Describe the pathway of light through the eyeball and the process of light refraction
What will be an ideal response?
Light travels through the cornea, aqueous humor, lens, and vitreous humor before being focused on the retina during normal vision. Refraction by the cornea and humors is constant, whereas the lens changes its shape to be either more or less convex as needed. The greater the convexity, the more light is bent.
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Which salivary gland empties into the oral vestibule at the level of the second upper molar?
A. Maxillary B. Sublingual C. Palatine D. Parotid E. Submandibular
When the sphincter of the bile duct contracts:
A) bile is propelled into the duodenum. B) bile is forced into the gallbladder for concentration and storage. C) pancreatic juices are prevented from entering the duodenum. D) bile flow in the common hepatic duct is occluded. E) bile flow in the cystic duct is occluded.
What method do cells use to transfer small to moderate-sized water-soluble substances across the membrane?
a. vesicular transport b. carrier-mediated transport c. phagocytosis d. protein-assisted osmosis e. electrical diffusion
The changes an organism undergoes through time is called
A. organization. B. metabolism. C. reproduction. D. growth. E. development.