All blood vessels are specifically structured to perform their function. For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope ...
All blood vessels are specifically structured to perform their function. For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope ...
COLD WEATHER can do more than leave you shivering and uncomfortable. A drop in temperature can also make subtle signs of dangerous poor circulation more apparent. When your heart pumps blood ...