Lab Quiz 2: Labs 4, 5, 6 Flashcards
Identify the arteries


Blood oxygen saturation level (SpO2)
- Describe
- What is used to measure it?
- Amount of oxygen present in blood compared to the maximum amount of oxygen the blood could contain
- Measured using a pulse oximeter
Blood pressure
- Describe
- Where is it commonly measured?
- Normal range
- Amount of pressure exerted by the blood as it pushes against blood vessel walls
- Rises and falls as the heart contracts and relaxes
- Commonly measured in the brachial artery
- Normal range: 110-130 / 75-85 mm Hg






Identify the veins




Cardiac output formula
Stroke Volume (ml) * Heart Rate (beats/min) = Cardiac Output
Which artery is used to measure the carotid pulse rate?
Common carotid artery
Deoxyhemoglobin
- Describe
- Hemoglobin that is not bound to oxygen
- Less oxygenated blood appears dark red in color
Describe how the pulse is generated
- As blood is forced out of the left ventricle, it expands the elastic arteries
- Blood moves through the arterial system
Diastolic blood pressure
- Describe
The pressure measured when the ventricles relax
Dubb sound
- Describe
- What creates the sound
- Second sound of the heart beat (S2)
- Sound is shorter and sharper than S1
- Associated with the closure of the semilunar valves
What is used to listen (auscultate) for the S1 and S2 sounds?
Stethoscope
What SpO2 level is considered to be that of hypoxemia?
- < 90% SpO2
Identify #1

Pericardium
Identify #1
Atrioventricular mitral valve
Identify #1
Brachiocephalic trunk
Identify #1
P-wave
Identify #10

Superior mesenteric artery
Identify #10
Interventricular septum
Identify #10a

Right venticle
Identify #10b

Left ventricle
Identify #11

Apex of heart
Identify #11

Renal arteries (right & left)
Identify #12
Right atrium
Identify #12

Common iliac arteries (right & left)
Identify #12a

Right atrium
Identify #12b

Left atrium
Identify #13

Interventricular septum
Identify #13

External iliac arteries (right & left)
Identify #14
Apex of the heart
Identify #14

Internal iliac arteries (right & left)
Identify #14a

Right atrioventricular valve (tricuspid)
Identify #14b

Left atrioventricular valve (bicuspid)
Identify #15

Femoral arteries (right & left)
Identify #15

Papillary muscle
Identify #16

Chordae tendinae
Identify #16a

Superior vena cava
Identify #16b

Inferior vena cava
Identify #17

Brachiocephalic veins (right & left)
Identify #17b

Semilunar valve (aortic)
Identify #18

Subclavian veins (right & left)
Identify #18

Subclavian veins (right & left)
Identify #19

Internal jugular veins (right & left)
Identify #1b

Abdominal aorta
Identify #2
Ascending aorta
Identify #2

Heart
Identify #2

Brachiocephalic artery
Identify #2
Papillary muscles
Identify #2
T-wave
Identify #20

External jugular veins (right & left)
Identify #21

Axillary veins (right & left)
Identify #22

Brachial veins (right & left)
Identify #23

Renal veins (right & left)
Identify #24

Common iliac veins (right & left)
Identify #24

Common iliac veins (right & left)
Identify #24

Common iliac veins (right & left)
Identify #25

Internal iliac veins (right & left)
Identify #25

Internal iliac veins (right & left)
Identify #26

External iliac veins (right & left)
Identify #26

External iliac veins (right & left)
Identify #27

Femoral veins (right & left)
Identify #3
Left common carotid a.
Identify #3
Left auricle
Identify #3
Q-T interval
Identify #3a

Right common carotid artery
Identify #3a

Aortic arch
Identify #3b

Brachiocephalic artery
Identify #3b

Left common arotid artery
Identify #3c

Left common carotid artery
Identify #3d

Left subclavian artery
Identify #4
P-Q segment
Identify #4

Pulmonary trunk
Identify #4
Left brachiocephalic v.
Identify #4
Chordae tendinae
Identify #4a

Right subclavian artery
Identify #4b

Left subclavian artery
Identify #4b

Left subclavian artery
Identify #5
Left atrium
Identify #5

Axillary arteries (left & right)
Identify #5
Left subclavian a.
Identify #5a

Superior vena cava
Identify #5a & 5b

Superior and inferior vena cavae
Identify #6
Aortic arch
Identify #6

Brachial arteries (left & right)
Identify #6a

Right coronary artery
Identify #6b

Left coronary artery
Identify #7

Internal carotid arteries (right & left)
Identify #8

Right & left pulmonary vein
Identify #8

External carotid arteries (right & left)
Identify #9

Celiac trunk
Identify #9a

Right auricle
Identify #9b

Left auricle
Identify 1a

Aortic arch
Identify #1b

Thoracic aorta
Identify A
Finger sensor
Identify K

Kidneys
Identify the following
Identify the parts of the heart
Identify #12

Common iliac arteries (right & left)
Korotkoff sounds
- Describe
- How are they detected?
- Determines systolic and diastolic pressures
- Detected using a sphygmomanometer
Label the heart
List the artery & vein layers
- Tunica intima/interna
- Tunica media
- Tunica adventitia/externa
Lubb
- First sound (S1)
- Produced when the atrioventricular valves close
- Louder and more prolonged than S2 sound
Manual blood pressure procedure
- Wrap the cuff around the subject’s arm, above the elbow
- Inflatable portion of the cuff is on the anterior medial side of the arm
- Clean the earpieces of the stethoscope with an alcohol swab before use
- Place the diaphragm of the stethoscope along the medial elbow
- Hold the rubber squeeze bulb so that the attached rubber tubing leads away from you. Turn the metal dial clockwise until it is completely closed
- Pump the cuff up to about 150 mm Hg and listen carefully – you should not hear any sound at this point since the brachial artery is now closed, and there is no blood flowing through the blood vessel
- Gradually release the pressure so that the needle on the pressure gauge descends very slowly
- Listen very carefully for the first sound that you hear, and note the pressure at which this first sound occurs – this pressure corresponds to systolic blood pressure.
- Continue to slowly release the pressure
- Listen for the sounds to disappear
- Note the pressure at which this occurs – this pressure corresponds to diastolic blood pressure.
Name the test that examines the electrical activity of the heart through skin conductance
Electrocardiography
Oxyhemoglobin
- Hemoglobin bound to four oxygen molecules
- Well oxygenated blood appears bright red
Parts of a stethoscope
- Earpieces
- Diaphragm
Note: When putting on the stethoscope, the earpieces should be angled in a forward direction
Physiological splitting of the S2
- During inspiration, S2 (dubb) sound splits into two separate sounds
- Diaphragm muscle lowers, creating negative pressure in the chest to bring in air
- Brings more venous blood back to the right atrium and right ventricle
- Takes longer for the right ventricle to squeeze the extra blood into the pulmonary arteries, and it takes longer for the pulmonary valve to close
- The closing of the pulmonary valve is slightly later than the aortic valve, and that’s called the physiologic splitting of the S2
Pulse oximeter
- Can detect both pulse rate and SpO__2
- Projects two different wavelengths of light through the tissue
- Sensor picks up color differences as well as color changes caused by varying amounts of oxyhemoglobin and deoxyhemoglobin
- Color difference can be used to determine the % of oxygen saturated hemoglobin (SpO2) present in the blood
Pulse pressure formula
Systolic BP (mmHg) – Diastolic BP (mmHg) = Pulse Pressure
Which artery is used to measure the pulse rate?
Radial artery
Sphygmomanometer
- Usually called a blood pressure cuff
- Most commonly used instrument to measure blood pressure
Sphygmomanometer procedure
- Place cuff around the arm
- Inflate the pressure high enough to completely block blood flow through the brachial artery
- At this point, there are no sounds heard when listening with the stethoscope because there is no blood flowing through the artery
- As the pressure is gradually released and the blood vessel first opens, blood will spurt through the artery, even though it is still partially closed
- The turbulence created by the spurting blood causes the first Korotkoff sound heard
- The pressure at which the first sound is heard corresponds to systolic blood pressure
- As the pressure continues to decline, the sounds may become even louder because of greater blood turbulence, but eventually the sounds completely disappear as the artery fully opens, and the blood flows freely without turbulence
- The pressure at which the sounds first stop represents the diastolic blood pressure
SpO2 ranges
- Normal = 95% - 100%
- < 92% indicates inadequate oxygen levels in the blood typically caused by illness and can indicate respiratory distress
- < 90% is hypoxemia
- Supplemental oxygen therapy may be prescribed < 92%
Stroke volume formula
Pulse Pressure (mmHg) * 1.7 ml/mmHg ∙ beat = Stroke Volume
Systolic blood pressure
The pressure measured at the moment the ventricles contract
Tunica adventitia/externa
- Describe
- Tissue type
- Most superficial layer
- Dense irregular CT with collagen fibers running in all directions for strength in many different directions (looks like squiggly lines)
Tunica intima/interna
- Describe
- Tissue types
- Innermost layer and lines the lumen of the blood vessels
- Simple squamous epithelium (provides a smooth surface for the blood to “slide past”) and a thin layer of areolar CT (basement membrane) to “stick it to the Tunica media”
- Continuous with the endocardium, makes-up the capillaries and is collectively referred to as the endothelium
Tunica media
- Describe
- What is it responsible for?
- Tissue types
- Middle layer
- Responsible for vasodialation and vasoconstriction of the blood vessels
- Made of smooth muscle and elastic fibers
What causes the S1 sound?
It is caused by the atrioventricular valves closing at the beginning of systole
What causes the S2 sound?
- The aortic and pulmonary valves closing, at the beginning of diastole
What does a pulse oximeter measure and what do the measurements mean?
- Pulse/heart rate
- The number of times the heart beats per minute
- SpO2
- Measures the amount of oxygen in your RBCs
- The % saturation of hemoglobin in peripheral blood with oxygen as measured through the nail bed with a red light
- Maximum value is 100%
- Measures the amount of oxygen in your RBCs
What is the avg pulse rate of an adult?
60-100 bpm
What is this?
Pulse oximeter
What procedure is shown here?
Pulse rate measurement
What vessel is being used here?
Left brachial a.
Where will you hear the mitral valve closing?
- Where the mid clavicular line intersects with the 5th intercostal space
Where will you hear the right aortic valve closing?
2nd intercostal space (2nd & 3rd ribs)
Where will you hear the right pulmonary valve closing?
Left 2nd intercostal space at the left upper sternal border
Where will you hear the tricuspid valve closing?
4th & 5th rib next to the left lower border of the sternum
Which EKG wave / segment / interval indicates the depolarization of the atria?
P-wave
Which EKG wave / segment / interval indicates the repolarization of the ventricles?
T-wave
Which EKG wave / segment / interval is the time between the end of the p-wave and the beginning of the Q-wave?
P-Q segment