The second statement best explains the type of blood vessel and the function of these vessels' valves - <span>These are veins, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.
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Veins are large blood vessels which carry blood back to the heart. <span>Veins have a system of valves to prevent back-flow.</span>
Answer:
Tantrums can be described as throwing a fit when things does not go as expected or when one does not get what he / she desires.
To help a child who throws tantrums, the best way would be to not give in to the child's demands, especially if it is unreasonable and leave the child alone for a period of time for the child to calm down. This should be done at a young age to teach the child that throwing tantrums is not the way to get what they want. If one were to give in to a child's tantrums, this would simply encourage the behaviour.
Answer:
In a patient who has low blood oxygen levels, although his blood is circulating properly, is most likely that alveoli are functioning improperly.
Explanation:
The supply of oxygen to the blood depends on the breathing process, performed by the respiratory system.
At the level of the pulmonary alveoli occurs gaseous exchange, this is the entry of oxygen from the inspired air and the elimination of CO₂ resulting from cell metabolism. If the alveoli do not function properly, the gas exchange will be deficient and there will not be enough oxygen in the blood and tissues.
The other options are not correct because of:
<u><em>Capillaries
, aorta and pulmonary vein </em></u><em>are part of the circulatory system, on which the oxygenation of the tissues depends, not the oxygen content of the blood.</em>
2. When the left ventricle relaxes, the aortic valve closes and the mitral valve opens. This lets blood flow from the left atrium into the left ventricle.
4. Quickly shocking the heart with an automated external defibrillator (AED) can save a person's life after cardiac arrest. An AED is a portable, battery-operated device that a bystander can use. It checks the heart rhythm and can send an electric shock to the heart to try to restore a normal rhythm.
5. High blood pressure can damage your arteries by making them less elastic, which decreases the flow of blood and oxygen to your heart and leads to heart disease. In addition, decreased blood flow to the heart can cause: Chest pain, also called angina.
hope this helps :)
The short-term symptoms of exposure to pesticides the health department should warn viewers about is that people may feel nauseous or experience dizziness following exposure to the water.
<h3>What is contamination?</h3>
Contamination of water is the process of making a water unclean or unfit for its intended purpose due to the introduction of foreign substances.
According to this question, the local news reports that chemical runoff from a nearby pesticide plant released toxic chemicals into a nearby water source.
However, the health department should warn viewers that they may feel nauseous or experience dizziness following exposure to the water.
Learn more about contamination at: brainly.com/question/15964651
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