Lecture 16. Senses. What do we respond to? Stimulus: Pain Mechanical Temperature Chemicals Electromagnetic Awareness of stimulus = _______________ Where are sensory receptors located? Interoceptors: Exteroceptors:. An interoceptor which monitors changes in blood pressure
Size and Shape- similar to a postage stamp.
Location- roof of the nasal cavity.
Cell Division- replaced every 60 days.
Sensitivity- 1,000 different types of receptors
Stratified squamous epith
View with Ophthalmoscope
Close objects are seen clearly.
Long eyeball causes image to focus in front of the retina.
Distant objects are seen clearly.
Short eyeball causes image to focus behind retina.
Image is blurred.
Irregular curvature of the cornea or lens causes light rays to focus unevenly.
Colors cannot be distinguished.
75% of people have poor green perception.
8-10% of males, <1% females.
A lack of or reduced number of one of the cone types.