BIO 181 Exam 4 (Paciulli) Questions and Answers
1. closed circulatory system A circulatory system in which the oxygen-carry-
ing blood cells never leave the blood vessels
2. open circulatory system A circulatory system that allows the blood to flow
out of the blood vessels and into various body
cavities so that the cells are in direct contact with
the blood
3. circulatory system Transports oxygen, waste, nutrients, hormones,
heat, etc... around the body. Exchange of gases
(O2 and CO2).
4. 1. Transport O2 from lungs to tissues; Vertebrate circulatory system's functions
CO2 from tissues to lungs
2. Distribute nutrients from digestive
system to body's cells
3. Transport waste and toxic substances
to liver, where many are detoxified, and
to kidneys for excretion
4. Distribute hormones from organs to
tissues on which they act
5. Regulate body temperature, achieved
partly by adjustments in blood flow
6. Prevent blood loss with clotting mech-
anism
7. Protect body from bacteria and virus-
, BIO 181 Exam 4 (Paciulli) Questions and Answers
es by circulating antibodies and white
blood cells
5. Blood A connective tissue with a fluid matrix called
plasma in which red blood cells, white blood
cells, and cell fragments called platelets are sus-
pended.
6. Plasma Liquid part of blood
7. Buffy coat white blood cells and platelets
8. Hematocrit percentage of blood volume occupied by red
blood cells
9. Anemia A condition in which the blood is deficient in red
blood cells, in hemoglobin, or in total volume.
10. Polycythemia A disorder characterized by an abnormal in-
crease in the number of red blood cells in the
blood
11. Artery A blood vessel that carries blood away from the
heart
12. Aorta Largest artery in the body
13. Arterioles smaller arteries
14. Veins Blood vessels that carry blood back to the heart
15. Valves Flaps of tissue that open and close to allow the
flow of blood in one direction only. The heart's
1. closed circulatory system A circulatory system in which the oxygen-carry-
ing blood cells never leave the blood vessels
2. open circulatory system A circulatory system that allows the blood to flow
out of the blood vessels and into various body
cavities so that the cells are in direct contact with
the blood
3. circulatory system Transports oxygen, waste, nutrients, hormones,
heat, etc... around the body. Exchange of gases
(O2 and CO2).
4. 1. Transport O2 from lungs to tissues; Vertebrate circulatory system's functions
CO2 from tissues to lungs
2. Distribute nutrients from digestive
system to body's cells
3. Transport waste and toxic substances
to liver, where many are detoxified, and
to kidneys for excretion
4. Distribute hormones from organs to
tissues on which they act
5. Regulate body temperature, achieved
partly by adjustments in blood flow
6. Prevent blood loss with clotting mech-
anism
7. Protect body from bacteria and virus-
, BIO 181 Exam 4 (Paciulli) Questions and Answers
es by circulating antibodies and white
blood cells
5. Blood A connective tissue with a fluid matrix called
plasma in which red blood cells, white blood
cells, and cell fragments called platelets are sus-
pended.
6. Plasma Liquid part of blood
7. Buffy coat white blood cells and platelets
8. Hematocrit percentage of blood volume occupied by red
blood cells
9. Anemia A condition in which the blood is deficient in red
blood cells, in hemoglobin, or in total volume.
10. Polycythemia A disorder characterized by an abnormal in-
crease in the number of red blood cells in the
blood
11. Artery A blood vessel that carries blood away from the
heart
12. Aorta Largest artery in the body
13. Arterioles smaller arteries
14. Veins Blood vessels that carry blood back to the heart
15. Valves Flaps of tissue that open and close to allow the
flow of blood in one direction only. The heart's
