BIOL 1902 Lecture Notes - Lecture 5: Depth Perception, Tapetum Lucidum, Retina
20 May 2015
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Component 1: staying alive cont"d: defences cont"d, appearances cont"d, vigilance cont"d. Moose have big ears (excellent hearing) and an elongated snout (an excellent olfactory [smell] sense) An enlarged snout houses more sensory cells and a jacobson"s organ: enlarged snout allows jacobson"s organ in mammals. Have sensory cells on top of mouth which analyze scent: ex. Mouse and other mammals expose the jacobson"s organ by flemen. Eyes on side of head provide larger view of the surroundings: ex. Snowshoe hair has bulging eyes on sides of head: each eye has a field of view. Can almost see behind them ( eyes in the back of their head : ex. Mallard duck"s right and left field of views are more than 180o (they overlap). Total field of view is 360o so they can see in front and behind them at all times. (same as hare).
