Lab 11 The Circulatory System BIO202L
Student Name: JOE BALBINA
Access Code (located on the lid of your lab kit): AC – U8VHJA
Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet.
Submissions without proper formatting, all required photos or sufficient responses will be rejected. Pre-
lab Questions
1. Describe the pathway of blood traveling through the closed system of the circulatory system
starting with the right atrium.
Blood flows from the right atrium through the right ventricle, then to the pulmonary artery, to
the lungs to the pulmonary veins, to the left atrium , to the left ventricle, to the aorta, to the
arteries to the arterioles. From there to the capillaries to the venules to the veins, to the vena
cava and the to the right atrium.
2. What are the main resistance vessels of the circulatory system?
Through dilation and constriction will be the aterioles as the main resistaance vessels.
3. How are they (the resistance vessels you noted in Question 2) controlled?
Sympathetic nervous system causes constriction of arterioles. ADH is also known as vasopressin
in which controls arterioles.
,Lab 11 The Circulatory System BIO202L
EXPERIMENT 1: MICROSCOPIC EXAMINATION OF BLOOD VESSELS
Introduction Questions
For the following questions, provide reasonable estimates as stated. These estimates must be realistic
for credit. (Hint: These estimates are provided in the lab materials, so your responses should be close to
those values.)
1. Give an estimate for how many times the heart beats over the course of a lifetime.
The human heart beat will beat approximately 2.5 billion times in a life time.
2. Give an estimate of how many liters of blood circulate in the human body every minute.
5.6 liters every minute.
3. The heart must constantly deliver oxygen via blood cells to the rest of the cells in the human
body. Provide an estimate of how many cells there are in the human body.
Males have approximately 36 trillion while females have an approximately 28 trillion
, Lab 11 The Circulatory System BIO202L
Data and Observations
1. Label the arrows in the following two slides.
A. - Tunica Adventitia
B. - Tunica Intima.
C. - Tunica Media
D. - Lipids
E. - Tunica Intima.
F. - Tunica Adventitia
Student Name: JOE BALBINA
Access Code (located on the lid of your lab kit): AC – U8VHJA
Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet.
Submissions without proper formatting, all required photos or sufficient responses will be rejected. Pre-
lab Questions
1. Describe the pathway of blood traveling through the closed system of the circulatory system
starting with the right atrium.
Blood flows from the right atrium through the right ventricle, then to the pulmonary artery, to
the lungs to the pulmonary veins, to the left atrium , to the left ventricle, to the aorta, to the
arteries to the arterioles. From there to the capillaries to the venules to the veins, to the vena
cava and the to the right atrium.
2. What are the main resistance vessels of the circulatory system?
Through dilation and constriction will be the aterioles as the main resistaance vessels.
3. How are they (the resistance vessels you noted in Question 2) controlled?
Sympathetic nervous system causes constriction of arterioles. ADH is also known as vasopressin
in which controls arterioles.
,Lab 11 The Circulatory System BIO202L
EXPERIMENT 1: MICROSCOPIC EXAMINATION OF BLOOD VESSELS
Introduction Questions
For the following questions, provide reasonable estimates as stated. These estimates must be realistic
for credit. (Hint: These estimates are provided in the lab materials, so your responses should be close to
those values.)
1. Give an estimate for how many times the heart beats over the course of a lifetime.
The human heart beat will beat approximately 2.5 billion times in a life time.
2. Give an estimate of how many liters of blood circulate in the human body every minute.
5.6 liters every minute.
3. The heart must constantly deliver oxygen via blood cells to the rest of the cells in the human
body. Provide an estimate of how many cells there are in the human body.
Males have approximately 36 trillion while females have an approximately 28 trillion
, Lab 11 The Circulatory System BIO202L
Data and Observations
1. Label the arrows in the following two slides.
A. - Tunica Adventitia
B. - Tunica Intima.
C. - Tunica Media
D. - Lipids
E. - Tunica Intima.
F. - Tunica Adventitia
