CH 19
this is anything that slows or is in opposition to blood flow
peripheral resistance
how much continuous blood flow does the brain receive?
about 750 mL/min
What happens if a T cell fails either the Positive or Negative selection test?
Apoptosis
if an allergic response is systemic, what is it called?
anaphylactic shock or anaphylaxis
This type of pressure is known as the "push", it is on the arteriole side of the capillaries
hydrostatic pressure
intrinsic and extrinsic factors control what of blood...
rate of blood
how much blood flow percentage do skeletal muscles receive at rest and then during exercise
20% at rest
70% active
which immune response is faster and larger, after being exposed to an outside invader?
secondary immune response
What are the two categories of the adaptive defenses?
Humoral Immunity
Cellular Immunity
In Positive Selection what does the T cell have to recognize?
Self-MHC
what fast-acting but short-term, adjusts vessel diameter?
Vasometer Center
Name three things that define peripheral resistance...
blood vessel diameter
blood viscosity
blood vessel length
This antibody is the first class that is secreted after an antigen is encountered...
IgM
innate is known as what type of immunity?
nonspecific
which type of blood flow rate controller helps the whole body?
extrinsic control
these are sensitive to pH, CO2, and O2
chemoreceptors
This type of pressure happens on the venule side of the capillaries and is known as the "pull"...
osmostic pressure
what cell type can aide in both the humoral and cellular immunity?
helper t cells
in positive selection test, what must the t cell have to recognize to pass...
self MHC
what percentage of t cells pass both the positive and negative selection tests?
2%
name 2 goals of the vasometer center...
Maintain MAP
Control distribution of blood
The are affects the speed of blood, if one encounters a large area of the vascular bed, what can we predict the speed of blood to be?
It would be at a slower speed
what is the # of helper t cells in a person that has HIV?
<200 cells/uL
in the negative selection test, what must the t cell not recognize?
self antigen
where do most adjustments to peripheral resistance happen?
arterioles