Yes there are histology technician classes in your area. These classes can be costly and along with depending where you live the commute can be extremely costly.
The Pain Scale in the US is a simple self-measurement "from 0 to 10" on which a patient ranks the pain they feel "in this moment".
Alert Verbal Pain Unresponsive
It is an ordinal scale.
On a scale of 1 to 10....1 being no pain 10 being the worst pain of your life.
There is no standardized SI unit for measuring pain. Pain is subjective and therefore difficult to quantify using a single unit of measurement. Instead, pain intensity is often assessed using scales such as the visual analog scale or numerical rating scale.
The unit that calculates PAIN is called a Visual Analog Scale (VAS) or a Numeric Rating Scale (NRS). These are tools used in clinical settings to measure and assess pain levels reported by patients.
well.... first off you have to find the scale factor...
Read what the scale or the key to the scale says.
AVPU scale stands for alert, verbal, pain, unresponsive
I find answering the question about my pain level being between 1 and 10 to be very difficult to answer. If the question is very difficult for the patient to answer, it is difficult for the healthcare practitioner to get much useful information from the answer.
The blues scale you may find in the book for Jazz Guitar or blues Piano. You also may find blues scale in the music dictionary of Jazz and Blues or book The Blues scale.
To find a minor scale, start with the natural major scale and lower the 3rd, 6th, and 7th notes by a half step. This will give you the relative minor scale.