1. Outline for Lab 4
Vessels Identification in torsos, arms, & legs and break.
Student-led learning
Order doesn’t matter
Arms and legs are less abundant
Notes on BF and BP
How to Measure BP with a sphygmomanometer.
Notes on Normal and abnormal BP #s .
45 min
30 min
15 min

2. Fig

3. Fig

4. Fig

5. Fig

6. Fig

7. Blood Flow (BF) … Blood Pressure (BP)…
measured in elastic arteries where there is a pulse pressure
systolic pressure
diastolic pressure
Fig. 19.2
Fig. 18.1

8. The pressure gradients… Arterial vs. venous… Systemic vs. pulmonary…
Fig. 18.1
Fig. 19.2

9. 4 Factors Facilitating Venous BF
Fig. 19.2
Larger diameter lumens…
Venous valves…

10. 4 Factors Facilitating Venous BF
Fig. 19.8
“milking action” of skeletal muscle
“milking action” of respirations

11. Measuring BP
Measured in elastic arteries where there is a pulse pressure
Systolic…
Diastolic…
How to measure BP using a sphygmomanometer…

12. Hypertension (HTN) What the #s mean…
Chronic (long term)
May be diagnosed based on systolic or diastolic press
If Systolic =
Or if Diastolic = 80-89
Then “Prehypertension”
If Systolic =
Or if Diastolic = 90-99
Then “Stage 1 HTN”

13. Hypertension (HTN) If Systolic = 160 or >
or if Diastolic = 100 or >
Then “Stage 2 HTN”
Dangers of HTN:
 rate of atherosclerosis (plaque)
Therefore…
risk of Stroke
 risk of MI
risk of Aneurysm
risk of Kidney damage
risk of Blindness
risk of CHF (congestive heart failure)
S&S:
Usually none
Possible headaches & blurred vision

14. Hypertensive Crisis Acute, short term, (not chronic)
Excessively high BP
e.g. 220/140, 280/160
Risk of creating aneurysms
Risk of rupturing existing aneurysms
Damage to eyes, kidneys, etc.

15. Hypotension Criteria: Systolic <100 or Diastolic <60
and symptomatic
S&S:
Weak, dizzy, light-headed, lethargic, weak pulse