BSC 2085
SENSATIONS OBJECTIVES

 

Be able to apply the following terms.

transduction	special senses	lens, iris, pupil	pinna, external auditory canal
adaptation	olfactory cell, olfactory nerve	aqueous and vitreous humors	tympanic membrane, ossicles
general receptors	gustatory cell, facial and glossopharangeal nerves	choroid, ciliary body	cochlea, organ of corti
tactile/pain receptors	photoreceptor cells (rods, cones)	sclera, cornea, conjunctiva	eustachian tubes
baroreceptors	hearing hair cell (vestibulocochlear nerve)	retina	maculae of vestibule
chemoreceptors	(balance) hair cell(vestibulocochlear nerve)	bipolar cell, cells (ganglion ) of optic nerve.	ampulla of semicircular canals

• Describe the anatomy of the general sensory receptors in comparison to special receptors.
• Review location and function of the important general receptors.
• Describe the location, structure, and afferent pathways of taste and olfactory receptors, and explain how these receptors are activated.
• Describe the structure and function of accessory eye structures, eye tunics, lens, and humors of the eye.
• Trace the pathway of light through the eye to the retina.
• Describe the events involved in the stimulation of photoreceptors by light, and compare and contrast the roles of rods and cones in vision.
• Compare and contrast light and dark adaptation, convergence, binocular vision, depth perception and accommodation.
• Describe the structure and general function of the outer, middle, and inner ears. Include eustachian canal.
• Describe the sound conduction pathway to the fluids of the inner ear, and follow the auditory pathway from the organ of Corti to the temporal cortex.
• Explain how the balance organs of the semicircular canals and the vestibule help to maintain dynamic and static equilibrium.
• Classify sensory receptors according to body location, stimulus detected, and structural complexity.

Human Anatomy and Physiology Courses 
at St. Petersburg College
St. Petersburg/Gibbs Campus

10/2003