Special Senses- Nose Flashcards
(12 cards)
1
Q
What is a Nose ?
A
A nose is an organ that has nasal cavities that is separated by nasal septum.
2
Q
How many concha does the nose have ?
A
3 concha
- Inferior nasal concha
- Middle nasal concha
- Superior nasal concha
3
Q
What is the functions of concha ?
A
- Increases surface
2. The surface maximises warming, humidification and filtering
4
Q
How many sinuses does the nose have ?
A
- Maxillary sinuses
- Sphenoid sinuses
- Frontal sinuses
- Ethmoidal sinuses
5
Q
What lines the nasal cavities ?
A
Mucous membranes with many blood vessels for heat and moisture
6
Q
What cells secretes mucous in nasal cavities ?
A
Goblet cells
7
Q
What is the term for Sense of Smell ?
A
Olfaction
8
Q
What is Olfaction ?
A
- chemoreceptors in mucous membrane of roof of nasal cavity
- olfactory receptor Enron’s sends impulse via cranial nerve 1
9
Q
Describe the Physiology of Smell
A
- odours dissolves into mucous-coated interior and stimulates olfactory chemoreceptors
- air entering nose is warmed and taken to roof of nasal cavity
- olfactory receptors are stimulated thus perception of smell
10
Q
What is the term for Sense of Taste ?
A
Gustation
11
Q
What is Gustation ?
A
- involves stimulation of chemoreceptors by dissolved chemicals
- closely linked to sense of smell
- papillae aids in sense of taste
- increases salivation and secretion of gastric juice
- has protective function
- sense of taste is impaired when mouth is dry
12
Q
What is spicy food translated to on the Papillae ?
A
- sensed as pain/heat
- tongue will sense capsaicin, pain signal is sent to brain
- frequent eating, sense is less
