Sense Organs Flashcards
Sense organs respond to 4 types of stimuli
Mechanical, thermal, electromagnetic, and chemical
What are the 5 general senses
- Visceral sensations
- Touch/pressure
- Temperature
- Pain
- Proprioception
What are the 5 special senses
- Taste
- Smell
- Hearing
- Equilibrium
- Vision
Visceral sensations are…
Hunger/thirst
What is the stimuli for visceral sensations
Chemical and Mechanical
Touch/pressure is…
Light contact to deep pressure
What is the stimuli for touch/pressure
Mechanical
What is the stimuli is temperature
Thermal
Pain receptors are called
Nociceptors
What is the stimuli used for pain?
Mechanical, thermal, and chemical
What is proprioception?
Sense of body position and movement
General anesthesia is…
Complete loss of sensory perception
Local anesthesia is…
Loss of sensation in a generalized area
Taste is also called
Gustatory sense
What is the stimuli for taste?
Chemical
Smell is also called
Olfactory sense
What is the stimuli for smell
Chemical
Hearing is also called
Auditory sense
What is the stimuli for hearing
Mechanical
The external ear is composed of…
Pinna, external auditory canal, and tympanic membrane
The middle ear is composed of…
Ossicles (malleus, incus, stapes)
The inner ear is composed of…
Semicircular canals, Vestibule, Oval and round window, cochlea, and organ of corti
The outer fibrous layer of the eye is composed of…
Cornea & sclera
The middle vascular layer of the eye is composed of…
Choroid, Iris, & Ciliary body
The inner nervous layer of the eye is composed of…
Retina (contains the rods & cones)
The aqueous compartment is located in the _____ of the eye
Front
The vitreous compartment is located in the ____ of the eye
Back
What is the function of the lens?
Functions to focus a clear image on the retina
What is the function of the retina?
Where the image is formed, sensed, and converted to nerve impulses
Rods are more sensitive to…
Light
Cones are more sensitive to…
Color
Extraocular structures include…
Conjunctiva, eyelids, tear production/drainage, muscles that move the eye
The conjunctiva is…
A thin, transparent membrane that covers the front of the eyeball
Glaucoma’s occur when…
What animal does is occur mostly in?
The aqueous humor is not draining properly
Dogs
Cataracts occur in the…
Lens
