Eye
What is the outermost layer of the eye?
Sclera
Name the 3 auditory ossicles
Malleus, incus, stapes
Olfaction
Papillae
Which receptors respond to movement?
Mechanoreceptors
Which layer of the eye contains the rods and cones?
What 3 structures compose the outer ear
Pinna (auricle), external auditory canal (external acoustic meatus), tympanic membrane (eardrum)
What are the chemicals called that stimulate olfactory receptors?
Odorants
On the sides of the papillae
Which touch and pressure receptor is responsible for itching?
Free nerve endings
What is the function of the iris?
To control the amount of light entering the pupil
What is the function of the auditory ossicles?
To amplify the sound waves from the tympanic membrane to the cochlea
Which cranial nerve is responsible for our sense of smell?
Olfactory nerve
What are the chemicals called that stimulate our gustatory receptors?
Tastants
Which receptor is responsible for heavy pressure?
Pacinian corpuscles
What area of the eye has the highest concentration of cones?
Fovea centralis
The receptors for hearing are located in which structure?
Cochlea
Which lobe is responsible for olfaction?
Frontal lobe
What are the 5 taste sensations?
Sweet, salty, sour, bitter, umami
Which receptors are sensitive to tissue damage
Pain receptors
What is the function of the ciliary muscles?
To control the size and shape of the iris
The receptors for dynamic equilibrium are located in which structure ?
Semicircular canals
Explain the physiological processes involved in smelling. (Summarize the steps in order)
1. Odorants enter the nasal cavity
2. Odorants dissolve in the mucus
3. Receptors in the roof of the nasal cavity detect the odorants
4. Olfactory nerve transmits signal to the brain
5. The sense of smell is detected in the frontal lobe
Which papillae do not contain taste buds?
Filiform
What is vertigo?
The sensation of spinning or dizziness caused by problems in the inner ear or brain