Answer:
contract
Electrical impulses from the brain tell the muscles to contract which moves the parts which causes pressure which squeezes the blood through the valves.
hope this helps xD
Answer:
The child's hypothalamus is not working correctly.
An action potential causes the vesicles in the axon terminal of a neuron to move towards the cell membrane, where they meet with it and merge with it. After merging, loads of neurotransmitters diffuse into the synaptic cleft. Here they diffuse and move to the post-synaptic dendrites receptors. This initiates a graded potential which moves down the dendrites to the axon hillock, where another action potential takes place.
Levels<span> of </span>organization<span> in ecology include the population, community, ecosystem, and biosphere. An ecosystem is all the living things in an area interacting with all of the antibiotic parts of the </span>environment<span>. </span>
