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CBSE Questions for Class 11 Medical Biology Neural Control And Coordination Quiz 16 - MCQExams.com
CBSE
Class 11 Medical Biology
Neural Control And Coordination
Quiz 16
Which of the following statements is correct?
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Cornea is an external, transparent and protective proteinaceous covering of the eye-ball
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Cornea consists of dense connective tissue of elastin and can repair itself
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Cornea is convex, transparent layer which is highly vascularised
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Cornea consists of dense matrix of collagen and is the most sensitive portion the eye
Explanation
Cornea consists of dense matrix of collagen, it is the transparent continuation of the sclera, that covers the iris and lens. It protects the eye ball from damage and prevents entry of micro-organisms into the eye
So, the correct answer is '
Cornea consists of dense matrix of collagen and is the most sensitive portion the eye'
In the following diagram label $$1$$ and $$2$$ shows which part of nerve cell?
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$$1$$-Axon and $$2$$-Soma (Cell body)
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$$1$$-Axon and $$2$$-Dendrite
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$$1$$-Soma (cell body) and $$2$$-Axon
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$$1$$-Soma (cell body) and $$2$$-Dendrite
Explanation
1. Soma (Cell body) - Soma is the cell body of the neuron. Nucleus is present inside the soma of the neuron which controls the cell.
2. Axon - or nerve fiber is a long thread-like structure present out of the soma which helps in transmitting the nerve impulse from the cell body to the other cell through the axon terminal.
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