Front | Back |
Cardiovascular
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= deliver nutrients to your entire body to keep your body fueled
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Nervous
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Deliver signals to your entire body to keep your body functioning
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Endocrine
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•works with nervous system to produce hormones to keep your body in homeostasis
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Cardiovascular/circulatory system
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•organ system that circulates blood throughout your entire body to deliver nutrients and pick up waste•
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The –heart
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•this is a large muscle that pumps blood•made of mainly of cardiac muscle4-chamber organ
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–blood vessels
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•network of hollow tubes that transport blood throughout your entire body–located throughout your entire body•can transport blood to your heart or away from your heart• •located head to toeblood flows through these
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–blood
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Fluid connective tissue•contains essential cells and molecules for your body–overall purpose is to service cells of the bodyalso containing cells to help aid in transport, protection, and regulation
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•functions of cardiovascular system
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–transport–protection–regulation
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Transport
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•oxygen to cells of body (respiration)•removal of waste and CO2 (respiration)•transports nutrients (digestion)•transports hormones (endocrine)
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–protection
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•transports cells of immune system (immunity)•blood type (self-immunity)
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–regulation
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•filters waste from kidneys (urinary system)•homeostasis- temperature, pH balance, water and electrolyte levels
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•cardiac cells
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–striated–high number of mitochondria–generate their own signal
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Pacemaker cells
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–keep your heart beating by getting constant signal from your brain to contract and relax
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Hearts characteristics
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Has two halvesright halfleft halfseparated by septum–each half has two chambers
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Upper part of heart
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Atria:
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