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BLOOD CIRCULATION (BLOOD TRANSPORT (Nutrients, Metabolites, Excretory…
BLOOD CIRCULATION
MAMMALIANS
Closed circulatory system (Cardiovascular system)
HEART
CHAMBERS
ATRIA (UPPER CHAMBER)
Receive blood from other organs
Deoxygenated blood
Thin-walled
VENTRICLE (LOWER CHAMBER)
Pump blood away from heart
Oxygenated Blood
Thick muscular wall (To withstand high blood pressure)
VALVES
ATRIOVENTRICULAR
SEMILUNAR
BLOOD VESSELS
ARTERY
Carry blood away from heart
CAPILLARY
permit exchange of material with tissues
VEIN
Return blood from capillaries
:check: SEPTUM
Divides the heart into left & right chamber
RIGHT =
PUMPS DEOXYGENATED BLOOD TO THE LUNGS
LEFT =
PUMPS OXYGENATED BLOOD TO ALL PARTS OF THE BODY
PULMONARY CIRCUIT
Carry deoxgenated blood
SYSTEMIC CIRCUIT
Carry oxygenated blood
MAJOR BLOOD VESSELS
AORTA
VENA CAVA
IMPORTANCE
Provide rapid mass transport
INVERTEBRATES
Gastrovascular cavity
Cnidarians
Independent :
Gas exchnage
Nutrients uptake
Removal of waste
Flatworms
Trilobed cavity branches
Open circulation system
Hemolymph
Slow circulation
For small animals
Require tracheal respiratory
Surround organs
In arthropods and molluscs
closed circulation system
Blood
Moves into capillaries
Rhythmic pulsatile movements
Fast circulation
Small branch vessels in every organs
In annelids
VERTEBRATES
CLOSED CIRCULATION SYSTEM
Single loop
Heart pump blood to gills
In fish :
Single atrium and 1 ventricle
Double loop
Systemic circuit
Blood not pumped to lungs
2 atria ; 1 ventricle
Pulmonary circuit
Blood pumped to lungs
Complete Separation
2 atria ; 1 ventricle
BLOOD TRANSPORT
Nutrients
Metabolites
Excretory products
Gases
Hormones
cells of non-respiratory function
Heat
BLOOD-RELATED DISEASE
ATHEROSCLEROSIS
STROKE
HEART ATTACK
HEMOPHILIA
LYMPHATIC SYSTEM
LYMPHATIC VESSELS
LYMPH NODES
Create lymphocytes
Filtering stations
LYMPHATIC CAPILLARIES
FUNCTION
Body fluid balance
Fat absorption
Immunological defense
LYMPHATIC DISORDER
Elephantiasis
Lymphatic filariasis