Central Pump: The Heart Flashcards
The ________ system of humans has three basic functional parts or organs
A ______ (heart) that circulates a liquid (______) through a set of containers (_______)
Circulatory;
Pump;
Blood
Vessels
Primary function of CVS
- Distribution of nutrients and _______ to all body cells
- Collection of waste products and _____ from diff. body cells and carry them to _____ organs for excretion.
Oxygen;
CO2, excretory
Secondary function of CVS
- Thermoregulation
- Distribution of ______ to target tissues
- Delivery of antibodies, platelets and leucocytes to aid _____ ______ mechanisms.
Hormones;
Body defense
Primary function of heart is to _______ into circulation, which is approx. ______ grams.
Pump blood; 300
Heart consists of a dual pump (_____ and _____ pump) that ejects blood into 2 serial circuits : the _______ and ______ circulations
Left, right;
Systemic, pulmonary
The right pump is the __________ that propels blood into _______ circulation for exchange of ________ in lungs and the left pump is the _________ that propels blood into ______ circulation to supply oxygen and nutrients to ______
Right ventricle; pulmonary; gases
Left ventricle; systemic; tissues
The output of each pump is ______ liters of blood per minute which csn increase up to 5 fold when in exercise, emotion
5 liters
Heart has 4 chambers: 2 _____ and 2 ______.
The _______ and ______ constitute the right side of heart and _____ and ______ constitute the left side of heart
Atria, ventricles
Right atrium and ventricle;
Left atrium and ventricle
Direction of blood flow
- ______ atrium receives ______ blood from diff. body parts through superior and inferior __________ and empties the blood into the ______ ventricle
Right atrium; deoxygenated; vena cava; right ventricle
Direction of blood flow
- The _____ ventricle pumps blood into the _______ circulation through the pulmonary trunk (pulmonary _______) where the gaseous exchange takes place.
The _______ valve prevents back flow of blood from pulmonary trunk into the right ventricle
Right ventricle; pulmonary; arteries;
Pulmonary valve
Direction of blood flow
- ______ atrium receives ______ blood from the pulmonary circulation through pulmonary _______ and empties the blood into _____ ventricle through _________ valve which ensures the unidirectional flow of blood from left atrium to left ventricle
Left atrium; oxygenated; pulmonary veins; left ventricle; mitral
Direction of blood flow
- ______ ventricle pumps blood into _______ circulation through _______ that delivers oxygenated blood to tissues
The __________ at the base of aorta prevents back flow into left ventricle from aorta
Left ventricle; systemic; aorta
Aortic/semilunar valve
_______ arteries more branched and thick than ________ arteries and provides more _____ to the flow of blood
Hence ______ pumps blood at much higher pressure than the _________
Systemic; pulmonary; resistance
Left ventricle; right ventricle
Peak left ventricular pressure =
Peak right ventricular pressure =
120 mmHg; 25 mmHg
