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Mammalian (Human) Respiratory System

Respiration is a process of uptake of oxygen and removal of carbon dioxide from the tissues of the body.

Functions of respiration

  • Energy. All living being require energy to carry out various activities of body. This energy is derived from the oxidation of food for oxygen is required.

  • Excretion. Respiration excretes carbon dioxide and water.

  • Maintenance of pH. Elimination of carbon dioxide maintains the acid-base balance in the body.

  • Maintenance of temperature. heat is expelled out during expiration which maintains the body temperature.

  • Return of blood and lymph. During inspiration intra-abdominal pressure increases and intra-thoracic pressure decreases. This… (115 more words) …

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Respiratory Organs in Animals

Various organsinvolved inthe various types of respiration are

  1. Skin; exchange of gases through skin is called cutaneous respiration. Skin of these animals is thin, moist, highly vascular and easily permeable to gases. The atmospheric oxygen diffuses into the blood where it combines with the hemoglobin, present in plasma to form oxyhemoglobin. Oxyhemoglobin circulates in the tissues where it splits into hemoglobin and oxygen. Oxygen is used by the cells to oxidize food and carbon dioxide is formed. Carbon dioxide from the tissues diffuses into the blood and is brought to the skin from where it diffuses into atmosphere. This is… (1116 more words) …

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