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Physical and Chemical Barriers (Innate Immunity) Physical and chemical barriers form the first line of defense when the body is invaded. Physical Barriers. The skin has thick layer of dead cells in the epidermis which provides a physical barrier. Periodic shedding of the epidermis removes microbes.
Explanation
Physical and chemical barriers form the first line of defense when the body is invaded. The skin has thick layer of dead cells in the epidermis which provides a physical barrier. Periodic shedding of the epidermis removes microbes. The mucous membranes produce mucus that trap microbes.
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Junctional bradycardia: rate below 40 beats per minute. Junction escape rhythm: rate 40 to 60 beats per minute. Accelerated junctional rhythm: rate of 60 to 100 beats per minute. Junctional tachycardia: rate above 100 beats per minute.
A junctional rhythm is characterized by QRS complexes of morphology identical to that of sinus rhythm without preceding P waves. This rhythm is slower than the expected sinus rate. When this rhythm completely takes over the pacemaker activity of the heart, retrograde P waves and AV dissociation can be seen.
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1. gunshot wound 2.gun 3.he scared Carols and Devin 4.Yes. They commited murder
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