Learning objective
Describe accommodation for distant objects, where ciliary muscles relax, suspensory ligaments tighten and the lens becomes thinner.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
The human nervous system
Subtopic
The eye (biology only)
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Quick explanation
Describe accommodation for distant objects, where ciliary muscles relax, suspensory ligaments tighten and the lens becomes thinner
- This point belongs to The human nervous system, especially The eye (biology only).
- You need to be able to describe accommodation for distant objects, where ciliary muscles relax, suspensory ligaments tighten and the lens becomes thinner.
- The key ideas to know are accommodation, suspensory ligaments, and ciliary muscles.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect The eye (biology only) to exam-style questions, flashcards, and revision notes for The human nervous system.
Quick student answer
What are accommodation for distant objects, where ciliary muscles relax, suspensory ligaments tighten and the lens becomes thinner?
Direct answer
In Biology, this page helps you answer questions about accommodation for distant objects, where ciliary muscles relax, suspensory ligaments tighten and the lens becomes thinner within The human nervous system. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are accommodation and ciliary muscles.
Key terms
- accommodation: The process by which the eye adjusts the shape of the lens to focus on objects at different distances.
- ciliary muscles: Muscles that control the shape of the lens in the eye, allowing for focusing on near and distant objects.
Common trap
Misunderstanding Accommodation for Distant Objects: Remember that for distant objects, ciliary muscles relax, which allows the suspensory ligaments to tighten, resulting in a thinner lens.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Describe the nervous system as a system that enables humans to react to their surroundings and coordinate behaviour.
Structure and function
- Describe the pathway in which receptor cells detect stimuli, sensory neurones carry impulses to the CNS, the CNS coordinates a response and motor neurones carry impulses to effectors.
Structure and function
- Explain that the brain and spinal cord form the central nervous system.
Structure and function
- Describe muscles and glands as effectors that bring about responses, with muscles contracting and glands secreting hormones.
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- Explain why reflex actions are automatic and rapid protective responses that do not require conscious thought.
Structure and function