What cell part is described as flattened membrane sacs and tubes that are believed to be centers for collecting and packaging cell structures and enzymes? cell wall mitochondria chloroplasts cytoplasm golgi complex endoplasmic reticulum

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.