PHARYNX - digestive system Flashcards
a common passageway for food fluid and air
Pharynx or Throat
the pharynx is subdivided anatomically into three parts
- nasopharynx
- oropharynx
- laryngopharynx
behind the nasal cavity
Nasopharynx
behind the oral cavity extending from the soft palate to the epiglottis
Oropharynx
extending from the epiglottis to the base of the larynx
Laryngopharynx
consist of largely of two layers of skeletal muscles: an inner layer and outer layer
Wall of the Pharynx
The Pharynx is also called
Throat
Esophagus is also called
Gullet
extends from the pharynx through the diaphragm to the gastro-esophageal sphincter in the superior aspect of the stomach
Esophagus or Gullet
it is essentially a food passageway that conduct food to the stomach in wavelike peristaltic motion
Esophagus or Gullet
has no digestive or absorptive function
Esophagus
a slightly thickening of the smooth muscle layer at the esophago-gastric junction
Gastroesophageal Sphincter
is a pear - shaped organ situated between the end of the esophagus and the begining of the small intestine
Stomach
when the stomach is empty it is collapsed except for the upper part which usually contains air called
Magenblase
is a stomach bubble which is represented by a dark area above the upper part of the stomach
Magenblase
is the area surrounding the cardiac orifice through which food enters the stomach
Cardiac part or Cardia
is a dome-shaped portion of the stomach found superiorly laterally tor he cardia
Fundus
forms the mid portion of the stomach
Body (stomach)
leads to the funnel-shaped
Pyloric Part
the wide superior area of the pyloric part is called ___ , it narrows to form ___ which terminates in the ___ the pylorus is continuous with the small intestine through
Pyloric Antrum
Pyloric Canal
pylorus
Pyloric sphincter or valve
is a thickened ring of involuntary muscle encircling an opening in a hallow organ to keep the opening closed
Sphincter
is on the medial border close to the upper end of the stomach where esophagus and stomach meet
Cardiac Orifice
the cardiac opening has sphincter called
Cardiac sphincter
is at the lower end of the stomach where the small bowel or small intestine continuous from opening
Pyloric Orifice
pyloric orifice has a sphincter called
Pyloric Sphincter
controls food movement into the small intestines from the stomach and prevents the S.I. being overwhelmed
Pyloric Sphincter
the concave medial surface of the stomach, which is shorter, concave right border
Lesser Curvature