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- Anatomy Exam 4
Anatomy Exam 4
Nursing 100 with Riley-lawless at University of Delaware
About this deck
By: Suzanne Reynolds
Created: 2011-05-05
Size: 45 flashcards
Views: 12
Created: 2011-05-05
Size: 45 flashcards
Views: 12
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Alimentary canal
Mouth, pharynx, and esophagus
Stomach, small intestine, and large intestine
Ingestion
occurs in the mouth
Propulsion
movement of food
Peristalsis
major means of propulsion
Mechanical digestion
prepares food for chemical digestion
chewing, churning food in stomach, segmentation
Segmentation
rhythmic local constrictions of intestine
Chemical Digestion
complex molecules broken down to chemical components
mouth
stomach
small intestine
Absorption
transport of digested nutrients
Defecation
elimination of indigestible substances as feces
Peritoneum
a serous membrane
Visceral peritoneum
surrounds digestive organs
Parietal peritoneum
lines the body wall
Peritoneal cavity
a slit-like potential space
Mesentery
a double later of peritoneum
holds organs in place
sites of fat storage
provides a route for circulatory vessels and nerves
Retroperitoneal Organs
Behind the peritoneum
Peritoneal Organs
Digestive organs that keep their mesentery
Lesser omentum
attaches to lesser curvature of stomach
Greater omentum
a "fatty apron" of peritoneum
greater omentum and transverse colon reflected
Mucosa
innermost layer of alimentary canal wall
consists of:
- epithelium
- lamina propria
- muscularis mucosae
Submucosa
external to mucosa
contains blood and lymphatic vessels, nerve fibers
Muscularis externa
external to the submucosa
TWO LAYERS
- circular muscularis - inner layer
- longitudical muscularis - outer layer
Serosa
the outermost layer of Alimentary Canal Wall
the visceral peritoneum
Smooth Muscle
Primarily found in walls of viscera
Fibers elongated
Have one centrally located nucleus
Grouped into sheets
Longitudinal later of Smooth Muscle
parallel to long axis of organ
Circular layer of Smooth Muscle
deeper layer, fibers run around circumference of organ
Dense bodies (smooth muscle)
correspond to Z-discs of skeletal muscle
Smooth muscle innervated by....
ANS
Exception
- iris of eye
- arrector pili muscles in skin
Myenteric nerve plexus
Lies between circular and longitudinal muscularis
controls peristalsis and segmentation
Submucolsal nerve plexus
lies in submucosa
signals glands to secrete
Mucosal layer
stratified squamous epithelium
lamina propria
Lips and Cheeks formed from what muscles
Orbicularis oris and buccinator muscles
Labial frenulum
connects lips to gum
palate
forms the roof of the mouth
Intrinsic muscles (tongue)
within the tongue
Extrinsic muscles (tongue)
external to the tongue
Lingual frenulum (tongue)
secures tongue to floor of mouth
Tongue papillae
filiform papillae - no taste buds
fungiform papillae
circumvallate papillae
Sulcus terminalis
marks border between mouth and pharynx
Deciduous teeth
20 teeth
First appear at 6 months of age
Permanent teeth
32 teeth
most erupt by the end of adolescence
Tubuloalveolar glands
Parotid glands
Submandibular glands
Sublingual gland
Parotid glands
parotid duct- parallel to zygomatic arch
contains only serous cells
Submandibular glands
lies along medial surface of mandible
Sublingual glands
Lies in gloor of oral cavity
Contains primarily mucous cells
About this deck
By: Suzanne Reynolds
Created: 2011-05-05
Size: 45 flashcards
Views: 12
Created: 2011-05-05
Size: 45 flashcards
Views: 12
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy
Kathy