01 Oct Describe the pathway of blood traveling through the closed system of the circulatory system starting with the right atrium.
Student Name:
Access Code
Pre-Lab Questions:
1. Describe the pathway of blood traveling through the closed system of the circulatory system starting with the right atrium.
2. What are the main resistance vessels of the circulatory system? How are they controlled?
Experiment 1: Microscopic Examination of Blood Vessels
Post-Lab Questions
Label each of the items in the following slide pictures based on your observations.
A-
B-
C-
D-
E-
F-
G-
2. What differences did you observe in the structure of an artery versus the structure of a vein?
3. Explain the direction of blood flow and the type of blood (oxygenated or deoxygenated) found in each vessel in the pulmonary and systemic circuits.
Vessel Direction State of Blood
Artery Away from the heart oxygenated
Arteriole Away from the heart oxygenated
Pulmonary Artery Away from the heart oxygenated
Capillary Away from the heart oxygenated
Venule To the heart deoxygenated
Vein To the heart deoxygenated
Pulmonary Vein To the heart oxygenated
4. Which vessels allow diffusion of oxygen and nutrients across their cell layers?
5. List the vessels in order of ascending pressure within the circulatory system.
Experiment 2: Virtual Model – The Circulatory System
1. In what body region does the aorta originate?
2. Into what organ(s) does the renal artery empty?
3. What artery supplies the chin/jaw region of the head with blood?
4. Is the posterior tibial artery anterior or posterior to the small saphenous vein?
5. What is the name of the artery which branches off from the femoral artery in the pelvic region?
Experiment 3: Virtual Model – Circulatory System Coloring Activity
Insert images in the indicated spaces below:
Circulatory System – Thorax:
Circulatory System – Superior Lower Limbs:
Circulatory System – Inferior Lower Limbs:
Circulatory System – Head:
Experiment 4: Blood Pressure
Activity Blood Pressure (mmHg) Systolic/Diastolic Pulse (beats/minute)
Basal (Normal)
Lying down
After exercise
Post-Lab Questions
1. What is systolic pressure? Diastolic pressure?
2. Why is pressure a sensible reading to measure circulatory health?
3. Explain the “lub-dub” sounds of the heartbeat.
4. Why do blood pressure and heart rate change after exercise?
5. How might the results in Table 2 change if someone else preformed the activities? Why?
6. Why is it important for blood to flow in only one direction?
Experiment 5: Fetal Pig Dissection: The Circulatory System
Post-Lab Questions
1. What is the process that is responsible for moving molecules from an area of high concentration to an area of low concentration? In what part of the circulatory system does this happen?
2. What observations did you make about the fetal pig’s circulatory system?
Insert photo of your pig’s exposed heart, aorta, and jugular vein with your name clearly visible in the background:
