quiz 2 Flashcards
absorption
colloidal dispersion absorb molecules
active transport
mechanism that moves
material across the cell membrane
actual pressure
the resultant pressure reading when the rate of flow valve is opened
delivery of arterial solution
from the embalming machine through the tubing
and arterial tube into the artery; also referred to as injection
differential pressure
difference between actual pressure and potential pressure is the rate of flow
diffusion of arterial solution
from within the vascular system through the
capillary walls and into the tissue spaces
distribution of arterial solution
from the point of injection throughout the
arterial system and into the capillaries
extravascular resistance
resistances outside the blood vessels
fluid distribution (diffusion?)
improving arterial solution distribution
- increase rate of flow
- increase pressure
- inject arterial solution using pulsation
- restrict drainage
- massage along pathway of artery
- inject adequate amount of solution
- relieve abdominal extravascular pressure
injection pressure
amount of pressure produced by an injection device
to overcome initial resistance within the vascular system
intravascular pressure (IVP)
- causes pressure filtration which is the most important passive physical transport systems
- moves embalming solution from the capillaries to the tissue fluids
intravascular resistance
resistances within the blood vessels
observations prior to injection
presence or absence of livor mortis, degree of rigor mortis, distension of veins/small arteries, skin discolorations, and tissue firmness
osmosis
the passive transport mechanism involved with liquid (or
solvent) movement
(through a semipermeable membrane)
passive transport system
- responsible for the movement of embalming solution from within the capillaries to the tissues spaces
- main passive mechanisms in the dead body include pressure filtration, osmosis and dialysis
potential pressure
pressure set with the rate-of-flow valve closed
pressure filtration
- caused by intravascular pressure
- one of the most
important passive physical transport systems - moves embalming solution
from the capillaries to the tissue fluids
rate of flow
amount of embalming solution injected in a given time
period, also called the speed of delivery
retained arterial solution
embalming solution that passes through the pores or walls of the
capillaries and eventually embalms the cells
signs of arterial diffusion
- Dye is evident in the tissues
- Firming of the tissues
- Loss of skin elasticity (firming is evident)
- Drying of the tissues
- Rounding of the fingertips, lips, and toes
- Mottling of the tissues (bleaching)
- Fluorescent dye observed using a blacklight
signs of arterial solution
- Dye is evident in the tissues
- Distension of superficial blood vessels
- Blood drainage
- Clearing of intravascular blood discolorations
squamos epithelium
capillaries walls are composed of endothelium, which lines the entire vascular system and is made up of flat single layered cells ___
