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Ch. 17 part 1
Lecture Exam #4
20
Anatomy
Undergraduate 1
07/07/2011

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Cards

Term
What are the 2 types of senses?
Definition
General Somatic Senses and Special Senses
Term
What are 3 examples of general somatic senses?
Definition
Touch (tactile), temperature and pain.
Term
What are the 5 special senses?
Definition
Vision/sight, gustation (taste), olfaction (smell), hearing and equilibrium (balance)
Term
Which 2 special senses are chemical senses?
Definition
Gustation and olfaction
Term
What are the 5 primary taste sensations?
Definition
Sour, Sweet, Bitter, Salty and umani
Term
What chemicals are associated with sour taste?
Definition
Acids
Term
What chemicals are associated with sweet taste?
Definition
Carbohydrates, proteins and fats
Term
What chemicals are associated with bitter taste?
Definition
Alkaloids
Term
What chemicals are associated with salty taste?
Definition
Chloride ions
Term
What are the 2 nerves that sends sensory info to the brain from the tongue?
Definition
Glossopharyngeal and facial nerve
Term
What are lingual papillae?
Definition
Small fingerlike projections on the surface of the tongue
Term
What is the receptor for gustation?
Definition
Taste buds
Term
Where are taste buds located?
Definition
On the papillae - on surface of tongue, cheeks, and throat
Term
Where are the receptors for smell located?
Definition
In nasal cavity, near the ethmoid bone.
Term
What are the receptors for olfaction?
Definition
Olfactory nerve and olfactory foramina.
Term
What is an olfactory cell?
Definition
Neurons which have immobile cilia at the ends called olfactory hairs.
Term
How does the olfactory cell detect an odorant?
Definition
The odorant (chemical) in air gets stuck in the mucus layer, where the olfactory hairs are located and thus detect the odorant.
Term
What are the 5 accessory structures for vision?
Definition
Eyebrows, eyelids, conjunctiva, lacrimal apparatus, and extrinsic eye muscles
Term
What is the lacrimal apparatus?
Definition
A system which produces and drains tears consisting of lacrimal glands, lacrimal ducts, lacrimal canals, lacrimal sacs, and nasolacrimal ducts.
Term
What is the lacrimal gland?
Definition
An exocrine gland located under the frontal bone that secretes tears
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