(21) Gastrointestinal System: Salivary Glands, Esophagus, and Peritoneal Cavity

Lecture 21

Mesentery

omentum

What is the peritoneum that supports the stomach?

Omentum

What is the term for closer to the mouth in general visceral topography?

Proximal

What is the term for away from the mouth in general visceral topography?

Distal

What type of animal’s abdomen is being shown? What is the majority of space taken up by?

Ruminant, rumen

What is the name for glands found within the mouth or outside the mouth to produce mucous or serous?

Salivary Glands

Which size of glands are found on the outside of the mouth and what fluid are they producing?

Larger glands- serous fluid

What type of enzymes do the large salivary glands produce?

digestive enzymes

Which glands are apart of the larger salivary glands?

parotid, zygomatic, mandibular, sublingual

Which gland is shown by #1?

Parotid Gland

Which gland produces mostly serous saliva, is larger in herbivores, and is a very productive gland?

Parotid Gland

Which gland is represented by #8?

Zygomatic Gland

What is the name for the zygomatic gland in the herbivores?

Dorsal Buccal Gland

What type of secretions does the zygomatic gland have?

A mix of serous and mucous

Which gland is represented by #3?

Mandibular Gland

Is the mandibular gland larger or smaller in herbivores?

Larger

Which gland is larger, the parotid gland or the mandibular gland?

Parotid Gland

What type of saliva is produced by the Mandibular Gland?

Both mucous and serous saliva

What is represented by 6/7?

Sublingual Gland

What type of saliva is produced by the Sublingual Gland?

Both mucous and serous saliva

Soft Palate

What does the soft palate separate?

Nasopharynx from oropharynx

Pharynx

What location is where the GI tract and respiratory tract begin to cross over?

Pharynx

Pharynx

#1?

Esophagus

Where does the esophagus enter the stomach?

Cardia

The Esophagus runs within the __________ of the thorax and goes through the ________ into the abdomen.

mediastinum, diaphragm

What is the term for where the esophagus goes through the diaphragm?

Esophageal Hiatus

What is shown?

Esophagus

Dark blue arrow (7)?

Outer connective tissue (serosal)

Purple arrow (6/6’)?

Middle Muscular Layer (2)

Light blue arrow (1/2/3)?

Inner Mucosal layer

What is represented by the 1 within the Inner mucosal layer? 3? 4/5?

1: Inner mucosa

3: Middle muscular

4/5: Outer submucosa

What does the esophagus often do when it does not have ingesta in it?

Collapsed

#1?

Inner Mucosal Layer

#2?

Middle Muscular Layer

#3?

Outer connective tissue (serosal)

What does patent mean?

Always open

What is the term for swallowing?

Deglutition

Deglutition is _____ while food is in the mouth, then it becomes ________.

Voluntary, Involuntary

What is the term for rhythmic contractions of the esophageal muscles?

Peristalsis

The Abdominal cavity is cranially covered by _____ ___, and caudally surrounded by the _________ muscles.

caudal ribs, abdominal muscles

Which cavity in the abdominal cavity is surrounded by a delicate serous membrane?

Peritoneal cavity

What is the delicate serous membrane called in the peritoneal cavity?

Peritoneum

What is the term for organs within the peritoneal folds?

Intraperitoneal

What is the term for the organs adhered directly to the body wall?

Retroperitoneal

What is represented by the dotted and solid line in this image?

Peritoneal Cavity

What is represented by the dotted line in the image of the peritoneal cavity?

Parietal Peritoneum

What is represented by the solid line in the image of the peritoneal cavity?

Visceral Peritoneum

What is often stored under the peritoneum?

fat

What is the fluid between the peritoneum and organs for?

lubrication

What is the name for the peritoneum folded on itself?

Mesentery

Mesentery

What does the mesentery house?

fat, viscera, supplies blood to viscera

Omentum

What type of omentum is in small animals?

lacy

What type of omentum is in large animals?

solid