Which of the following accurately describes white matter?
Correct answer: D. White matter consists of myelinated axons in the central nervous system
- A. White matter is denser than gray matter
- B. White matter is located in the central part of the spinal cord and is surrounded by gray matter
- C. White matter is only found in the peripheral nervous system
- D. White matter consists of myelinated axons in the central nervous system
Explanation
White matter refers to the white-colored myelin that surrounds the axons of neurons in the central nervous system. These axons are grouped together, creating distinct regions of white matter. In contrast, grey matter refers to the cell bodies of neurons in the central nervous system. The cell bodies are packed together into dense regions to create grey matter.
Last updated
About Chemical Coordination and Hormones
Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
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 chemical signal that has both endocrine and neural roles is:
A hormone released from the posterior pituitary lobe acts to actively transport water from filtrate collecting tubules back to the kidney. It is shown as:
A lesion to which brain region would result in a lack of coordinated movement?
A man has to face an interview, but during his first five minutes before the interview, he experiences sweating, increased heart rate, and respiration. Which hormone is responsible for his restlessness?
A patient who is unable to modulate his own ventilation and heart rate may be suffering damage to which part of his brain?