The arachnoid membrane covers the

The genu and splenium in the brain are associated with:

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?

The third ventricle is present in:

The part of the human brain located between the thalamus/hypothalamus and the pons is:

Which of the following is $NOT$ an effect of the sympathetic nervous system?