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A&P Quiz 5

A&P Quiz 5: Blood and the Heart

QuestionAnswer
About 95% of the volume of the formed elements; transport oxygen and carbon dioxide. Red blood cells (RBCs) ; erythrocytes
Most of the remaining 5% of the volume of the formed elements; are involved in immunity. White blood cells (WBCs) ; Leukocytes
Tiny cell fragments; making a negligible contribution to plasma volume; are involved in blood clotting. Platelets ; Thrombocytes
The __________ is a low-pitched sound caused by vibration of the atrioventricular valves and surrounding fluid as the valves close at the beginning of ventricular systole. first heart sound
Which are characteristic of type Rh negative blood? Only under certain conditions will Rh (anti-D) antibodies be present ; Is inherited independent of the ABO group
The cells of the ___________ act as the heart's pacemaker, which establishes the pace for cardiac activity. sinoatrial (SA) node
Which are characteristic of type A blood? Has anti-B antibodies ; Has surface antigen A on its erythrocytes ; Will agglutinate with blood type B
Determine whether each item is a formed element or part of the plasma : White Blood cells, neutrophils, eosinophils, basophils Formed Element
Determine whether each item is a formed element or part of the plasma: Electrolytes, water, proteins, wastes Plasma
The layer of the heart wall composed of cardiac muscle tissue is the myocardium
Which are the least numerous of the leukocytes? basophils
Electric currents in the heart can be detected by means of ______ applied to the skin. electrodes
An instrument called the electrocardiograph _____ these signals and produces a record on a moving paper chart. amplifies
The chart includes three principle deflections above and below the baseline; the P wave, QRS complex, and the _____ wave. T
The P wave is produced when a signal from the SA node spreads through the atria and _____them. depolarizes
The QRS complex is produced when the signal from the AV node spreads through the _______ myocardium and depolarizes the muscle. ventricular
The T wave is generated by ventricular repolarization immediately before ____. Diastole
If agglutination occurs after a blood transfusion, it may indicate The wrong blood type was used
Epicardium Thin serous membrane of the outer surface of the heart ; also known as the visceral layer of serosal pericardium
Endocardium The inner surface of the heart ; Covers surface of heart valves
Myocardium Thick middle layer of the heart; Composed of cardiac muscle cells
Characteristics of cardiac muscle Cells are short and branching ; cells have 1 or 2 nuclei in the center of the cell; they are composed of thick and thin filaments; the functional contractile unit is the sarcomere
In the right atrium, the auricle and anterior wall exhibit obvious muscular ridges called pectinate muscles
Which heart chambers contain deoxygenated blood? right atrium and right ventricle
The __________ valve is between the right atrium and right ventricle. tricuspid
Which are characteristics of type O blood? Has anti-A antibodies ; Has anti-B antibodies ; Has neither surface antigen A nor B on its erythrocytes
components of the formed elements erythrocytes, leukocytes, platelets
erythrocyte transport respiratory gases
lymphocyte includes B- and T-cell; destrocy cancerous and virally infected cells
Basophil Produce histamine and heparine; initiate the inflammatory response
Eosinophil Increase in number during parasitic infections
Monocyte Differentiate into tissue macrophages
Created by: elizabethcosio