معلومات اسماء الحيونات ذوات الدم الحار بالانجليزي

معلومات قصير موضوع انجليزي بحث تقرير بالانجليزي باللغة الانجليزية انشاء

موضوع عن الحيوانات الاليفة  وانواعها  اين تعيش ماذا ياكل مدة حياتها اسماء صغارها

تعبير عن الجمل بالانجليزي تعبير كتابي عن وصف حيوان اليف عبارات قصيره للاطفال

information about    paragraph معنى برزنتيشن  معلومات بسيطه  اسم  نطق كلمة معنى كلمة برجراف حيوان مفترس لاحم عاشب اليف متوحش وحيش الغابة موسوعة عالم الحيوانات برمائي كل شيئ عن تزاوج انواع الانجليزي  الشائعة معنى كلمة بالانجليزي اختصارات

معلومات عن الحيوانات بالانجليزي موضوع عن الحيوانات الاليفة بالانجليزي دورة حياتها

تغذية الحيوانات والحشرات على ماذا تتغذى كيف تتغذى الموسوعة تتذوق الطعام تصنيف

فوائد الجنس للصف الرابع للصف السابع الاول الثاني الثالث الخامس السادس الثامن التاسع كتابة  ذكر اضرار  معلومات طائر انواع  تربية قصة صفات حديقة الحيوانات

ذوات الدم الحار بالانجليزي ذوات الدم الحار من البشر ما هي ذوات صفات اصحاب الدم الحار

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Warm-blooded animal must control body temperature

Warm-blooded animals, or warm-blooded animals, control the internal temperature of their bodies by regularization systems such as sweat, tremors ... Since the temperature of the body must remain stable, unlike cold-blooded animals, it can become the victim of his environment.

The warm-blooded animal can, up to a certain limit, control the temperature variations of its body to keep it within an acceptable limit. If he fails to increase his temperature above his minimal need, the animal will suffer from hypothermia, which is a too great loss of body heat. Conversely, if the animal overheats because it can not evacuate the excess heat it has accumulated, it is called hyperthermia, which is called heat stroke or fever depending on the cause. .

When the temperature of an animal goes down, its physiological activity must increase to produce heat and compensate for the loss it undergoes. The chills and tremors that we have when we are cold is this mechanism of regulation of the internal temperature which makes the muscles work to produce heat.

Several means are used to produce heat for the body. Muscle activity and digestion are ways to produce heat, but keeping it is also very important. Fur, hair, feathers ... serve as insulation for the body and limit the variations caused by the external environment. Fat accumulation is another protection against heat loss. The volume of an animal will also play in his favor, because the surface of the body is often smaller compared to its mass as the animal increases in size.

Naturally, the techniques of the ectothermic animals also serve to keep a constant temperature. This is why many warm-blooded animals will use the sun to warm up, or the shade to cool down. A swim in cold water, go like the sun, help to keep a constant body temperature.

When the temperature rises too much, it is necessary that the animal evacuates heat, or it will wither away to death. Suer is a system that helps lower body temperature to prevent heat stroke. A dog does not sweat, so it will bring in fresh air, and exhale the air warmed by his body to reduce its temperature. Some birds use their highly vascularized beak to evacuate heat. Blood flow can be increased or reduced to conserve or dissipate heat.

As the environment directly influences the life of a warm-blooded animal, it is often restricted in its choice of region to live there. For example, a polar bear would not survive the equator because it is too hot for its conditioned metabolism for extreme cold. The same thing for tropical animals that can not survive the cold. Birds and mammals are warm-blooded animals that are therefore restricted to their environment. It's through our ability to make clothes and to protect ourselves that we are present everywhere on the globe