Spinal cord terminates at the level of:
Correct answer: D. L1 or L2 vertebra
- A. Sacrum
- B. Coccyx
- C. Dorsal root
- D. L1 or L2 vertebra
Explanation
Option D is correct.The spinal cord terminates at the level of the L1 or L2 vertebra in adults. This is because the spinal cord does not grow as fast as the vertebral column during development. As a result, the spinal cord ends up being shorter than the vertebral column. The end of the spinal cord is called the conus medullaris. The conus medullaris is a cone-shaped structure that is made up of gray matter. The gray matter of the conus medullaris contains nerve cells that control the lower extremities.
Last updated
About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
Practise Coordination and Control
1,687 free Coordination and Control MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A 30 years old male complains of being over weight, sluggish in nature, hair loss, dry skin and intolerance of cold, he is suffering from:
A band of axons between two hemispheres is termed as:
A branch form the body of a neuron, which usually carries information away from its cell body, is:
A branch from the body of a neuron, which usually receives information:
A bundle of axons or dendrites bounded by connective tissue inside the CNS is: