Giraffe have unusually high heart rates for their size, at 150 beats per minute. When the animal lowers its head the blood rushes down fairly unopposed and a rete mirabile in the upper neck, with its large cross sectional area, prevents excess blood flow to the brain. When it raises again, the blood vessels constrict and direct blood into the brain so the animal does not faint. The jugular veins contain several (most commonly seven) valves to prevent blood flowing back into the head from the inferior vena cava and right atrium while the head is lowered. Conversely, the blood vessels
The Beast in the Heart secret hidden within her heart, and she goes to visit her brother in America, to try to understand what happened in their past. What is the secret? She is determined to bring clarity and serenity in her life. She finally manages to free herself from her "beast in the heart". The Beast in the Heart The Beast in the Heart ("La bestia nel cuore" / a.k.a. "Don't Tell") is a 2005 film directed by Cristina Comencini, based on the novel written by herself. It was nominated for Golden Lion prize at the Venice International Film Festival. It was nominated for