Wahba Yousif

مُعلم بالمرحلة الثانوية









means that the blood pressure in your arteries is 120 when the left ventricle is contracting. ... During diastole the thick muscular walls of the ventricles relax. Again, this happens to both sides of the heart

Arteries are the blood vessels that carry blood from the heart to the body. When an artery is damaged, it can bleed quickly and can become life-threatening. Veins can also get hurt in an accident. ... Bleeding from veinsis slower and stops more easily, so it is usually less dangerous.

Lymph is the fluid that circulates throughout the lymphaticsystem. It is formed when the interstitial fluid (the fluid which lies in the interstices of all body tissues) is collected through lymph capillaries. ... Lymphreturns proteins and excess interstitial fluid to the bloodstream

Place the tail end of the bandageon the inside of the arm, just below the elbow, and wrap it around the arm twice to secure the bandage. You want it tight enough to apply pressure but to not cut off circulation. Have the victim bend the elbow slightly if they can do so without causing further pain or injury


cell consumes an energy to absorb ions of some salts against the concentration gradient.

A ring of muscle fibers in the lower esophagus prevents swallowed food from moving back up.

Reversible inhibitors. Traditionally reversible enzyme inhibitors have been classified as competitive, uncompetitive, or non-competitive, according to their effects on Km and Vmax. These different effects result from the inhibitor binding to the enzyme E, to the enzyme–substrate complex ES, or to both, respectively

Enzymes are proteins that control the speed of chemical reactions in your body. Without enzymes, these reactions would take place too slowly to keep you alive. Some enzymes, like the ones in your gut, break down large molecules into smaller ones.

A leaf is an organ of a vascular plant and is the principal lateral ... Furthermore, several kinds of leaf-like structures found in vascular plants are not totally ...

Lymph is the fluid that circulates throughout the lymphatic system. It is formed when the interstitial fluid is collected

Lymph: Lymph, pale fluid that bathes the tissues of an organism, maintaining fluid balance, and removes bacteria from

A small bean-shaped structure that is part of the body's immune system. Lymph nodes filter substances that travel ...

Organs of excretion make up the excretory system. They include the kidneys, large intestine, liver, skin, and lungs. The kidneys filter blood and form urine. They are part of the urinary system, which also includes the ureters, bladder

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