Describe the water level and the direction of water flow in your heart model at each stage listed below. 1. Squeezing bo...
Describe the water level and the direction of water flow in your heart model at each stage listed below.
1. Squeezing bottle 1
2. Directly after squeezing bottle 1
3. Squeezing bottle 2
4. Directly after squeezing bottle 2
5. Squeezing bottle 1 and 2 back and forth
Homework Answers
1. Squeezing bottle 1 means contraction of the atrium leading to water(blood) flow from atrium to ventricle(bottle 2) and level of water decreases in the atrium.
2. Directly after squeezing the bottle 1, it expands again.. leading to increase in water level.
3. Squeezing bottle 2 means contraction of ventricle and movement of water away from bottle 2 towards aorta and backwards towards atrium ( bottle 1 ) prevented by valves.
4. Directly after squeezing bottle 2, it relaxes again and movement of water occurs from bottle 1 to bottle 2.
5. Back and forth squeezing means heart beat in the form of pulses. When bottle 1 contracts , bottle 2 relaxes and vise versa.
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