BIO 253 EXAM 3 LATEST 2023-2024 ACTUAL EXAM 100 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES |AGRADE

What happens when rbc break down - ...ANSWER...When dead they transport to the
spleen
Iron And hemoglobin break apart resulting in biliruben
Biliruben released in to the plasma and recirculated to the liver
What antigens does type a blood have and antibodies - ...ANSWER...Antigen a
B antibodies
What antigens does type b blood have and antibodies - ...ANSWER...B antigens
A antibodies
What antigens does type AB blood have and antibodies - ...ANSWER...Type AB
antigens
No antibodies
What antigens does type o blood have and antibodies - ...ANSWER...No antigens
A and b antibodies
five leukocytes - ...ANSWER...neutrophils, lymphocytes, monocytes, eosinophils,
basophils
neutrophils function: inflammatory response - ...ANSWER...Cellular defense 65% wbc
Eosinophil function - ...ANSWER...Cellular defense parasitre worms allergic reaction
Basophil function - ...ANSWER...release histamine and other mediators of inflammation;
contain heparin, an anticoagulant
Lymphocytes functions are? - ...ANSWER...destroy cancer cells, present antigens to
activate other cells in immune system, secrete antibodies, and serve in immune
memory
Monocytes funtion - ...ANSWER...Largest wbc mobile and highly phagocytic
Orgin and function of platelet - ...ANSWER...Homeostasis
Major propertire: agglutination, adehesiveness and aggregation
Starts in bone marrow
Process of hemostasis and clot dissolution - ...ANSWER...Vasoconstriction causes
temp closure of vessel and lessens blood loss
Platelets plug formation after damage or injury
Sticky platelets form plug
Coagulation 3 step
Fibrinolysis
Plasim released by damaged crlls to dissolve clot
Structure and function or pericardial sac - ...ANSWER...Double wall sac contained the
heart and roots of great vessel
2 layers fibrous and serious
Enclosed pericardial cavity which contains pericardial cavity
Function and layers of heart - ...ANSWER...Pericardial - fibrous or serious tough lose
fitting sac parietal and visceral inside covers outside heart
Epicardium outer level
Myocardium thick muscle layer compress heart cavities and great force
Endocardium inner layer
Atrioventricular valve - ...ANSWER...Between atrium and ventricle
Tricuspid valve - ...ANSWER...valve between the right atrium and the right ventricle
bicuspid valve - ...ANSWER...valve between the left atrium and the left ventricle.
What are valves attached to papillary muscles by - ...ANSWER...Cordae tendon
Semilunar valves - ...ANSWER...Prevent blood flowing back in to ventricles from aorta
and pulmonary trunk
Pathway of blood through the heart - ...ANSWER...superior vena cava, inferior vena
cava, right atrium, tricuspid valve, right ventricle, pulmonary artery, lung capillaries,
pulmonary vein, left atrium, mitral valve, left ventricle, aorta
What kind of blood is on right side of heart - ...ANSWER...Deoxygenated
Waves in ekg and function - ...ANSWER...P wave - sa node depolarization atrial
contraction
PR -av node and bungles branches
QRS - perkinje fibers - ventricular contraction
t wave - ventricle repolarization or relaxation
Arteries function - ...ANSWER...carry blood away from the heart
Vein function - ...ANSWER...carry blood to the heart
cappilaries - ...ANSWER...vessels that allow oxygen and nutrients to pass through the
body cells
Sturcture of capillary - ...ANSWER...Small most numerous blood vessel
Exchanges between blood and tissue