circulatory system Flashcards
what is the largest vein in the body that takes blood from below the heart and returns it to the right atrium
inferior vena cava
what is the function of valves
to prevent back flow in veins
what is the general blood flow path
Arteries ~> capillaries ~> veins
nutrients and oxygen are exchanged in tiny vessels called
capillaries
what liquid material does blood consist of
plasma
what is between each atrium and ventricle and helps keep blood from flowing back words
artoic
what has thick power walls that pump blood to the organs
arteries
what has thin walls and function like collection chambers for blood returning from the body
capillaries
what are the four functions of the circulatory system
-Circulates oxygen
-Removes carbon dioxide
-Provides cells with nutrients
-Protects the body against disease and infection
what is the order that air goes into the lungs
Pharynx -> Glottis -> larynx -> trachea -> bronchi -> alveoli
what is the medulla process
carbonic is in the blood -> chemo receptors in walls of aorta will detect the drop of PH-> if the PH increases the medulla will single the intercostal muscles and diaphragm to increase the depth of breathing -> CO2 is exhaled and O2 is inhaled
what are the three ways that carbon dioxide is transported in the blood
dissolved in plasma
as bicarbonate ion
attached to the hemoglobin
how is lung volume and capacity measured
spirometer
what are 5 examples of respiratory diseases
bronchitis
pneumonia
asthma l
enphysema
cystic fibrosis
what is the function of the respitory system
to sustain cellular respiration
