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Red blood cells are intricately designed to carry out the extremely important function of delivering oxygen to where it is required in the body.Firstly, red blood cells have a significantly different shap...
A fish had gills, made up of gill filaments containing lamellae, which provide a very large surface area for oxygen to diffuse out of the water as it moves over them. The blood vessels ar...
The activated oestrogen receptor binds to the promoter region of the specific gene. It then stimulates RNA polymerase to transcribe the gene, thus increasing transcription.
There are 4 chambers of the heart; 2 atria (upper chambers) and 2 ventricles (lower chambers). Blood flows from the vein into the atrium, and when the pressure of the atrium is higher than the pressure of...
A specially adapted capillary which connects the hepatic vein to the hepatic portal vein and hepatic artery within the liver lobule.
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