Anatomy of Digestive System 1 Flashcards
(82 cards)
Digestive system includes? (2)
- All organs of the digestive tube
- Accessory organs (secretions)
Mouth, pharynx, esophagus, stomach, small and large intestines, rectum and anus. These are part of which digestive systems?
Organs of digestive tube
Salivary glands, liver, gall bladder, pancreas. These are part of which digestive system?
Accessory organs
What is the differences between Endo- and Exo-crine?
Endo- travels in blood.
Exo- travels in ducts
Which accessory organ is both Exo- and Endo-crine?
Pancreas
What are the 3 pairs of salivary glands?
- Parotid
- Submandibular
- Sublingual
Which pair of salivary glands of the 3 is this?
-below zygomatic arch and anterior to ear, just
beneath the skin with single ducts that open lateral to the 2nd upper molar.
Parotid glands (Stenson’s duct)
Which pair of salivary glands of the 3 is this?
- in the floor of the mouth on inner surface of mandible with single ducts (Wharton’s duct) that open on the sides of the frenulum, posterior to the lower incisors.
Submandibular ducts
Which pair of salivary glands of the 3 is this?
-beneath the mucosa on the floor of the mouth with numerous ducts to open along the sides of the tongue.
Sublingual ducts
Parotid ducts are under Para/Sympathetics control and via which CN?
Parasympathetics, CN IX (Glossopharyngeal)
Submandibular ducts are under Para/Sympathetics control and via which CN?
Parasympathetics, CN VII (Hypoglossal)
Sublingual ducts are under Para/Sympathetics control and via which CN?
Parasympathetics, CN VII (Hypoglossal)
Muscular tube that has an average diameter of 2 cm which extends from the PHARYNX (C6) and terminates in the cardial orifice of the stomach (25 cm long). What structure is this?
Esophagus
What are the 3 potential restrictions to the esophagus?
- Upper esophageal sphincter
- Broncho-aortic (Thoracic) constrictions
- Lower esophageal sphincter
Which one of the 3 esophagus restriction s is this?
-cricopharyngeus muscle which demarcates the beginning of the esophagus.
Upper esophageal sphincter
Which one of the 3 esophagus restriction s is this?
-area where the esophagus is first crossed by the arch of the aorta and then by the left main bronchus.
Broncho-aortic (Thoracic) constrictions
Which one of the 3 esophagus restriction s is this?
-(T10 level) located where the esophagus passes through esophageal hiatus in the diaphragm. Prevents reflux of gastric contents.
Lower esophageal sphincter
_____ derivative: The ABDOMINAL PART of the esophagus extends from the diaphragm to the cardiac region of the stomach (cardial orifice) 1.25 cm.
Foregut
Foregut derivative internal circular and external longitudinal
layer of muscle fibers:
-Upper 1/3 = _____ muscle (voluntary)
-Middle 1/3 = mixture of muscle
-Inferior 1/3 = _____ muscle (involuntary)
skeletal; smooth
The esophagus is attached to the diaphragm by way of the _____ ligament which allows some movement during breathing.
phrenicoesophageal
The right border of the esophagus follows the contour of the stomach, however, the left border is delineated from the stomach by the _____ notch.
cardiac
There is an abrupt change in the epithelial lining between the esophagus and the stomach, which is demonstrated by a zig- zag line called the _____(esophagogastric junction) located at the ___.
z-line; ~ T11
Esophagus is lined with _____ _____epithelium above the diaphragm.
stratified squamous
Inferior to the diaphragm, the esophagus is lined with _____ epithelium similar to that of the stomach.
columnar