Results for: Sympathetic-nervous-system

In Biology

What is the function of sympathetic system and para sympathetic nervous system?

The sympathetic nervous system is your 'fight or flight' mechanism.  When stressed, your body needs to work harder in order to prepare  to run away or to fight. It speeds up (MORE)

The effects of the sympathetic nervous system are essentially opposite of which nervous system?

The effects of the sympathetic nervous system are essential opposite those of the parasympathetic nervous system. The sympathetic nervous system accelerates functions such as (MORE)
In Biology

Does the sympathetic nervous system cause vasoconstriction?

Yep! The sympathetic nervous system causes both vasoconstriction & vasodilation. During "fight or flight" you need more O2/blood delivered to your skeletal muscles. The SNS ca (MORE)
In Biology

How do sympathetic and parasympathetic nervous systems work together to regulate heart rate?

  Sympathetic neurons cause pacemaker cells to generate action potentials more frequently, and thus increase heart rate. In contrast, parasympathetic neurons have the oppo (MORE)
In Biology

What hormone is released from stimulation of the sympathetic nervous system?

The sympathetic nervous system, as part of the peripheral nervous system, is composed of 2 types of nerves: pre-ganglionic & post-ganglionic.  The preganglionic neurons relea (MORE)