The fact that they can't sweat is just one example of how ectotherms are reliant upon temperature. But eating fecal matter, or having a smaller colon doesn't have anything to do with this. In reality, specialized heart muscle cells in an organism must depolarize and then send an action potential to the surrounding cells for the heart to beat. The depolarization process is dependent upon ions diffusing across a semipermeable membrane, and, because the rate of diffusion varies directly with temperature, the colder these specialized heart muscles get, the slower the heart will beat.
This process of a beating heart is akin to ALL animals with a beatable heart. In the case of ectotherms, however, they are incapable of maintaining a warm body temperature, and, therefore, their heart slows down. In endotherms with severe hypothermia, the heart rate will slow as well, and, if it slows too much, the organism will die.
Most sharks are ectothermic, but some (namely the Great White) can produce their own body heat. They do this by using the heat produced by burning energy from pumping their blood. As blood is pumped to the body, the blood moving back to the heart gives off its heat which is picked up by the cold blood. In this way, some sharks can be warmblooded, but most are ectothermic.
Sheep hearts have a layer of fat surrounding them to provide insulation and protection for the heart muscle. This fat helps regulate the temperature and cushion the heart from physical damage. Additionally, fat is a source of energy that can be used by the heart for metabolic processes.
When somebody is cleaning a fish and finds a heart with four chambers.
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no but it can help circulation! It can improve circulation, if you think about it, if it helps with circulation i.e. improves it then the blood will circulate quicker so therefore the heart will pump faster but not a lot. I am going to be writing a paper on this subject in the next academic year. This subject seems to be a new one and one that could be useful to our equestrian athletes in the future.
booo...someone answer it
each degree rise in temperature cause 10 beats rise per minute
micoligits and chlorocimisis will affect the heart
how does the heart disease affect in tissue
depressants affect the heart rate by its heart rate
the heart
A 4-chambered heart.
Heart and skin.
yes because of the chambers the circulation of the blood is classified into single circut circulation & double circut circulation.
Drinking any liquid will affect your heart in some way or another.
Here's a link to a website -- there are a lotof different drugs that can affect your heart!
well, a heart attack can affect you in sport because of your face.