biophysics rev 2

thermometer sentivity depends on

diameter of capillary tube

hoe to see capillary tube clearer ?

1- glass case
2- opaque white backing

why you cant use house thermometer ?

1- size huge for tongue
2- capillary tube no restriction

why do you have to wait several minutes ?

to reach thermal equiliprium

what machines to measure temperature ?

1-thermestor
2- thermocouple

thermestor

i can measure temperature while im far away

where is the thermoster used ?

At ICU

thermoster advantage ?

high accuracy

Pneumograph

measurment of temperature change of expired and inspired air

thermocouple uses ?

temperature measurment of machines that have temperature control

thermocouple advantages ?

1-have wide range of measurment
2- high accuracy

closing effect of premeasurment what is its factors ?

enhance temperature change and makes contrast more clearer

thermography applications

1- to know if there is breast cancer
2- can know any types of cancer in the body
3- can be used to study the circulation
4- can know where the hot spot is

therapeutic effect takes place in heated area

1-vasodilation
2-increase in blood flow
3- increase in metabolism
4- increase in cell membrane fluidity

different methods of applying heat to body ?

1- conductive
2- infrared
3- radiowaves
4- altrasound

superficial /deepheating method ?

1- conductive
2- infrared

conductive method uses

1- hot baths
2- electric baths

conductive methods heals

1- back pain
2- sprains
3- strains

main source of infrared ?

sun

why is the infrared more effective than conductive /

it can pentrate the skin up to 3mm

deep methods

1-radiowaves
2-altrasonic

radiowaves to make it reach the deep tissue we have 2 methods

1- capacitance techique
2- magnetic induction techinque

microwaves infos

1- magnitrole
2-900 mega hertez

why is 900 mega hertez better in treatment ?

causing more uniform heating around bony region

altrasonic

mechanical waves

cryos 3 types:

1- cryogenics
2- cryobiology
3- cryonics

cryogenics:

uses very low temperature

cryobiology

study of low temperature in biology

cryonics

to cool the body into state of suspended animation to so it can pass time without aging

different methods of blood preservation

1- not cryo methods
2- cryo methods