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Portal Circulation | Science, Biology,Human and Body Parts Best Information
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The Veins carry blood towards the heart. The arteries and veins are named and classified according to their anatomical position. They can also be classified according to their size and wall structure. Functionally, arteries are subdivided into conducting, distributing and resistance vessels. 1 Conducting vessels :. These are large arteries from the heart and their main branches. the walls of these vessels are elastic in nature. 2 Distributing vessels :. 3 Resistance vessels :. 4 Exchange vessels :. These...
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Lymphatic System | Science, Biology,Human and Body Parts Best Information
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Lymphatic circulation along with blood circulation plays a key role in maintaining the fluidity in all regions of the body. It helps to maintain fluid balance in tissues and it absorbs fat from the digestive tract. It also functions as body’s defence system against micro organisms and other harmful substances. This system includes lymph, lymphocytes, lymphatic vessels, lymph nodules, lymph nodes, tonsils, the spleen and the thymus gland. Lymphoid Cells And Tissues. The Lymphatic Circulation :.
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Tonsils | Science, Biology,Human and Body Parts Best Information
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Blood Vessels | Science, Biology,Human and Body Parts Best Information
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Structure of blood vessels. Types of blood vessels :. 1 Large elastic arteries :. The walls of these arteries contain elastic fibres. The smooth wall measures about 1micron in thickness. It gets stretchedunder the effect of pulse and recoils elastically. 2 Muscular arteries :. They conduct blood from the arteries to the capillary bed. These are small vessels capable of vasodilation and vasoconstriction. These are fine vessels found between arterioles and venules. They measure 5-8micron in diameter. When ...
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The Nervous System | Science, Biology,Human and Body Parts Best Information
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The structure of a peripheral nerve :. The organs of the nervous system are continuous in nature. However,for study purposes it can be divided into systems and organs. A Central Nervous System (C N S). B Peripheral Nervous System. It consists of nerves and ganglia. The nerves that are formed from the brain are called the cranial nerves. There are 12 pairs of cranial nerves and 31 pairs of spinal nerves. C Autonomous Nervous System. Subscribe to: Post Comments (Atom). Human and Body Parts Best Information.
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Lymph nodes | Science, Biology,Human and Body Parts Best Information
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These are small round structures. Their size ranges from 1-25 mm. They are distributed throughout the course of the lymphatic vessels. These nodes are found all over the body. However they are concentrated as aggregations in 3 regions of the body. These are the inguinal nodes in the groin, the axillary nodes in the axillary region and the cervical nodes of the neck. Subscribe to: Post Comments (Atom). Human and Body Parts Best Information. Mobile Movies , Tv and Wallpapers. Most PoPular soNgs wiTh layRics.
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Thymus Gland | Science, Biology,Human and Body Parts Best Information
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Spleen | Science, Biology,Human and Body Parts Best Information
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The lymph enters the lymph nodes through afferent lymphatic vessels and exits through efferent vessels. The nodes contain open spaces called sinuses. The sinuses are lined with phagocytic cells. Spleen It is roughly the size of a clenched fist. It is located on the left side of the abdominal cavity. It has a fibrous capsule. The spleen contains two types of lymphatic tissues, namely the red pulp and the white pulp. Subscribe to: Post Comments (Atom). Human and Body Parts Best Information.
