The whirring sound between the "pub" and the "dub" in Brianna's heart symbolizes the fluttering emotions and anticipation she feels. It represents the heartbeat's rhythm, capturing the excitement and nervousness of her feelings. This sound is a metaphor for the inner turmoil and joy that love can evoke, highlighting the connection between her heart and her experiences.
Blood
movemant of the heart valves
no
the rib cage has gabs between the so every bone is separated this creates a cage that protects the lungs and heart organ..
Pulses
neural impulses from the brain
the human heart creates enouth presure to squirt blood upto 30 feet.
The valve between the heart and the aorta is the aortic valve, and the valve between the heart and the pulmonary artery is the pulmonic valve.
iron string
The pushing force that moves blood out of the heart is generated by the contraction of the heart muscle itself. When the heart contracts, it creates pressure that pushes blood into the arteries, allowing it to circulate throughout the body.
pleural space
Is called pulmonary circulation .