A normal PR interval measures 0.12-0.20 seconds which is 3 to 5 small boxes on the EKG strip. When you measure a PR interval, you start measuring at the BEGINNING of the p-wave until the BEGINNING of the QRS complex. Here are some simple steps on how to measure the PR interval: Find the P-wave on the EKG strip. Determine where the PR interval is, and to do this you start measuring at the beginning of the p-wave until the beginning of the QRS complex. Count the SMALL boxes between there measurements. Remember each box represents 0.04 seconds.
The role of the excretory system is to rid the body of toxic waste products. Which of these body systems also plays a direct role in removing waste products from the body? A) endocrine B) nervous C) respiratory D) skeletal.
Detecting toxins or substances is much different than clearing them from your system. The systems that detoxify are kidneys, liver, gastrointestinal tract, immune system, lungs and to a much lesser extent, sweat glands, hair, skin and breast milk. Most toxins are eliminated in urine and feces.slide 3 of 7.he use of exercise, saunas, hot yoga to sweat and flush toxins from the body is widely practiced in modern times. Sweat therapy has existed through the ages and has attained cross-cultural acceptance.