Association areas are regions found in

The link between paracoel and diocoel is through

Where is the posterior choroid plexus found?

The Vagus nerve is:

The brain stem consists of:

Consider the following statements regarding the human brain:
$1.$ The cerebrum has a highly convoluted surface,which provides space for more neurons.
$2.$ The medulla oblongata is connected to the spinal cord.
$3.$ The medulla oblongata contains centers for respiration,cardiovascular reflexes,and gastric secretions.
Which of the above statements are correct?