Learning objective
Describe accommodation for near objects, where ciliary muscles contract, suspensory ligaments loosen and the lens becomes thicker.
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 near objects, where ciliary muscles contract, suspensory ligaments loosen and the lens becomes thicker
- This point belongs to The human nervous system, especially The eye (biology only).
- You need to be able to describe accommodation for near objects, where ciliary muscles contract, suspensory ligaments loosen and the lens becomes thicker.
- The key ideas to know are lens, accommodation, and suspensory ligaments.
- 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 near objects, where ciliary muscles contract, suspensory ligaments loosen and the lens becomes thicker?
Direct answer
In Biology, this page helps you answer questions about accommodation for near objects, where ciliary muscles contract, suspensory ligaments loosen and the lens becomes thicker 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 near or distant objects.
- ciliary muscles: Muscles that control the shape of the lens in the eye, enabling accommodation for focusing on objects at varying distances.
Common trap
Misunderstanding Accommodation: Remember that for near objects, ciliary muscles contract, suspensory ligaments loosen, and the lens becomes thicker to focus the light correctly on the retina.
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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.
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- 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.
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- 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