How to draw a drowning prevention handwritten newspaper in the third grade

How to draw a drowning prevention handwritten newspaper in the third grade is as follows:

1, first draw a rectangular water wave frame as the frame of our handwritten newspaper, then look at us on the left side of this frame, and then draw our propaganda words to prevent drowning.

2. Next, we draw a rainbow outline shape as a decorative pattern under this frame, and draw two coconut trees on the rainbow outline pattern.

3. On the left, we drew another cartoon-shaped sun. In the sun, we drew a child who fell into the water for help. Finally, draw a horizontal line in the blank as the position of our propaganda text, thus drawing our handwritten newspaper knot for preventing drowning.

Drowning, also known as drowning, is a situation in which people are injured when they are submerged in water or other liquid media. Water fills the respiratory tract and alveoli, causing hypoxia and suffocation; The water absorbed into the blood circulation causes the change of blood osmotic pressure, electrolyte disorder and tissue damage.

Eventually lead to respiratory arrest, cardiac arrest and death. The consequences of drowning can be divided into non-morbid, morbid and death, and the process is continuous. A patient who has not lost his life after drowning is called dying. Asphyxia combined with cardiac arrest after drowning is called drowning, and beating heart is called dying.

Within a few seconds after drowning, people instinctively hold their breath, causing diving reflex (apnea, bradycardia and severe contraction of surrounding blood vessels) to ensure blood supply to the heart and brain.

Then hypercapnia and hypoxemia appear, which stimulate the respiratory center and enter the involuntary inspiratory period. As the inhaled water enters the respiratory tract and alveoli, it fills the airway, leading to severe hypoxia, hypercapnia and metabolic acidosis.