The Eye Flashcards
effector
an organ (muscle or gland) that brings about a response
receptor cell
a cell that senses a stimulus and transmits the message along
stimulus
a detectable change in the environment
response
a change brought about following a stimulus
reflex
involuntary and almost immediate response to a stimulus
neurone
(nerve cells)
specialised cells which transmits information through nerve impulses
nerve
(nerve cell = a single neuron)
a bundle of several neurones
nerve impulses
electrical signal (current) that travels along a neurone
label this eye
![](https://s3.amazonaws.com/brainscape-prod/system/cm/143/837/414/q_image_thumb.png?1659525902)
![](https://s3.amazonaws.com/brainscape-prod/system/cm/143/837/414/a_image_thumb.jpg?1659462642)
label this structure of an eye
![](https://s3.amazonaws.com/brainscape-prod/system/cm/143/837/558/q_image_thumb.png?1659525903)
![](https://s3.amazonaws.com/brainscape-prod/system/cm/143/837/558/a_image_thumb.png?1659462644)
conjunctiva
= layer covering the cornea and sclera
helps to lubricate the eye
cornea
= clear covering of eye
helps to refract and focus on light
lens
= transparent structure behind pupil
refracts and focuses on light
pupils
= hole in centre of iris
controls amount of light entering eye
iris
= pigmented tissue, sphincter
controls amount of light entering eye
suspenory ligaments
= ligaments connecting ciliary muscle and lens
involved in controlling accomodation (focusing)