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cardiorespiratory system
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a system of the body composed of the cardiovascular and respiratory system
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terms list
cardiorespiratory system
a system of the body composed of the cardiovascular and respiratory system
cardiovascular system
a system of the body composed of the heart, blood, and blood vessels
heart
a hollow muscular organ that pumps a circulation of blood through the body by means of rhythmic contraction
mediastinum
the space in the chest between the lungs that contains all the internal organs of the chest, except the lungs
atrium
the superior chamber of the heart that receives blood from the veins and forces it into the ventricles
ventricle
the inferior chamber of the heart the receives blood from its corresponding atrium and , in turn, forces blood into the arteries
heart rate
the rate which the heart pumps 70-80 beats per minute
right atrium
gathers deoxygenated blood returning to the heart from the entire body
left atrium
gathers reoxygenated blood coming to the heart from the lungs
stroke volume
amount of blood that is pumped out with each contraction of a ventricle75-80 mL/beat
cardiac output
the combination of how many times the heart beats per minute and how much blood is being pumped out with each beat
blood
fluid that circulates in the heart, arteries, capillaries, and veins, which carries nutrients and oxygen to all parts of the body and also rids the body of waste products
blood vessels
network of hollow tubes that circulates blood throughout the entire body
arteries
vessels that carry blood away from the heart
veins
vessels that carry blood from the capillaries toward the heart
arterioles
small terminal branches of an artery, which end in capillaries
capillaries
the smallest blood vessels, which connect venules with arterioles
venules
the very small veins that connect capillaries to the larger veins
respiratory system
a system of organs (the lungs and respiratory passageways) that collects oxygen from the external environment and transports it to the bloodstream
inspiration
the process of actively contracting inspiratory muscles to move air into the body
expiration
the process of actively or passively relaxing inspiratory muscles to move air out of the body
structures of the respiratory pump
bones (sternum, ribs, vertebrae) muscles inspiration( diaphragm, external intercostals sclaenes, sternocleidomastoid, pectoralis minor) muscles expiration (internal intercostals, abdominals)
structures of the respiratory passageways
conduction (nasal cavity, oralcavity, pharynx, larynx, trachea, right and left pulmonary bronchi, bronchioles) respiratory (alveoli, alveolar sacs)
aerobic
requires oxygen
anaerobic
does not require oxygen
bioenergetics
the biology of energy transformations and exchanges within the body, and between it and the environment
adenosine triphophate (ATP)
a cellular structure that supplies energy for many biochemical cellular processes by undergoing enzymatic hydrolysis
phosphagens
ATP and CP
ATP-CP
anaerobic high-intencity, short duration activity 10 seconds
glycolysis
anaerobic moderate-to high-intensity, moderate-duration activities 30-50 seconds
oxidative
aerobic lower intensity, longer duration activities activities greater than 2 minutes
bioenergetics
the biology of energy transformations and exchanges within the body
ATP
a cellular structure that supplies energy for many biomechanical cellular processes by undergoing enzymatic hydrolisis
resting oxygen consumption
3.5 mL of oxygen per kg of body weight per minute
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