neurology

Question 1

which of the following is white matter?
1. CNS axons
2. CNS cell bodies

Answer 1

1. CNS axons - the myelin sheath surrounding the axons gives the tissue a white appearance

Question 2

which statement about grey matter is true?
1. it forms the outer portion of the spinal cord
2. it is found in tracts and nerves
3. it is frequently a site of signal integration

Answer 2

3. it is frequently a site of signal integration - grey matter consists predominantly of neuronal cell bodies, which integrate electrical signals

Question 3

Which of the following statements is true of afferent neurons?
1. They carry sensory signals.
2. They are found only in the CNS.
3. They carry motor command signals.
4. They convey information away from the CNS.

Answer 3

1. They carry sensory signals.

Question 4

Which of the following statements is true of efferent neurons?
1. They carry motor command signals.
2. They are found only in the CNS.
3. They carry sensory signals.
4. They convey information towards the CNS.

Answer 4

1. They carry motor command signals.