Answer: The right answer is D. all of the above.
Answer: For an infant, use the 2-finger chest compression technique while only one rescuer is present. Once the second rescuer returns, us the 2 thumb-encircling hands technique. For a child, use one or two hands, whatever is needed to provide adequate compression depth.
Explanation:
P wave is the atria “firing”/depolarizing, the QRS complex is the ventricles depolarizing (and the atria are depolarizing while this happens), and the T wave is the ventricles depolarizing. Depolarizing is when it contracts, and repolarizing is when it relaxes and refills.
Answer:
To allow for the passage of light in a microscope.
Answer: red blood cells
Explanation:
Hemoglobin, iron-containing protein in the blood of many animals—in the red blood cells (erythrocytes) of vertebrates—that transports oxygen to the tissues
