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Do Now: Page 26 Fun Fact of the Day
During this experiment, spiders were exposed to a variety of drugs to help determine their effect on the brain. Spiders who had been given marijuana started out well enough, but were unable to maintain focus. Benzedrine (speed) produced spiders who spun enthusiastically, though no great thought or care was put into the web design. Caffeine, one of the most common stimulants taken by humans, produced an erratic web. Chloral hydrate, an ingredient in sleeping pills, made the spiders doze off after barely getting started on the web.Though this 1995 experiment sought to determine toxicity of drugs, it was a continuation of experimentation of spiders on drugs that had started in 1948 by P. N. Witt.
The Skeletal System What are some functions of the skeletal system?
Bone Structure Periosteum – tough membrane that covers the bone Compact Bone – dense layer of hard bone with minuscule spaces for Haversian Canals Haversian Canals – small channel in compact bone through which nerve and blood vessels run
Bone Structure Spongy Bone – region of resilient, supportive bone tissue within the compact bone with an interlaced pattern that withstands stress Osteocytes – cell embedded in bone that helps build and maintain bones Bone Marrow – blood-forming tissue that produces white and red blood cells
Do Now: Page 12 and 10 Page 927, 1 – 3 Sign and Correct Test and Quiz
