegaly in adults. Pancreatic Islets of langerhans secrete insulin on being stimulated by a rise in blood sugar or blood amino-acid level. Insulin lowers the blo..
Antitoxins
Antibodies that neutralize toxins produced in the body like bacterial toxins or introduced from outside like snake venom are called antitoxins. They are produced artificially these days. The antigen for e.g., snake venom is injected in low doses into an animal like horse or rabbit. After..
Damage to plants
Acidic water is dangerous to plants. Sulphuric and nitric acid rain washes nutrients out of the soil, damages the bark and leaves of trees and harms the fine root hairs of many plants which are needed to absorb water. Leaf pigments are decolorized because acid affects green pigment (chlorophyll) o..
Veins
The arteriole capillaries join to form venous capillaries which then join to form the venules and veins. The veins are thin walled vessels. The walls of the veins have all the three layers as in an artery, but they are comparatively thinner, less elastic and less muscular. The pressure of the ..
The arteriole capillaries join to form venous capillaries which then join to form the venules and veins. The veins are thin walled vessels. The walls of the veins have all the three layers as in an artery, but they are comparatively thinner, less elastic and less muscular. The pressure of the ..Liver
. These pigments are formed from the worn out and dead red blood cells. Thus, bile juice has an excretory function as it serves to remove the wastes from the blood stream. The bile juice passes out of the liver through hepatic ducts which then continue as a common bile duct. It ..
Pulmonary Exchange
The venous capillaries lining the alveoli have impure blood that has low concentration of oxygen and thus lower partial pressure (P O 2 in venous blood is 40mm of Hg). The oxygen of the air in the lungs has higher partial pressure (100mm of Hg) and therefore, easily di..
Result
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