APK 2105C Lecture Notes - Lecture 34: Smooth Muscle Tissue, Hyperaemia, Capillary Pressure

17 views2 pages
Chapter 14, Lecture 5
Vessels & Blood Pressure
Types of intrinsic regulation of organ CO
o Changes in vessel diameter = dictates vessel resistance
Smooth muscle relaxation vs. contraction
What signals the smooth muscle?
Metabolic activity (active hyperemia)
o Activity of cells
o Body’s ability to communicate to blood vessels to get more
blood to the organs
o CO2 goes from cell to ICF to capillaries to be carried away
o Delivery of O matches
rate of O consumption
o Matching of metabolic
need to reactive = no
significant changes in
CO2 and O levels in ICF
o When you increase
metabolic rate, consume
O faster than blood
supplies, give off CO2
faster than can be taken
away = higher CO2
concentration =
vasodilation of arteriole =
lower resistance = more
blood = increased O
supply = increased taking
CO2 away
Changes in flow (reactive
o Low BF
o Low O concentration,
increased CO2 con
o Vasodilation
o Low resistance
o More BF
o More O delivery, more CO removal
o Often caused by blockage
Muscle stretch (myogenic response)
o Increased perfusion pressure (more
BF to organ)
o Increased BF
o Increased stretch of arteriole
o Constriction
o More resistance
o Loess flow
o Negative feedback to get back to
where they were
find more resources at oneclass.com
find more resources at oneclass.com
Unlock document

This preview shows half of the first page of the document.
Unlock all 2 pages and 3 million more documents.

Already have an account? Log in

Get OneClass Notes+

Unlimited access to class notes and textbook notes.

YearlyBest Value
75% OFF
$8 USD/m
$30 USD/m
You will be charged $96 USD upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.