What is a cell membrain

he cell membrane is the semipermeable membrane of a cell that surrounds and encloses its contents of cytoplasm and nucleoplasm. The cell membrane separates the cell from the surrounding interstitial fluid, the main component of the extracellular fluid.

Explanation:

The cell membrane is the semipermeable membrane of a cell that surrounds and encloses its contents of cytoplasm and nucleoplasm. The cell membrane separates the cell from the surrounding interstitial fluid, the main component of the extracellular fluid.

Explanation:

In the given case, Lydia’s peripheral nervous system will slow down the process of digestion by mediating the flow of blood away from the digestive tract in order to conserve energy.  

The PNS or peripheral nervous system is the part of a nervous system comprising all the nerves situated exterior to the CNS. The PNS possess a component called autonomic peripheral system.  

This further has three divisions with parasympathetic nervous system being one of its constituents. The parasympathetic system restores and maintains the energy, it mediates the blood towards the digestive tract and ensures that the food is digested actively.