CORRECTLY IDENTIFY EACH TRACE, VALVE CLOSINGS AND OPENINGS, AND EACH TIME PERIOD OF THE CARDIAC CYCLE.
(A - G)
A. VENTRICULAR SYSTOLE
B. AORTIC PRESSURE
C. VENTRICULAR DIASTOLE
D. AV AND SEMILUNAR VALVES CLOSED
E. VENTRICULAR SYSTOLE
F. AORTIC SEMILUNAR VALVE OPENS
G. VENTRICULAR PRESSURE
CORRECTLY IDENTIFY EACH TRACE, VALVE CLOSINGS AND OPENINGS, AND EACH TIME PERIOD OF THE CARDIAC CYCLE.
(H - P)
H. AORTIC SEMILUNAR VALVE CLOSES
I. ECG
J. AV VALVE CLOSES
K. AORTIC PRESSURE
L. AV VALVE OPENS
M. VENTRICULAR VOLUME
N. ATRIAL PRESSURE
O. FIRST HEART SOUND
P. SECOND HEART SOUND
DEFINE SYSTOLE
CONTRACTION OF THE HEART CHAMBERS DURING WHICH BLOOD LEAVES THE CHAMBERS; USUALLY REFERS TO VENTRICULAR CONTRACTION
DEFINE DIASTOLE
RELAXATION OF THE HEART CHAMBERS, DURING WHICH THEY FILL WITH BLOOD; USUALLY REFERS TO VENTRICULAR RELAXATION
DEFINE CARDIAC CYCLE
COMPLETE ROUND OF CARDIAC SYSTOLE AND DIASTOLE
WHEN ARE THE AV VALVES CLOSED?
DURING VENTRICULAR SYSTOLE
WHAT EVENT WITHIN THE HEART CAUSES AV VALVES TO OPEN?
VENTRICULAR PRESSURE
WHEN ARE THE SEMILUNAR VALVES CLOSED?
DIASTOLE OF HEART AS A WHOLE (QUIESCENCE) AND DURING ATRIA SYSTOLE
WHAT EVENT CAUSES THE SEMILUNAR VALVES TO OPEN?
VENTRICULAR PRESSURE> PRESSURE IN THE GREAT ARTERIES (AORTA AND PULMONARY TRUNK)LEAVING THEIR CHAMBERS.
ARE BOTH SETS OF VALVES CLOSED DURING ANY PART OF THE CYCLE. IF SO, WHEN?
YES THEY ARE; MOMENTARILY AFTER ATRIAL SYSTOLE AND VENTRICULAR SYSTOLE.
ARE BOTH SETS OF VALVES OPEN DURING ANY PART OF THE CYCLES?
NO THEY ARE NOT
AT WHAT POINT IN THE CARDIAC CYCLE IS THE PRESSURE IN THE HEART HIGHEST?
VENTRICULAR (SYSTOLE) CONTRACTION
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AT WHAT POINT IN THE CARDIAC CYCLE IS THE PRESSURE IN THE HEART LOWEST?
PRESSURE IN THE HEART IS LOWEST AT THE POINT OF VENTRICULAR RELAXATION (DIASTOLE)
WHAT EVENT RESULTS IN THE PRESSURE DEFLECTION CALLED THE DICROTIC NOTCH?
MOMENTARY INCREASE IN AORTIC PRESSURE THAT OCCURS WHEN ITS SEMILUNAR VALVE SNAPS SHUT.
THE LENGTH OF THE NORMAL CARDIAC CYCLE
0.8 SEC
THE TIME INTERVAL OF ATRIAL SYSTOLE
0.1 SEC
THE QUIESCENT PERIOD, OR PAUSE
0.4 SEC
THE VENTRICULAR CONTRACTION PERIOD
0.3 SEC
IF AN INDIVIDUAL'S HEART RATE IS 80 BEATS/MIN, WHAT IS THE LENGTH OF THE CARDIAC CYCLE? WHAT PORTION OF THE CARDIAC CYCLE IS SHORTENED BY THIS MORE RAPID HEART RATE?
0.75 SEC; QUIESCENT PERIOD (VENTRICULAR RELAXATION)
WHAT TWO FACTORS PROMOTE THE MOVEMENT OF BLOOD THROUGH THE HEART?
ALTERNATE CONTRACTION AND RELAXATION OF THE MYOCARDIUM - AND - OPENING AND CLOSING OF HEART VALVES (PRESSURE DEPENDENT)
THE MONOSYLLABLES DESCRIBING THE HEART SOUNDS ARE __1__. THE FIRST HEART SOUND IS A RESULT OF CLOSURE OF THE __2__ VALVES, WHEREAS THE SECOND IS A RESULT OF CLOSURE OF THE __3__ VALVES. THE HEART CHAMBERS THAT HAVE JUST BEEN FILLED WHEN YOU HEAR THE FIRST HEART SOUND ARE THE __4__, AND THE CHAMBERS THAT HAVE JUST EMPTIED ARE THE __5__. IMMEDIATELY AFTER THE SECOND HEART SOUND, BOTH THE __6__ AND __7__ ARE FILLING WITH BLOOD.
1. LUB/DUB
2. AV VALVES
3. SEMILUNAR LAVES
4. ATRIA
5. VENTRICLES
6. L. VENTRICLE
7. R. VENTRICLE
IN ORDER TO AUSCULTATE MOST ACCURATELY, INDICATE WHERE YOU WOULD PLACE YOUR STETHOSCOPE FOR THE FOLLOWING SOUNDS:
CLOSURE OF THE TRICUSPID VALVE
LEFT OR RIGHT STERNAL BORDER OF FIFTH INTERCOSTAL SPACE
IN ORDER TO AUSCULTATE MOST ACCURATELY, INDICATE WHERE YOU WOULD PLACE YOUR STETHOSCOPE FOR THE FOLLOWING SOUNDS:
CLOSURE OF THE AORTIC SEMILUNAR VALVE
RIGHT STERNAL BORDER OF SECOND INTERCOSTAL SPACE
IN ORDER TO AUSCULTATE MOST ACCURATELY, INDICATE WHERE YOU WOULD PLACE YOUR STETHOSCOPE FOR THE FOLLOWING SOUNDS:
APICAL HEARTBEAT
FIFTH INTERCOSTAL SPACE IN LINE WITH MIDDLE OF THE CLAVICLE
WHICH VALVE IS HEARD MOST CLEARLY WHEN THE APICAL HEARTBEAT IS AUSCULTATED?
BICUSPID
DEFINE PULSE
PULSE PRESSURE CAUSED BY THE EJECTION OF BLOOD FROM THE LEFT VENTRICLE INTO THE AORTA PRODUCES A PRESSURE WAVE (PULSE) THAT TRAVELS RAPIDLY ALONG THE ARTERIES.
DESCRIBE THE PROCEDURE USED TO TAKE THE PULSE.
THE PULSE IS THE AMOUNT OF BEATS PER MINUTE THAT YOUR HEART DOES. USE TWO FINGERS TO FIND THE PULSE (THERE ARE DIFFERENT AREAS ON THE BODY THAT THESE CAN BEST BE FOUND, BEST ARE THOSE CLOSEST TO THE SURFACE OF THE SKIN.) MOST COMMON ARE RADIAL AND CAROTID. COUNT THE BEATS FELT FOR A TIME AND MULITPLY TO GET 60 SECONDS. E.G. 15 SEC X 4.
PULSE AT THE WRIST
RADIAL ARTERY
PULSE IN FRONT OF THE EAR
SUPERFICIAL TEMPORAL ARTERY
PULSE ON THE DORSUM OF THE FOOT
DORSALIS PEDIS ARTERY AND POSTERIOR TIBIAL ARTERY.
PULSE AT THE SIDE OF THE NECK
CAROTID ARTERY
WHEN YOU WERE PALPATING THE VARIOUS PULSE OR PRESSURE POINTS, WHICH APPEARED TO HAVE THE GREATEST AMPLITUDE OR TENSION? WHY DO YOU THINK THIS WAS SO?
CAROTID ARTERY; BECAUSE IT IS THE CLOSEST TO THE HEART.
ASSUME SOMEONE HAS BEEN INJURED IN AN AUTO ACCIDENT AND IS HEMORRHAGING BADLY. WHAT PRESSURE POINT WOULD YOU COMPRESS TO HELP STOP BLEEDING FROM EACH OF THE FOLLOWING AREAS?
THE THIGH:
FEMORAL
ASSUME SOMEONE HAS BEEN INJURED IN AN AUTO ACCIDENT AND IS HEMORRHAGING BADLY. WHAT PRESSURE POINT WOULD YOU COMPRESS TO HELP STOP BLEEDING FROM EACH OF THE FOLLOWING AREAS?
THE FOREARM:
BRACHIAL
ASSUME SOMEONE HAS BEEN INJURED IN AN AUTO ACCIDENT AND IS HEMORRHAGING BADLY. WHAT PRESSURE POINT WOULD YOU COMPRESS TO HELP STOP BLEEDING FROM EACH OF THE FOLLOWING AREAS?
THE CALF:
POPLITEAL
ASSUME SOMEONE HAS BEEN INJURED IN AN AUTO ACCIDENT AND IS HEMORRHAGING BADLY. WHAT PRESSURE POINT WOULD YOU COMPRESS TO HELP STOP BLEEDING FROM EACH OF THE FOLLOWING AREAS?
THE THUMB:
RADIAL
HOW CAN YOU TELL BY SIMPLE OBSERVATION WHETHER BLEEDING IS ARTERIAL OR VENOUS?
BRIGHT RED AND SPURTING - ARTERIAL
DARK RED AND OOZING - VENOUS
YOU MAY SOMETIMES OBSERVE A SLIGHT DIFFERENCE BETWEEN THE VALUE OBTAINED FROM AN APICAL PULSE (BEATS/MIN) AND THAT FROM AN ARTERIAL PULSE TAKEN ELSEWHERE ON THE BODY. WHAT IS THIS DIFFERENCE CALLED?
PULSE DEFICIT
DEFINE BLOOD PRESSURE
(BP) TENSION OF THE BLOOD WITHIN THE BLOOD VESSELS; COMMONLY EXPRESSED IN UNITS OF MILLIMETERS OF MERCURY (MM Hg)
IDENTIFY THE PHASE OF THE CARDIAC CYCLE:
SYSTOLIC PRESSURE
VENTRICULAR EJECTION
IDENTIFY THE PHASE OF THE CARDIAC CYCLE:
DIASTOLIC PRESSURE
VENTRICULAR RELAXATION
WHAT IS THE NAME OF THE INSTRUMENT USED TO COMPRESS THE ARTERY AND RECORD PRESSURES IN THE AUSCULTATORY METHOD OF DETERMINING BLOOD PRESSURE?
SPHYGMOMANOMETER
WHAT ARE THE SOUNDS OF KOROTKOFF?
SOUNDS OF KOROTKOFF ARE PRODUCED WHEN BLOOD PRESSURE IS TAKEN. BLOOD FLOW PRODUCES VIBRATIONS IN THE BLOOD AND SURROUNDING TISSUES THAT CAN BE HEARD THROUGH THE STETHOSCOPE, THESE SOUNDS ARE CALLED KOROTKOFF.
WHAT CAUSES THE SYSTOLIC SOUND?
SYSTOLIC SOUND IS THE FIRST SOUND HEARD UNDER PRESSURE. AS THE PRESSURE IS RELEASED AND THE ARTERY CAN NO LONGER STAY CLOSED, AS BLOOD BEGINS TO FLOW THROUGH THE VIBRATIONS MAKE THIS FIRST SOUND.
WHAT CAUSES THE DISAPPEARANCE OF THE SOUND?
DISAPPEARANCE IS CONSIDERED DIASTOLIC BLOOD PRESSURE.
INTERPRET 145/85/82
BP 145/85, PULSE 82 BPM. 145 PRESSURE IT TAKES YOUR BLOOD TO PUSH THROUGH VASCULAR SYSTEM WHILE YOU HAVE IT RESTRICTED. 85 IS LEAST AMOUNT OF PRESSURE NEEDED TO FLOW THROUGH VEINS WITHOUT PRESSURE. 82 IS AMOUNT OF HEART BEATS PER MINUTE. COMPLETED CARDIAC CYCLES (82) IN ONE MINUTE.
DEFINE PULSE PRESSURE
SYSTOLIC PRESSURE - DIASTOLIC PRESSURE
WHY IS THIS MEASUREMENT IMPORTANT? (PULSE PRESSURE)
INDICATED ACTUAL WORKING PRESSURE (AMOUNT OF BLOOD FORCED OUT OF THE HEART DURING SYSTOLE)
HOW DO VENOUS PRESSURES COMPARE TO ARTERIAL PRESSURE? WHY?
VENOUS PRESSURE IS LOWER; BECAUSE THE VEINS ARE FURTHER REMOVED FROM THE PUMPING ACTION OF THE HEART
WHAT MANEUVER TO INCREASE THE THORACIC PRESSURE ILLUSTRATES THE EFFECT OF EXTERNAL FACTORS ON VENOUS PRESSURE? HOW IS THIS PREFORMED?
A PERSON TAKES A DEEP BREATH & MIMICS THE NOTIONS OF EXHALING FORCIBLY BUT W/O ACTUALLY EXHALING; THE GLOTTIS WILL CLOSE AND THE INTRATHORACIC PRESSURE WILL INCREASE
WHAT MIGHT AN ABNORMAL INCREASE IN VENOUS PRESSURE INDICATE? (THINK!)
These factors can increase central venous pressure:
-Decreased cardiac output
-Increased blood volume
-Venous constriction
-Changing from standing to supine body posture
-Forced expiration
-Muscle contraction
WHAT EFFECT DO THE FOLLOWING HAVE ON BLOOD PRESSURE?
INCREASED DIAMETER OF THE ARTERIOLES
DECREASES
WHAT EFFECT DO THE FOLLOWING HAVE ON BLOOD PRESSURE?
INCREASED BLOOD VISCOSITY
INCREASES
WHAT EFFECT DO THE FOLLOWING HAVE ON BLOOD PRESSURE?
INCREASED CARDIAC OUTPUT
INCREASES
WHAT EFFECT DO THE FOLLOWING HAVE ON BLOOD PRESSURE?
HEMORRHAGE
DECREASES
WHAT EFFECT DO THE FOLLOWING HAVE ON BLOOD PRESSURE?
ARTERIOSCLEROSIS
INCREASES
WHAT EFFECT DO THE FOLLOWING HAVE ON BLOOD PRESSURE?
INCREASED PULSE RATE
INCREASES
IN WHICH POSITION (SITTING, RECLINING, OR STANDING) IS THE BLOOD PRESSURE NORMALLY THE HIGHEST? THE LOWEST?
HIGHEST - RECLINING
LOWEST - STANDING
WHAT IMMEDIATE CHANGES IN BLOOD PRESSURE DID YOU OBSERVE WHEN THE SUBJECT STOOD UP AFTER BEING IN THE SITTING OR RECLINING POSITION?
Your blood pressure is higher when your heart is hard at work, pumping blood while your body is moving, keeping balance, etc. (when you're awake and standing.) And when you are reclining, your heart is at rest and doesn't need to work as hard to pump blood through out the bodY
WHAT CHANGES IN THE BLOOD VESSELS MIGHT ACCOUNT FOR THE CHANGE?
Blood vessels can feel the shear stress caused by blood flow. When shear stress increases the blood vessel responds and the diameter becomes larger. Thus in short, changes in blood flow might cause blood vessels to change diameter
AFTER THE SUBJECT STOOD FOR 3 MINUTES, WHAT CHANGES IN BLOOD PRESSURE WERE OBSERVED? HOW DO YOU ACCOUNT FOR THIS CHANGE?
The blood pressure evened out back to normal, took 3 minutes for blood to be distributed normally to and from the heart to body.
WHAT WAS THE EFFECT OF EXERCISE ON BLOOD PRESSURE?
During exercise systolic blood pressure (the upper reading) usually increases gradually. However, regular exercise normally causes routine resting systolic and diastolic blood pressure to decrease
WHAT WAS THE EFFECT OF EXERCISE ON PULSE RATE?
When you are working out, your body is using alot of energy, therefore your heart has to pump faster in order to keep up with the rate of breathing. Sometimes if not enough oxygen is being delivered to each cell, lactic fermentation occurs where lactic acid is produced
DO YOU THINK THESE EFFECTS REFLECT CHANGES IN CARDIAC OUTPUT OR IN PERIPHERAL RESISTANCE?
CARDIAC OUTPUT
WHY ARE THERE NORMALLY NO SIGNIFICANT INCREASES IN DIASTOLIC PRESSURE AFTER EXERCISE?
Diastolic pressure is the pressure in the circulatory system in between heartbeats. The blood isn't at any pressure inbetween beats, whether you've just exercised or are sleeping
WHAT EFFECTS OF THE FOLLOWING DID YOU OBSERVE ON BLOOD PRESSURE IN THE LABORATORY?
COLD TEMPERATURE:
INCREASES BLOOD PRESSURE
WHAT DO YOU THINK THE EFFECT OF HEAT WOULD BE? WHY?
HEAT WOULD DECREASE BLOOD PRESSURE, BECAUSE IT CAUSES YOUR BLOOD VESSELS TO DILATE (OPEN UP)