A liposome is
A) only an additive to creams and lotions.
B) an additive to creams and lotions and a drug-delivery vehicle.
C) only a type of lipid.
D) only a structural component of cell membranes.
E) only a drug-delivery vehicle.
B) an additive to creams and lotions and a drug-delivery vehicle.
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Terminal bronchioles of the lower respiratory system are lined with
A. keratinized stratified squamous epithelium. B. simple cuboidal epithelium. C. pseudostratified ciliated columnar epithelium. D. stratified columnar epithelium. E. nonkeratinized stratified squamous.
Which vessel has a wall that is about 3/4 smooth muscle and thick external and internal laminae?
A. Large vein B. Conducting artery C. Distributing artery D. Muscular venules E. Medium vein
Which of the following statements accurately describes the pattern of ventricular contraction?
A. The ventricles contract from the base toward the apex moving blood into the great arteries located superior to the ventricles. B. The ventricles contract from the apex toward the base moving blood into the great arteries located inferior to the ventricles. C. The ventricles contract from the base toward the apex moving blood into the great arteries located inferior to the ventricles. D. The ventricles contract from the apex toward the base moving blood into the great arteries located superior to the ventricles.
Of the following structures, the largest in diameter is the ________.
A. secondary bronchus B. tertiary bronchus C. trachea D. primary bronchus E. respiratory bronchiole