Question

Describe 3 adaptations that enable the body to return low pressure blood to the heart against gravity.

Accepted Answer

Adaptations for carrying low pressure blood:

Bigger veins run between big active muscles so when they contract they squeeze the veins forcing blood towards the heart

Breathing movements of chest cause pressure changes, squeezing actions move blood in the veins of the chest and abdomen to the heart

Front	Describe 3 adaptations that enable the body to return low pressure blood to the heart against gravity.
Back	Adaptations for carrying low pressure blood: Veins have one-way valves at invervals Bigger veins run between big active muscles so when they contract they squeeze the veins forcing blood towards the heart Breathing movements of chest cause pressure changes, squeezing actions move blood in the veins of the chest and abdomen to the heart

Veins Pressure Blood Heart Adaptations Low Chest Describe