Mammals Blood Type
mammals are warm blooded animals. They are warm blooded to keep them selves warm in different climates .
Why Warm Blooded Being warm blooded gives mammals a distinct advantage in may habitats, allowing them to be active when reptiles are hardly able to move. It also allows mammals to live in habitats where reptiles cannot live at all, such as the arctic, mountain tops, etc. The reason behind this is that muscle activity is basically dependent on chemical reactions, as are all biological functions. Chemical reactions run slowly when it is cold, but quickly when it is hot. This is because heat is synonymous with (the same as) energy. The more energy you have the faster the chemical reaction occurs. In the early mammals being endothermic probably allowed them to be active at night when competing reptiles were forced to rest or be sluggish.
Being warm blooded is costly. Mammals and bird have mush greater energy requirements than reptiles of a similar weight. Interestingly, because heat loss from a body is proportional to surface area, but heat generated is proportional to mass, and because the ratio of surface area to mass is less the larger you are - for mammals - being large is easier than being small, providing enough food is available. In simple terms, small animals lose heat more quickly than larger ones, hence it is easier to stay warm if you are bigger. This is the reason why many mammal populations of a given species which live in cold climates tend to be larger than those populations of the same species which live in warmer climes. For example wolves were bigger in Finland than in Italy.
Only mammals sweat, but not all mammals have the same number of sweat glands. For instance while primates have sweat glands all over their bodies, cats and dogs only have then in their feet and golden moles and whales don't have any.
80%-90% of the energy expended by most mammals is spent maintaining a constant temperature. Obviously, this factor varies with habitat and time of year. The energy requirements of a mouse at rest are ten times greater per gram of weight than those of a horse at rest. The smallest mammals need to eat almost constantly to survive.
The reverse effect is that large mammals have more problems cooling down if they overheat. Hence an elephant's large ear lobes which increase its effective surface area. By pumping blood into its ears an elephant can increase heat loss.
Energy requirements also affect an animals diet as the need for higher energy intake drives small mammals to seek high energy foods such as seeds, fruit, buds, insects and other mammals, whereas larger mammals can eat less nutritious food such as leaves or grass or else eat less often.
Another problem with maintaining a constant internal temperature is that it supplies a perfect environment for other non homeothermic animals to live in. Mammals and birds suffer from a far higher variety of pests and parasites than reptiles. These can be viruses, bacteria, amoebae, etc or worms and insects. What they all seek is a nice warm nutritious environment to grow in. For this reason mammals and birds have a much more highly developed immune system as well as social interactions that often include mutual grooming.
The burning of food (sugars) to maintain our inner temperature is called internal respiration which should not be confused with external respiration which is the physical process of breathing. Though the process has a lot of steps and involves enzyme catalysts the basic chemical equation is quite simple:-
Well I hope this has given you some appreciation of what a wonderful and special thing our warm comfortable bodies are. After all we only enjoy feeling hot or cold as a result of the difference between our body temperature and the surrounding air temperature.
Why Warm BloodedBeing lves were bigger in Finland than in Italy.
Only mammals sweat, but not all mammals have the same number of sweat glands. For instance while primates have sweat glands all over their bodies, cats and dogs only have then in their feet and golden moles and whales don't have any.
80%-90% of the energy expended by most mammals is spent maintaining a constant temperature. Obviously, this factor varies with habitat and time of year. The energy requirements of a mouse at rest are ten times greater per gram of weight than those of a horse at rest. The smallest mammals need to eat almost constantly to survive.
The reverse effect is that large mammals have more problems cooling down if they overheat. Hence an elephant's large ear lobes which increase its effective surface area. By pumping blood into its ears an elephant can increase heat loss.
Energy requirements also affect an animals diet as the need for higher energy intake drives small mammals to seek high energy foods such as seeds, fruit, buds, insects and other mammals, whereas larger mammals can eat less nutritious food such as leaves or grass or else eat less often.
Another problem with maintaining a constant internal temperature is that it supplies a perfect environment for other non homeothermic animals to live in. Mammals and birds suffer from a far higher variety of pests and parasites than reptiles. These can be viruses, bacteria, amoebae, etc or worms and insects. What they all seek is a nice warm nutritious environment to grow in. For this reason mammals and birds have a much more highly developed immune system as well as social interactions that often include mutual grooming.
The burning of food (sugars) to maintain our inner temperature is called internal respiration which should not be confused with external respiration which is the physical process of breathing. Though the process has a lot of steps and involves enzyme catalysts the basic chemical equation is quite simple:-
Well I hope this has given you some appreciation of what a wonderful and special thing our warm comfortable bodies are. After all we only enjoy feeling hot or cold as a result of the difference between our body temperature and the surrounding air temperature.
taken from this website http://www.earthlife.net/mammals/warm.html
Why Warm Blooded Being warm blooded gives mammals a distinct advantage in may habitats, allowing them to be active when reptiles are hardly able to move. It also allows mammals to live in habitats where reptiles cannot live at all, such as the arctic, mountain tops, etc. The reason behind this is that muscle activity is basically dependent on chemical reactions, as are all biological functions. Chemical reactions run slowly when it is cold, but quickly when it is hot. This is because heat is synonymous with (the same as) energy. The more energy you have the faster the chemical reaction occurs. In the early mammals being endothermic probably allowed them to be active at night when competing reptiles were forced to rest or be sluggish.
Being warm blooded is costly. Mammals and bird have mush greater energy requirements than reptiles of a similar weight. Interestingly, because heat loss from a body is proportional to surface area, but heat generated is proportional to mass, and because the ratio of surface area to mass is less the larger you are - for mammals - being large is easier than being small, providing enough food is available. In simple terms, small animals lose heat more quickly than larger ones, hence it is easier to stay warm if you are bigger. This is the reason why many mammal populations of a given species which live in cold climates tend to be larger than those populations of the same species which live in warmer climes. For example wolves were bigger in Finland than in Italy.
Only mammals sweat, but not all mammals have the same number of sweat glands. For instance while primates have sweat glands all over their bodies, cats and dogs only have then in their feet and golden moles and whales don't have any.
80%-90% of the energy expended by most mammals is spent maintaining a constant temperature. Obviously, this factor varies with habitat and time of year. The energy requirements of a mouse at rest are ten times greater per gram of weight than those of a horse at rest. The smallest mammals need to eat almost constantly to survive.
The reverse effect is that large mammals have more problems cooling down if they overheat. Hence an elephant's large ear lobes which increase its effective surface area. By pumping blood into its ears an elephant can increase heat loss.
Energy requirements also affect an animals diet as the need for higher energy intake drives small mammals to seek high energy foods such as seeds, fruit, buds, insects and other mammals, whereas larger mammals can eat less nutritious food such as leaves or grass or else eat less often.
Another problem with maintaining a constant internal temperature is that it supplies a perfect environment for other non homeothermic animals to live in. Mammals and birds suffer from a far higher variety of pests and parasites than reptiles. These can be viruses, bacteria, amoebae, etc or worms and insects. What they all seek is a nice warm nutritious environment to grow in. For this reason mammals and birds have a much more highly developed immune system as well as social interactions that often include mutual grooming.
The burning of food (sugars) to maintain our inner temperature is called internal respiration which should not be confused with external respiration which is the physical process of breathing. Though the process has a lot of steps and involves enzyme catalysts the basic chemical equation is quite simple:-
Well I hope this has given you some appreciation of what a wonderful and special thing our warm comfortable bodies are. After all we only enjoy feeling hot or cold as a result of the difference between our body temperature and the surrounding air temperature.
Why Warm BloodedBeing lves were bigger in Finland than in Italy.
Only mammals sweat, but not all mammals have the same number of sweat glands. For instance while primates have sweat glands all over their bodies, cats and dogs only have then in their feet and golden moles and whales don't have any.
80%-90% of the energy expended by most mammals is spent maintaining a constant temperature. Obviously, this factor varies with habitat and time of year. The energy requirements of a mouse at rest are ten times greater per gram of weight than those of a horse at rest. The smallest mammals need to eat almost constantly to survive.
The reverse effect is that large mammals have more problems cooling down if they overheat. Hence an elephant's large ear lobes which increase its effective surface area. By pumping blood into its ears an elephant can increase heat loss.
Energy requirements also affect an animals diet as the need for higher energy intake drives small mammals to seek high energy foods such as seeds, fruit, buds, insects and other mammals, whereas larger mammals can eat less nutritious food such as leaves or grass or else eat less often.
Another problem with maintaining a constant internal temperature is that it supplies a perfect environment for other non homeothermic animals to live in. Mammals and birds suffer from a far higher variety of pests and parasites than reptiles. These can be viruses, bacteria, amoebae, etc or worms and insects. What they all seek is a nice warm nutritious environment to grow in. For this reason mammals and birds have a much more highly developed immune system as well as social interactions that often include mutual grooming.
The burning of food (sugars) to maintain our inner temperature is called internal respiration which should not be confused with external respiration which is the physical process of breathing. Though the process has a lot of steps and involves enzyme catalysts the basic chemical equation is quite simple:-
Well I hope this has given you some appreciation of what a wonderful and special thing our warm comfortable bodies are. After all we only enjoy feeling hot or cold as a result of the difference between our body temperature and the surrounding air temperature.
taken from this website http://www.earthlife.net/mammals/warm.html