Cardiovascular System Flashcards
The cardiovascular system consists of?
The heart(pump) High pressure distribution circuit Exchange vessels Low pressure collection and return circuit
The high pressure distribution circuit is also known as?
Arteries
The aorta and its major branches serve a ______ function, while the muscular arteries serve a _____ function
Transport
Distributive
The exchange vessels are also known as the?
Capillaries
The capillaries are ____ in diameter
8-10 micrometers
Capillaries can possess three types of endothelium namely?
Continuous endothelium
Fenestrated endothelium
Discontinuous endothelium
Capillaries containing continuous endothelium are found in the?
Muscle
Heart
Liver
Brain
Capillaries containing fenestrated endothelium are found in the?
Gastrointestinal tract
Renal glomeruli
Capillaries containing discontinuous endothelium are found in the?
Liver
Spleen
The low pressure collection and return circuit is also known as?
The veins
The four actions of the heart are?
Chronotropic action
Inotropic action
Dromotropic action
Bathmotropic action
The heart action that deals with the frequency of heartbeat or heart rate is?
Chronotropic action
Chronotropic action is divided into two, namely?
Tachycardia
Bradycardia
Tachycardia is the ___ in heart rate
Increase
Bradycardia is the ___ in heart rate
Decrease
The heart action that deals with the heart’s force of contraction is?
Inotropic action
Inotropic action is divided into two, namely?
Positive(increase)
Negative (decrease)
The heart action that deals with the conduction of impulse(velocity) through the heart is?
Dromotropic action
Dromotropic action is divided into two, namely?
Positive(increase)
Negative(decrease)
The heart action that deals with the excitability of cardiac muscle is?
Bathmotropic action
Bathmotropic action is divided into two, namely?
Positive(increase)
Negative (decrease)
The ___ and ___ regulate all the actions of the heart
Stimulation of nerves supplying the heart
Hormones or hormonal substances
The cardiovascular system is a ____ system
Closed
Cardio means?
Heart