PTC/ Skin Plaque Tings....
Fox's discovery stimulated geneticists to evaluate families for the distribution of 'taste blindness' and the results of these and later studies led to the conclusion, How would you indicate the difference between the dominant allele and the recessive allele?
Dominant Allele -T
Recessive Allele- t
. Individuals with two recessive alleles, tt, are nontasters
Where are Exteroceptors mostly found?
Most exteroceptors are found on the skin and also include the propioceptors.
What is Conjunctivitis?
§Conjunctivitis- is an inflammation of the double membrane that surrounds the eye ball, the Conjunctiva.
What are the three parts of the ear? What does the outer ear consist of?
The ear consists of three parts:
The Outer ear.
The Middle ear.
The Inner ear.
The Outer ear consists of the Auricle or Pinna and the External Auditory canal.
What is a Sty?
§Sty- inflammation of the ciliary (sweat) gland or a small sebacous (oil) gland
What is the function of the BULB OF KRAUSE?
TOUCH AND LIGHT PRESSURE
Name two structures that are responsible for light touch
§Tactile/ Merkel discs- light touch.
§Root hair plexuses- light touch.
§Messiner’s corpusles/ Tactile Corpusles- light touch.
§Krauses’s end bulbs (type of messiner’s)- light touch.
What test is used to test color vision? Describe the test.
Ishihara Plates
They are made of dot patterns composed of primary colors. These dot patterns represent a symbol that is superimposed on a background of randomly mixed colors. The test can determine certain abnormalities in a person's color vision.
When sound is drawn into the ear and go through the external auditory canal, where does it go next?
Tympanic membrane
NOTE: PATHWAYS ARE SO SERIOUS DURING ALL THESE EXAMS SO REMEMBER THEM OR YOUR SCREWED!
A tuft of hair cells are encased in ____________ ____________?
At the base of each canal is an Ampulla, which contains a tuft of Hair cells encased in a gelatinous Cupulla
GENERAL SENSE OF PAIN, TEMPERATURE, ITCH, TICKLE AND PRESSURE, what is the structure?
FREE DENDRITIC NERVE ENDINGS
Define Adaptation
Adaptation is a prolonged period of stimulus causing receptor discharge to slow and sensation to stop. Two examples are the smelling of a strong odor, which fades over time, or the putting on of cloths and then not feeling the cloths on the skin over time.
Pain receptors adapt very little
§medial eye movements means the sense of vision is _____________?
§Convergence is medial eye movements.
What are the properties of a sweet tasting food?
(Oh-, sugars, proteins, amino acids).
What are the two test used for hearing and equilibrium?
Weber and Rinne Test