BIO 252 ACTUAL EXAM QUESTIONS AND
CORRECT ANSWERS COMPLETE STUDY
GUIDE
●● Lumen
Answer: Interior of a tubular structure such as a blood vessel or a portion
of the alimentary canal through which blood, chyme, or other substances
travel.
●● Vein
Answer: Blood vessel that conducts blood toward the heart.
●● Platelets (thrombocytes)
Answer: Aid in blood clotting
●● Leukocytes (white blood cells)
Answer: Involved in immune response.
●● Erythrocytes (red blood cells)
Answer: Transport oxygen and carbon dioxide.
●● Plasma
, Answer: The liquid part of blood, making up about 55% of its volume.
Contains water, proteins, electrolytes, nutrients, hormones, and waste
products.
●● Formed elements
Answer: The cellular components of blood, making up about 45% of its
volume.
●● Albumin
Answer: Plasma protein produced in the liver. Helps regulate colloid
osmotic pressure.
●● Colloid osmotic pressure
Answer: Acts like a fluid magnet; pulls fluid into the blood vessels and
help regulate blood volume and pressure.
●● Erythrocytes (function)
Answer: Transport oxygen and carbon dioxide
●● Erythrocytes (structure and lifespan)
Answer: Bioconcave, no nucleus, no mitochondria, consists of
hemoglobin.
Only lives for 120 days.
CORRECT ANSWERS COMPLETE STUDY
GUIDE
●● Lumen
Answer: Interior of a tubular structure such as a blood vessel or a portion
of the alimentary canal through which blood, chyme, or other substances
travel.
●● Vein
Answer: Blood vessel that conducts blood toward the heart.
●● Platelets (thrombocytes)
Answer: Aid in blood clotting
●● Leukocytes (white blood cells)
Answer: Involved in immune response.
●● Erythrocytes (red blood cells)
Answer: Transport oxygen and carbon dioxide.
●● Plasma
, Answer: The liquid part of blood, making up about 55% of its volume.
Contains water, proteins, electrolytes, nutrients, hormones, and waste
products.
●● Formed elements
Answer: The cellular components of blood, making up about 45% of its
volume.
●● Albumin
Answer: Plasma protein produced in the liver. Helps regulate colloid
osmotic pressure.
●● Colloid osmotic pressure
Answer: Acts like a fluid magnet; pulls fluid into the blood vessels and
help regulate blood volume and pressure.
●● Erythrocytes (function)
Answer: Transport oxygen and carbon dioxide
●● Erythrocytes (structure and lifespan)
Answer: Bioconcave, no nucleus, no mitochondria, consists of
hemoglobin.
Only lives for 120 days.
