Channel 4 Learning



SCIENCE
Science Bank 2: Biology
 
Using the programmes
Programme 15: Responding to Stimuli
Aims
Curriculum Relevance
Programme Outline
Teacher's Notes
Background Information
Key Vocabulary
Printable Activity Sheets
Activity Sheet 1
Activity Sheet 2
Activity Sheet 3
Answers to Activity Sheet 1
Answers to Activity Sheet 2
Answers to Activity Sheet 3
Useful Links
Credits
Programme 16: Homeostasis
TV Transmissions
Feedback
Print Version

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Programme 15: Responding to Stimuli

Activity Sheet 3

The Eye

[See 15/3 for sample layout…need two sheets 15/3i, 15/3ii]

  • Label the eye diagram using the names of each part.
  • Match the descriptions to each part of the diagram.

Name

Description

Ciliary muscles

The most sensitive part of the retina

Choroids

Muscles that change the thickness of the lens

Cornea

A black layer with lots of blood vessels

Vitreous humour

Made of stiff jelly and can change shape to focus light

Conjunctiva

Transparent protective layer at the front of the eye moistened by tears

Retina

Clear part that lets light into the eye

Aqueous humour

Contains light sensitive rod and cone cells

Fovea

Transparent jelly that supports the back part of the eye

Lens

Carries nerve impulses to the brain

Iris

Opening in the iris through which light passes

Suspensory ligaments

Tough, white protective layer

Blind spot

Watery liquid filling the front part of the eye

Pupil

Fibres supporting the lens

Optic nerve

Controls the amount of light entering the eye

Sclera

Part of the retina where the optic nerve enters the eye; there are no light sensitive cells here