Cheatography
https://cheatography.com
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This is a draft cheat sheet. It is a work in progress and is not finished yet.
Bioeletrical signals
a grp of cells |
nerve & muscle cells |
cardiac muscle |
exert electrical signals naturally |
cell membrane potential - stimuli (electric) - excited - pass threshold - action potential - generate electric field |
EMG, EOG, ERG |
Bio-acoustic signals
sounds from the human body as it functions, giving information of the body's inner condition |
lung (breathing), heart (blood flow), bowel, joint (bone cracking) |
noninvasive and easy way of examination |
sound sensor apparatus |
receive the bio-acoustic signals |
Biomechanical signals
movement |
motion & displacement signals, pressure & flow system |
skeletal muscles |
movement of the limbs |
chest wall |
movement of chest - respiratory activity - examine rib cage injury |
Bio-optic signals
light |
change in optical properties |
alive cells = emit light energy |
dead cells = no emit light energy |
blood oxygenation |
measure the transmitted light from cells at different wavelengths |
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reflection or pulse rate by the change in skin color |
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Biochemical signals
measurement of the chemicals in the body |
directly from the living cells or in the form of samples |
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CO 2
, O 2
, ion conc, hormones, signaling & receptor pathways |
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signaling interactions & processing cellular information |
checks the ability of cells to recognize and respond to the changes in their environment |
homeostasis, immunity, repair, development |
error leads to disease |
cancer, autoimmunity, diabetes |
Bio-magnetic signal
weak magnetic fields |
specifically brain, lung, heart |
other organs also produce - but too weak - these organs work nonstop - slightly more stronger magnetic field |
measurement taken in a magnetic shielded room |
exclude most external disturbances |
detector called SQUID |
superconducting quantum interference device |
Bio-impedence signals
impedance = resistance |
implication of weak electrical current - travel thru the cells and tissue - measure the voltage drop generated = impedance of the body |
measure body composition |
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