Intro To Cardiovascukar System Flashcards
What is heart failure
a syndrome in which the heart fails to deliver blood effectively to meet the requirements of metabolising tissues
What is the function of the cardio respiratory function
Transport to and from metabolising tissues
Homeostasis (ph, osmolarity, electrolytes, infection)
Generates pressure for renal filtration and reproduction
What is the first sound of the heart
The AV close
The lub
What is the second sound of the heart
S.L. valves shutting
Dub
What is cardiac output
The amount of blood pumped out per minute
What important factors ensure venous return to the heart
Sympathetic nervous system
Blood volume
Muscle (respiratory) pump
What is a portal vein
Carries blood between capillary beds
What controls Cardiac output and systemic vascular resistance
Sympathetic nervous system
How do the capillaries help maintain blood pressure
Capillary diffusion
Tissue fluid production
Extracellular vs intracellular fluid
Why do birds need an efficient cardiovascular system
To cope with high metabolic demands
Important for oxygen delivery and thermoregulation
What is the cardiac output of a pigeon
195ml/ min
What is the cardiac output of a cat
184ml/ min
What two organs have a local circuit
Liver
Kidney
What does the hepatic portal vein do
Brings blood to liver from the gut
What is cranial and caudal to the heart
Cranial- thymus
Caudal- diaphragm
