SQL Server distinguishes between 3 different types of latches: 1  IO Latches. 2  Buffer Latches (BUF) 3  Non-Buffer Latches (Non-BUF) Letâs have a more detailed look at these 3 different variations. I/O Latches are used by SQL Server when outstanding I/O operations against pages in the Buffer Pool are done â when you read and write from/to your storage subsystem.
The pharyngeal muscles are a group of muscles that act upon the pharynx. Pharyngeal muscles contracts pushing the food into the oesophagus.There are two muscular layers of the pharynx: the outer circular layer and the inner longitudinal layer.The outer circular layer includes: 1  Inferior constrictor muscle.2  Middle constrictor muscle.haryngeal muscles contracts pushing the food into the oesophagus. There are two muscular layers of the pharynx: the outer circular layer and the inner longitudinal layer. The outer circular layer includes: 1  Inferior constrictor muscle. 2  Middle constrictor muscle.
The esophagus of an earthworm is part of the earthworm's digestive  tract, between the pharynx and the crop, and it basically just  moves the earthworm's food from the phary â¦ nx to the crop. It also  helps to keep the food from backing up (making the worm barf/throw  up).he function of a frog's esophagus is to transfer food down to the frogs stomach. the frogs esophagus is where food goes through before entering the stomach. the frogs esophagus moves food to the stomach by way of cilia.