ANP 1106 Lecture Notes - Lecture 4: Loose Connective Tissue, Basilar Membrane, Rc Lens

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Frank Christinck

Document Summary

Marieb, e. n. human anatomy & physiology 6th ed. Martini, f. h. fundamentals of anatomy & physiology 6th ed. Five special senses: smell, taste, sight, hearing, equilibrium. Housed in complex sensory organs or unique epithelial structures. Housed in nasal cavity, inferior surface of cribriform plate and superior nasal conchae. Bind and respond to odorants (smell chemicals: supporting cells. Replace olfactory receptor cells every 60 days: lamina propria. Contains olfactory glands for mucus production: mucus covers surface of olfactory epithelium. Dendrite ends in knob covered in olfactory cilia. Odorant binding proteins on cilia bind chemical odorant molecules that have diffused into mucus. Each receptor cell has only one type of odorant binding protein but each protein binds several odorants. Humans: ~1000 different odorant binding proteins, distinguish ~10,000 different odors. Axon from each cell passes through olfactory foramina of cribriform plate to synapse on olfactory bulbs (axons =olfactory nerves) Distorted sense of smell due to damage of olfactory pathways, epilepsy, or migraines.