Blood pressure control & Tissue perfusion Flashcards Preview

Cardiovascular > Blood pressure control & Tissue perfusion > Flashcards

Flashcards in Blood pressure control & Tissue perfusion Deck (7):
1

What is pulmonary oedema?

Collection of fluid in lungs - often caused by heart failure. When the heart is not able to pump efficiently, blood comes back up into vein that goes into lungs. As pressure increases --> fluid is pushed into air spaces.

2

What are the consequences of uncontrolled hypertension?

Stroke, LV hypertrophy, Hastened atherosclerosis, Vascular diseases

3

How does the baroreceptor reflex work?

Baroreceptors signal via afferent sensory input, so increased afferent sensory input means increased parasympathetic and decreased sympathetic effects.

4

What is orthostatic hypotension?

Low blood pressure when you stand up from sitting or lying down.

5

What are the different variations in leakiness of junctions between capillary cells?

1) Tight junctions = continuous - BBB (blood brain barrier)
2) Quite leaky = Fenestrated
2) V.leaky

6

What is oncotic pressure?

Pulls water into the circulatory system

7

What happens at arterial end?

High hydrostatic pressure but low oncotic pressure.