Lab 10 Blood and the BIO202
L
Heart
Student Name: Monilola Anigala
Access Code (located on the lid of your lab kit): AC-I731J5
Pre-Lab Questions:
1. Research the process of erythropoiesis, and explain the role erythropoietin plays. Why is
this a popular “doping” drug for athletes?
Erythropoietin (EPO), a naturally occurring hormone, enhances the body's ability to produce red blood
cells, which transport oxygen throughout the body. This increased oxygen-carrying capacity makes EPO a
popular doping agent among athletes, as it boosts their endurance and performance.
2. How would the hemoglobin content differ in a person living in Philadelphia (Elevation: 39
feet) compared to someone living in Denver (Elevation: 5280 feet)? Why?
Residents of high-altitude cities like Denver possess higher hemoglobin levels in their blood compared to
individuals residing at lower altitudes, such as Philadelphia.
Experiment 1: Heart Valves and Pumps Table 2: Experimental Observations
Observations (with valve) and mL Observations (without valve) and mL H2O
H2O Displaced? Displaced?
The constriction of the neck caused water to be
The straw allowed more water to enter, resulting expelled, diminishing the stream's flow. This
in a displacement of approximately 18 milliliters. resulted in an approximate displacement of 11
milliliters of water.
Post-Lab Questions
1. What happened when you pressed on the balloon stretched over the jar? What does this
result represent?
Squeezing a stretched jar causes water to flow out of the straws on a ball, even though the water is not
flowing continuously. This is analogous to the heart's pumping of blood.
2. What structure in this experiment mimics a heart valve?
The end of the balloon that we cut off in step 1.
3. How did the valve influence the experimental results? If possible, indicate the difference
(in mL) in water displaced with the valve versus without the valve. Does the valve enhance the
water flow, and why?
The pressure exerted within the jar propels water through the straw, influencing the test outcomes. A
higher pressure level leads to an increased water flow through the straw.
4. What other organs or body systems incorporate valves? How are they used?
Blood arteries contain valves that act as one-way gates, ensuring that blood flows in a single direction,
preventing it from flowing backward.
, Lab 10 Blood and the BIO202
L
Heart
L
Heart
Student Name: Monilola Anigala
Access Code (located on the lid of your lab kit): AC-I731J5
Pre-Lab Questions:
1. Research the process of erythropoiesis, and explain the role erythropoietin plays. Why is
this a popular “doping” drug for athletes?
Erythropoietin (EPO), a naturally occurring hormone, enhances the body's ability to produce red blood
cells, which transport oxygen throughout the body. This increased oxygen-carrying capacity makes EPO a
popular doping agent among athletes, as it boosts their endurance and performance.
2. How would the hemoglobin content differ in a person living in Philadelphia (Elevation: 39
feet) compared to someone living in Denver (Elevation: 5280 feet)? Why?
Residents of high-altitude cities like Denver possess higher hemoglobin levels in their blood compared to
individuals residing at lower altitudes, such as Philadelphia.
Experiment 1: Heart Valves and Pumps Table 2: Experimental Observations
Observations (with valve) and mL Observations (without valve) and mL H2O
H2O Displaced? Displaced?
The constriction of the neck caused water to be
The straw allowed more water to enter, resulting expelled, diminishing the stream's flow. This
in a displacement of approximately 18 milliliters. resulted in an approximate displacement of 11
milliliters of water.
Post-Lab Questions
1. What happened when you pressed on the balloon stretched over the jar? What does this
result represent?
Squeezing a stretched jar causes water to flow out of the straws on a ball, even though the water is not
flowing continuously. This is analogous to the heart's pumping of blood.
2. What structure in this experiment mimics a heart valve?
The end of the balloon that we cut off in step 1.
3. How did the valve influence the experimental results? If possible, indicate the difference
(in mL) in water displaced with the valve versus without the valve. Does the valve enhance the
water flow, and why?
The pressure exerted within the jar propels water through the straw, influencing the test outcomes. A
higher pressure level leads to an increased water flow through the straw.
4. What other organs or body systems incorporate valves? How are they used?
Blood arteries contain valves that act as one-way gates, ensuring that blood flows in a single direction,
preventing it from flowing backward.
, Lab 10 Blood and the BIO202
L
Heart
