cardiovascular system shayne soto p.4 (Major Functions ( (consists of…
shayne soto p.4
consists of heart & blood vessels (arteries, capillaries, veins)
: vital for supplying oxygen and nutrients to tissues and removing wastes from them
systemic circuit sends oxygenated blood to all body cells
Deoxygenated blood is carried by the pulmonary circuit to the lungs
1 more item...
Anatomy of the heart
deliver blood to body and lungs
separates right Atria and Ventricle
sends blood to body instead of backwards
separates left Atria and Ventricle
sends blood to lungs instead of backward
types of pericardium
• Innermost layer
• Directly on the heart
• Layer on top of the visceral
• Outermost layer
• Fat to cushion heart
protect and support from surrounding structure and invasion of foreign organisms
• Middle layer
• Primarily cardiac muscle
muscle portion; to pump blood from heart to the lungs and to systemic circulation
• Innermost layer
• Thin and smooth
• Stretches as the heart pumps
one way flow of blood through the
site of gas exchange
regulate blood pressure
dispurse nutrients and send waste to kidneys
in between arteries and veins
between veins and arteries
thicker external tunica and larger lumen
carry blood to heart
pressure is 1/12 of artery pressure
have thicker tunica and narrower lumen
carry blood away from heart
less elastic more muscular
Ventricles repolarize then relax
interventicular septium deplorizes
most of ventricles are deplorized
0.2 miliseconds for signals to travel between SA to AV node
100 milaseconds later
Ventricles are filled when Atrias contract
ventricles contract to push blood to Arota
High blood pressure
A condition in which the force of the blood against the artery walls is too high.
Sudden, unexpected loss of heart function, breathing, and consciousness.
Congestive heart failure
A chronic condition in which the heart doesn't pump blood as well as it should.
Improper beating of the heart, whether irregular, too fast, or too slow.
Peripheral artery disease
A circulatory condition in which narrowed blood vessels reduce blood flow to the limbs.
Damage to the brain from interruption of its blood supply.
Congenital heart disease
An abnormality in the heart that develops before birth.