The lungs lie in the ________ cavity
A) dorsal
B) mediastinum
C) pleural
D) pericardial
C
Explanation:
A) There is no dorsal cavity; the spinal cavity is found on the dorsal side.
B) The mediastinum separates the pleural cavities.
D) The pericardial cavity surrounds the heart.
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The process of defecation eliminates
A) a bolus. B) chyme. C) feces. D) ascites. E) bile.
Palytoxin is a very potent toxin from a particular seaweed in Hawaii that locks the carrier proteins of the ion pump system of the cell in an open position. What result would this have on cell function?
A) Sodium cannot enter the cells, and cell metabolism is damaged. B) The cells cannot utilize glucose. C) Phagocytosis is inhibited. D) Diffusion cannot occur. E) The cell cannot concentrate ions to achieve concentrations necessary for cell function.
As sperm travel from their site of production in the testes to the exterior, the sequence of ducts through which they will pass is:
A. rete testis; efferent ductules; vas deferens; ejaculatory duct; urethra. B. efferent ductules; rete testis; vas deferens; ejaculatory duct; urethra. C. rete testis; efferent ductules; vas deferens; urethra; ejaculatory duct. D. rete testis; afferent ductules; ejaculatory duct; vas deferens; urethra. E. rete testis; ejaculatory duct; efferent ductules; vas deferens; urethra.
Pneumonectomy refers to
A. a bacterial infection of the lower respiratory tract. B. collapsing of a lung due to a chest wound allowing outside air in the pleural space. C. the surgical removal of a lung or lobe of a lung. D. the constriction of lung tissue caused by fibrosis.