Blood vessels & Blood Pressure

Structure of blood vessels:

Inner layer - Tunica initima

Structure of blood vessels:

Middle layer - Tunica media

Structure of blood vessels:

Outer layer - Tunica externa (adventitia)

Capillary

Elastic Arteries

(Aorta)

Muscular Arteries

Arteriosclerosis

Atherosclerosis

Arterioles

AG and ACE inhibitors

Capillaries

Venules

Veins

Large Veins

Lymphatic system

Lymphatics

Lymphatic system:

Immune role

Blood pressure

Blood pressure waves -
The action of the heart

System blood pressure diagram

Blood pressure waves

Blood pressures in the pulmonary circuit

Blood pressures in the systemic circuit

Mean arterial pressures

Measurement of arterial BP

Diagram of BP & Korotkoff sounds

Korotkoff sounds

Systemic pressure is mainly affected by:

Diastolic pressure is mainly affected by:

Arterial BP is under short and long-term control

Eg. of baroreceptor control

Orthostasis when standing up

Drugs and BP:

1) Increase TPR by vasoconstricting

Drugs and BP:

2) Increase CO by increasing HR or SV

Drugs and BP:

3) Decrease TPR by vasodilating

Drugs and BP:

4) Decrease CO by decreasing HR or SV

Exercise changes:

Supply changes

Exercise changes:

Blood pressure changes