Question

please say the answer....of 13 th one please help....​

Answer 1

Answer:

all answer questions are answered by the author

Answer 2

1.Cerebrospinal fluid (CSF) is a clear, colorless body fluid found within the tissue that surrounds the brain and spinal cord of all vertebrates.

2.Sensory pathways consist of the chain of neurons, from receptor organ to cerebral cortex, that are responsible for the perception of sensations.