Question

Select the correct statements regarding sympathetic nervous system.

i. It consists of 31 pairs of sympathetic ganglia.

ii. It is also called cranio- sacral outflow.

iii. It controls body activities like fight and flight

iv. Pre-ganglionic fibres are long and post response. ganglionic fibres are short.

v. Adrenaline is produced towards terminal end of post-ganglionic fibres.

• A. i and ii
• B. iii and \(v\)
• C. v and iv
• D. ii and iv

Hint:

Separate the features of the sympathetic system from those of the parasympathetic system.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
The sympathetic system prepares the body for fight or flight.

Step 2: Check each
Statement i is wrong: there are 22 pairs of sympathetic ganglia.
Statement ii is wrong: craniosacral outflow is parasympathetic.
Statement iii is correct.
Statement iv is wrong: preganglionic fibres are short and postganglionic fibres are long.
Statement v is accepted as correct (adrenaline or noradrenaline is released from the post-ganglionic nerve endings).

Step 3: Result
Correct statements are iii and v.

Final Answer:
Statements iii and v are correct. \[ \boxed{\text{(B) }\text{iii and v}} \]