BIOS 255 Week 3 Lab-Blood Pressure/Blood Vessel Labeling

BIOS 255 Week 3 Lab-Blood Pressure/Blood Vessel Labeling

Student Name

Chamberlain University

BIOS-255: Anatomy & Physiology III with Lab

Prof. Name:

Date

Instructions Overview

The BIOS 255 Week 3 Lab includes two primary activities: a blood pressure measurement lab and a blood vessel labeling and blood flow tracing exercise. Each activity is designed to reinforce key concepts in cardiovascular physiology and anatomy.

Activity Description and Points

• Part 1: Blood pressure lab (attached) – 15 points
• Part 2: Blood vessel labeling and blood flow tracing – 15 points
• Total Points: 30 points

Submission and Due Dates
All assignments are to be submitted on Canvas, with deadlines available on the Canvas calendar or in the Modules section.

Materials Required

1. Equipment

   • Sphygmomanometer
   • Stethoscope
   • Stopwatch
   • Alcohol wipes (for shared equipment)

2. References

   • Saladin, K. (2019). Anatomy and Physiology: The Unity of Form and Function (9th ed.). McGraw-Hill.

Part 1: Blood Pressure Measurements and Calculations

This section focuses on measuring blood pressure and calculating basic pressure and flow parameters during rest and exercise.

Roles and Responsibilities
Each team will assign roles for members:

• Experimental Subject: A healthy participant free from cardiovascular problems, who has avoided smoking or caffeine for 30 minutes prior.
• Blood Pressure Technician: Responsible for measuring blood pressure (roles to be rotated).
• Pulse Rate Technician: Responsible for recording pulse rate (roles to be rotated).

Procedures

1. Read pages 2–5 of the lab packet for detailed instructions.
2. Measure and record blood pressure using the auscultatory method.
3. Complete provided worksheets, including data tables for both resting and post-exercise measurements.
4. Submit one worksheet per team to Canvas, ensuring all team members’ names are included.

Part 2: Blood Vessel Labeling and Blood Flow Tracing

This section involves completing labeling exercises and tracing blood flow through various vessels, chambers, and valves.

Tasks

1. Label parts of blood vessels using a word bank.
2. Trace a drop of blood from the superior mesenteric vein to the left anterior tibial artery, listing vessels and chambers in sequence.
3. Identify whether specific vessels or chambers contain oxygenated or deoxygenated blood.
4. Define and explain three main variables influencing blood flow resistance:
   • Blood Viscosity: Affects flow speed due to erythrocyte and albumin levels.
   • Vessel Length: Longer vessels increase friction, reducing flow and pressure.
   • Vessel Radius: Smaller radii increase resistance due to greater friction.

Summary Table: Key Data and Calculations

Analysis Questions

1. Value of Mean Arterial Pressure (MAP)
   MAP represents the average arterial pressure throughout one cardiac cycle, while pulse pressure (PPulse) is the difference between systolic and diastolic pressures. MAP provides a better indicator of blood flow and tissue perfusion.

2. Post-Exercise Changes
   Increases in PSystolic, PDiastolic, MAP, and CO occur after exercise due to heightened cardiac output driven by the body’s increased oxygen demands.

3. Reason for Changes
   Exercise raises heart rate and stroke volume to enhance oxygen delivery to active muscles, explaining the observed increases in blood pressure metrics.

References

Saladin, K. (2019). Anatomy and Physiology: The Unity of Form and Function (9th ed.). McGraw-Hill.

Beevers, G., Lip, G. Y. H., & O’Brien, E. (2001). Blood pressure measurement: Part II – Conventional sphygmomanometry. BMJ Clinical Research, 322(7293), 1043–1047.

BIOS 255 Week 3 Lab-Blood Pressure/Blood Vessel Labeling

Frese, E. M., Fick, A., & Sadowsky, H. S. (2011). Blood pressure measurement guidelines for physical therapists. Cardiopulmonary Physical Therapy Journal, 22, 5–12.