Revision Flashcards
Describe the neuron composition of the optic disk
Area of retina where optic nerve (neuron axons) exit eye. No photoreceptors (rods, cones) no vision
Describe the neuron composition of the fovea
Centre of macula
Highest concentration of cones (photoreceptors)
Name the duct that connects the eye with the nasal cavity
Nasolacriminal duct
Explain why it is good practise to block off the nasolacrimal duct when administering eye drops
Prevent external medication becoming an internal medication
Explain why upper respiratory tract infections often lead to problems with the middle ear
Pathogens spread from nosopharynx to middle ear through auditory tube
Explain the consequences of the hair cells in the spiral organ being damaged
Hearing loss
Name the subdivision of the ANS that enables the body to manage unusual stimuli
Sympathetic
List the functions of the E division (flight, flight, freeze)
Exercise
Excitement
Emergency
Embarrassment
Name the subdivision of the ANS that conserves energy, calms the body, acts more locally and maintains daily necessary functions
Parasympathetic
List the functions of this D division (housekeeping)
Digestion
Diuresis
Defaecation
Taste cells in the taste buds are known as gustatory cells
True
Semi circular ducts monitor rotational movements of the head
True
The vestibule (otolithis) is sensitive to gravity and linear acceleration
True
The inner ear contains the ossicles (malleus, incus and stapes)
False
The photoreceptors of the eye are known as rods and plates
False
The effects of the parasympathetic or D division for the ANS are more localised and specific than the sympathetic
True
The sympathetic nervous system is often referred to as the “fight or flight” system or the E divisions of the ANS
True
The sympathetic nervous system stimulates digestion
False
Things we see with the left eye are perceived only in the right occipital lobe
False
The middle ear is filled with air, but the membranous labyrinth of the cochlea and semi circular canals are filled with liquid (endolympth and perilymph)
True
An adren medication would mimic
Sympathetic Nervous system
A cholinergic medication would mimic
Parasympathetic nervous system
