CPR is short for cardiopulmonary resuscitation. It’s a life saving medical procedure which is given to someone who is in cardiac arrest. It helps to pump blood around the person's body when their heart can’t. To carry out CPR a person presses up and down on the casualty’s chest (chest compressions<span>) and gives them a series of rescue breaths to help save their life when they are in cardiac arrest. At 6 min, CPR was started with an automated chest compressor at a rate<span> of 200-240/min.
more information, https://www.ncbi.nlm.nih.gov/pubmed/19520479
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<span>a substance required in relatively larger amounts by living organisms</span>
Answer:
Muscles contract through a chain process of electrochemical signalling between the nervous system and muscles.
Explanation:
The muscle contraction is initiated by the nervous system by sending a signal. This signal also referred to as action potential travel through the motor neuron. This motor neuron releases a chemical signal to muscle when the electrical signal carried by it reaches the neuromuscular junction (a junction where motor neuron meets the muscles).
The chemical message referred to as neurotransmitter binds to the receptors present on the muscle fibers. These receptors causes the influx of sodium ion which in turn trigger the release of calcium ion thereby initiating the contraction of muscles.
An Organism is the correct answer. It has multiple elements such as H2O or CO2
Children who are assertive and good at regulating emotions are more likely to help,share and give comfort to others in distress. If a peer is in distress they will react by frowning,lip biting, comfort seeking,rise in heart rate, and a sharp increase in EEG brain-wave activity in the right cerebral hemisphere that contains negative emotions.
