Sense Organ Flashcards
5 general senses
Pain
touch
temperature
visceral sensation
proprioception
What type of stimulus and what is sensed Pain
Stimulus: Mechanical, chemical, Thermal
Sensed: Intense stimuli of any type
What type of stimulus and what is sensed touch
Stimulus: Mechanical
Sensed: Touch and pressure
What type of stimulus and what is sensed temperature
Stimulus: Thermal
Sensed: Heat/Cold
What type of stimulus and what is sensed Visceral sensation
Stimulus: Chemical and Mechanical
Sensed: Hunger, thirst, fullness
What type of stimulus and what is sensed proprioception
Stimulus: Mechanical
Sensed: movement and body position
Superficial Temperature
Located in the skin and detect upward and downward changes in skin temperature
Central temperature
Keep tract of the core interior temperature of the body by monitoring the temp of the blood. located in the hypothalamus,
Pain process
nocieption
First step in pain process
Transduction
Transduction
conversion of painful stimuli to a nerve impulse. Occurs at the sensory nerve ending
Second step in pain process
Transmission
Third step in pain process
Modulation
Fourth step in pain process
Perception
transmission is
nerve impulse up the sensory nerve fibers to the spinal cord
Modulation
(changing) of the sensory nerve impulse can occur in the spinal cord and can influence the info the brain receives
Perception
The painful impulses of several areas of the brain.
5 special sense
Taste, smell, vision, equilibrium, and Hearing
2 structures are responsible for equilbirum
semicirular canals and vestiblie
Conjunctival sac is
useful place to deposit ophthalmic medications and potential space moistened by years
structures responsible for hearing are housed in this bone
temporal
structure is thought to enhance vision in dim light in animals
Tapetum lucidum
Scelera
outer fibrous of the eye
Aqueous humor
fluid with a watery consistey
