CH.3 CARDIORESPIRATORY SYSTEM Flashcards
SYSTEM OF BODY COMPOSED OF CARDIOVASCULAR AND RESPIRATORY SYSTEMS
CARDIORESPIRATORY SYSTEM
SYSTEM OF THE BODY COMPOSED OF THE HEART, BLOOD AND BLOOD VESSELS
CARDIOVASCULAR SYSTEM
INCLUDES TRACHEA, BRONCHI, ALVEOLI AND LUNGS
RESPIRATORY SYSTEM
WORK TOGETHER TO PROVIDE BODY WITH ADEQUATE O2 AND NUTRIENTS AND TO REMOVE WASTE PRODUCTS SUCH AS CO2 FROM CELLS
CARDIORESPIRATORY SYSTEM
HOLLOW MUSCULAR ORGAN THAT PUMPS A CIRCULATION OF BLOOD BY MEANS OF RHYTHMIC CONTRACTION
HEART
SPACE IN THE CHEST BETWEEN THE LUNGS THAT CONTAINS ALL THE INTERNAL ORGANS OF THE CHEST EXCEPT THE LUNGS
MEDIASTINUM
HEART IS CONTAINED WHERE ?
MEDIASTINUM
IRREGULARLY SPACED DARK BANDS BETWEEN CARDIAC CELLS
INTERCALATED DISCS
HELP HOLD MUSCLE CELLS TOGETHER DURING CONTRACTION AND CREATE AN ELECTRICAL CONNECTION BETWEEN THE CELLS THAT ALLOWS THE HEART TO CONTRACT AS ONE FUNCTIONAL UNIT
INTERCALATED DISCS
TYPICAL RESTING HR
70-80 BPM
SPECIALIZED AREA OF CARDIAC TISSUE, LOCATED IN RIGHT ATRIUM OF HEART, WHICH INITIATES ELECTRICAL IMPULSES THAT DETERMINE HEART RATE; “PACEMAKER” OF THE HEART
SINOATRIAL (SA) NODE
SMALL MASS OF SPECIALIZED CARDIAC MUSCLE FIBERS, LOCATED IN THE WALL OF RIGHT ATRIUM OF HEART, RECEIVES HEARTBEAT IMPULSES FROM SA NODE AND DIRECTS THEM TO WALLS OF VENTRICLES
ATRIVENTRICULAR (AV) NODE
SUPERIOR CHAMBER OF THE HEART THAT RECEIVES BLOOD FROM THE VEINS AND FORCES IT INTO THE VENTRICLES
ATRIUM
INFERIOR CHAMBER OF THE HEART THAT RECEIVES BLOOD FROM ITS CORRESPONDING ATRIUM AND IN TURN FORCES BLOOD INTO THE ARTERIES
VENTRICLE
STIMULATES THE MECHANICAL MYOCARDIAL CELLS TO CONTRACT IN A REGULAR RHYTHMIC PATTERN
ELECTRICAL CONDUCTION SYSTEM
TRANSFER IMPULSES FROM SA TO AV NODE
INTERNODAL PATHWAYS
DELAYS IMPULSES BEFORE ALLOWING IT TO MOVE ON TO VENTRICLES
AV NODE
AV BUNDLE CONDUCTS IMPULSES TO VENTRICLES FOR CONTRACTION VIA WHAT ?
VIA LEFT AND RIGHT BUNDLE BRANCHES OF THE PURKINJE FIBERS
SEPARATES THE ATRIA
INTERATRIAL SEPTUM
SEPARATES THE VENTRICLES
INTERVENTRICULAR SEPTUM
REFERRED TO AS PULMONIC SIDE, RECEIVES BLOOD FROM BODY THAT IS LOW ON O2 AND HIGH IN CO2 (DEOXYGENATED) AND PUMPS IT TO THE LUNGS
RIGHT SIDE OF HEART
REFERRED TO AS SYSTEMIC SIDE, PUMPS BLOOD HIGH ON O2 AND LOW IN CO2 (OXYGENATED) TO REST OF BODY
LEFT SIDE OF HEART
GATHERS DEOXYGENATED BLOOD RETURNING TO HEART FROM ENTIRE BODY
RIGHT ATRIUM
GATHERS OXYGENATED BLOOD COMING TO HEART FROM LUNGS
LEFT ATRIUM
HAS THIN WALLS AND PUMPS UNDER LOW PRESSURE
RIGHT VENTRICLE
THICK WALLS AND PUMPS UNDER HIGH PRESSURE
LEFT VENTRICLE
ATRIOVENTRICULAR VALVES
TRICUSPID AND MITRAL VALVES
SEMILUNAR VALVES
PULMONARY AND AORTIC VALVES
AMOUNT OF BLOOD PUMPED OUT OF HEART WITH EACH CONTRACTION
STROKE VOLUME
DIFFERENCE BETWEEN VENTRICULAR END DIASTOLIC VOLUME (EDV) AND END SYSTOLIC VOLUME (ESV)
STROVE VOLUME (SV)
FILLED VOLUME OF VENTRICLE BEFORE CONTRACTION
END DIASTOLIC VOLUME (EDV)
RESIDUAL VOLUME OF BLOOD REMAINING IN VENTRICLE AFTER EJECTION
END SYSTOLIC VOLUME (ESV)
TYPICAL HEART, EDV AND ESV
EDV= 120 ML BLOOD ESV= 50 ML
RATE AT WHICH HEART PUMPS
HEART RATE (HR)
HR X SV, OVERALL PERFORMANCE OF HEART
CARDIAC OUTPUT (Q)
VOLUME OF BLOOD PUMPED BY HEART PER MIN (ML BLOOD/MIN)
CARDIAC OUTPUT
FLUID THAT CIRCULATES IN HEART, ARTERIES, CAPILLARIES AND VEINS AND CARRIES NUTRIENTS AND O2 TO ALL PARTS OF BODY, ALSO RIDS BODY OF WASTE PRODUCTS
BLOOD
BLOOD HELPS REGULATE WHAT ?
BODY TEMPERATURE, FIGHT INFECTIONS AND REMOVE WASTE PRODUCTS