#4; Chap. 25; pt. 1

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The digestive tract is also known as what?

Alimentary Canal

____- 30 foot long muscular tube extending from the mouth to anus

Digestive Tract

____ is the stomach & intestines.

Gastrointestinal (GI) Tract

This layer of the GI tract thickens to form valves that regulate the passage of material through the tract.

Inner Circular

Valves in the inner circular layer of the GI tract that regulate the passage of material through the tract is called what?

Sphincters

This layer of the GI tract is responsible for the motility that propels food & residue through the tract.

Outer Longitudinal

____- connective tissue sheets that loosely suspend the stomach & intestines from the abdominal wall

Mesenteries

____- a serous membrane that lines the wall of the abdominal cavity

Parietal Peritoneum

What forms the dorsal mesentery?

Parietal Peritoneum

The parietal peritoneum forms what?

Dorsal Mesentery

____- a ventral mesentery that extends from the lesser curvature of the stomach to the liver

Lesser Omentum

____- hangs from the greater curvature of the stomach

Greater Omentum

In the mouth, the ____ is the anterior opening between the lips.

Oral Fissure

In the mouth, the ____ is the posterior opening to the throat.

Fauces

____- median fold that attaches each lip to the gum between the anterior incisors

Labial Frenulum

____- the space between cheek or lips & the teeth

Vestibule

____- serous & mucous glands amid the extrinsic muscles

Lingual Glands

____ secretes a portion of the saliva.

Lingual Glands

____- contained in the root of the tongue

Lingual Tonsils

____- separates the oral cavity from the nasal cavity

Palate

____- anterior portion that is supported by the palatine processes of the maxillae & the palatine bones

Hard (Bony) Palate

____- posterior portion of the mouth with a more spongy texture

Soft Palate

_____- conical medial projection visible at the rear of the mouth

Uvula

____ are located on the wall between the arches.

Palatine Tonsils

How many adult teeth do you have?

32

How many deciduous (baby) teeth do you have?

20

____- anchors tooth firmly in alveolus

Periodontal Ligament

____- covers the alveolar bone

Gingiva (Gum)

____- small glands dispersed amid other oral tissues

Intrinsic Salivary Glands

This intrinsic salivary gland is in the tongue and produces lingual lipase.

Lingual Glands

Name the Intrinsic salivary glands.

Lingual, Labial, & Buccal Glands

_____- three pair connected to oral cavity by ducts

Extrinsic Salivary Glands

This type of extrinsic salivary gland is located beneath the skin anterior to the ear lobe.

Parotid Glands

This type of extrinsic salivary gland is located halfway along the body of the mandible.

Submandibular Glands

This type of extrinsic salivary gland is located in the floor of the mouth.

Sublingual Glands

Name the extrinsic salivary glands.

Parotid, Submandibular, Sublingual Glands

_____- a muscular funnel that connects oral cavity to esophagus & allows entrance of air from nasal cavity to larynx

Pharynx

____- a straight muscular tube that begins at the level between C6 & the cricoid cartilage

Esophagus

The esophagus starts at what level?

C6 & The Cricoid Cartilage

____ extends from pharynx to cardiac orifice of stomach passing through esophageal hiatus in diaphragm

Esophagus

____- food pauses at this point because of this contriction

Lower Esophageal Sphincter

____ in the submucosa secrete mucus.

Esophageal Glands

Esophageal glands in the submucosa secrete what?

Mucus

____- a muscular sac in upper left abdominal cavity immediately inferior to the diaphragm

Stomach

The stomach primarily functions as what?

Food Storage

____ has an internal volume of about 50 mL when empty.

Stomach

The ____ has 1.0 - 1.5 L after a typical meal.

Stomach

The stomach mechanically breaks up food particles, liquefies the food, & begins chemical digestion of ____ & fat.

Protein

____- soupy or pasty mixture of semi-digested food in the stomach

Chyme

____- J-shaped muscular organ with lesser & greater curvatures

Stomach

This region of the stomach is a small area within about 3 cm of the cardiac orifice.

Cardiac Region (Cardia)

This region of the stomach is a dome-shaped portion superior to esophageal attachment.

Fundic Region (Fundus)

This region of the stomach makes up the greatest part of the stomach.

Body (Corpus)

This region of the stomach is the narrower pouch at the inferior end.

Pyloric Region

____- narrow passage to duodenum

Pylorus

_____- regulates the passage of chyme into the duodenum

Pyloric Sphincter

The ____ is simple epithelium that covers the mucosa.

Stomach

Apical regions in the mucosa of its surface cells are filled with ____.

Mucin

____- depressions in gastric mucosa

Gastric Pits

What type of glands are in the cardiac region?

Cardiac Glands

What type of glands are in the pyloric region?

Pyloric Glands

What type of glands are in the rest of the stomach besides the cardiac & pyloric region?

Gastric Glands

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