Which of the following actions does not occur in humans after sympathetic stimulation?

Which of the following functions is affected when the $abducens$ nerve is injured in humans?

Which of the following is $NOT$ under the control of the $Vagus$ nerve?

Which of the following statements are correct?
$(i)$ $Ramus$ $dorsalis$ branch of spinal nerve contains sensory as well as motor nerve fibres.
(ii) The preganglionic nerve fibres arise from the entire spinal cord.
(iii) There are $31$ pairs of spinal nerves.
(iv) The somatic nervous system transmits impulses from $CNS$ to visceral organs.
$(v)$ Reflex action is a sudden,thoughtful,and voluntary response to the applied stimulus.
Select the correct option.

Briefly describe the structure of the following:
$(a)$ Brain
$(b)$ Eye
$(c)$ Ear

Neurosis is characterised by