Digestive Process | alimentary canal 1 | alimentary canal 2 | smooth muscle and other stuff | Disorders |
---|---|---|---|---|
What is ingestion?
the taking of food into the mouth
|
What is mouth and the tongue?
A mucosa lined cavity whose boundaries are the lips anteriorly, the cheeks laterally, the palate superiorly, and the tongue inferiorly.
Occupies the floor of the mouth is predominately a muscle constructed of interlacing fascicles of skeletal muscle fiber |
What is pancreas two function endocrine and exocrine?
the function in ___ secretes two major hormones insluin and glucagon, which lower and raise blood sugar levels.
Its ____ function is is to produce most of enzymes that digest foodstuffs in the small intestine. |
What is mucosa?
innermost layer, contains three sub layers lining epithelium, a lamina propria,and muscularis mucosae.
|
What is intestinal obstruction?
Mechanical obstructions
Adhesion, tumors, or foreign objects Non mechanical obstruction Halt in peristalsis Trauma Intestines touched during surgery 85% occur in small intestine |
What is propulsion and Peristalsis?
the movement of food through the alimentary canal. It includes swallowing, which is initiated voluntarily, and peristalsis, an involuntarily process
"around the contraction", the major means of propulsion throughout the alimentary canal, involves alternat |
What is teeth deciduous teeth and permanent teeth?
Lie in sockets (alveoli) in the gum covered margins of the mandible and by moving it from side to side while using the tongue to position food.
humans have to sets of teeth or dentitions. Deep lying ________ enlarge and develop, the roots of deciduous tee |
What is liver and bile?
The largest gland in the body, weighing about 1.4kg (3 pounds) in an average adult.
Is to produce ___, a green alkaline liquid that is stored in the gallbladder and secreted into the duodenium. |
What is serosa?
____ the visceral peritoneum, is the outermost layer of the intraperitoneal organs of the alimentary canal.
|
What is peptic ulcers?
Are erosions of the mucosa of a region of the alimentary canal
Gastric ulcers Occur in pyloric region of the stomach Duodenal ulcers Occur in duodenum of the small intestine Caused by Helicobacter pylori H. pylori Acid-resistant Binds to gastric epitheliu |
What is mechanical breakdown and segmentation?
Physically prepares food for digestion by enzymes by breaking into smaller pieces. includes chewing, the churning of food in the stomach.
Rhythmic local constrictions of the intestine. mixes the food with the digestive juices and increases the efficiency |
What is oropharynx and laryngopharynx?
From the mouth, swallowed food passes posteriorly into ______ and then the ______ both which are passageways for food.
|
What is gallbladder?
A muscular sac, resting n a shallow depression on the visceral surface of the right lobe of the liver.
|
What is dense bodies?
Tension resisting intermediate filaments extend through the cell in a lattice-like arrangement. Along these intermediate filaments lies ____ at regular intervals that anchor the thin filaments
|
What is inflammatory Bowel Disease?
Inflammation of intestinal wall
Crohn’s disease body's immune system attacks the gastrointestinal tract Ulcerative colitis up to 2 of every 1000 people are affected |
What is Digestion?
a series of steps in which complex food molecules are broken down to their chemical building blocks. Glands in the gastrointestinal tract in the accessory organs produce enzymes and other substance and secrete them into the lumen of the alimentary canal.
|
What is esophagus, cardial orifice, and cardiac sphincter?
A muscular tube that propels sawllowed food to the stomach. Lumen is collapsed when it is empty.
Its abdominal part, which is only about 2cm long joins the stomach at the_____ where a _______ acts to close off the lumen and prevent regurgitation of aci |
What is large intestine?
Material that reaches it is largely digested residue that contains few nutrients.During the 12-24 hours that this residue remains in the _____ little additional breakdown of food occurs.
|
What is muscularis externa?
External to the sub-mucosa is the _____ also simply called the muscular layer. this tunic consists of two layers of smooth muscle an inner circular layer whose fibers orient around circumference of canal, and an outer layer of longitudinal layer whose fib
|
What is ulcerative colitis?
is a type of inflammatory bowel disease (IBD) that affects the lining of the large intestine (colon) and rectum
|
What is absorption and defecation?
the transport of digested end products from the lumen of the alimentary canal into the blood ad lymphatic capillaries located in the wall of the canal.
The elimination of indigestible substances from the body. |
What is stomach, chyme, and pepsin?
J- shaped _____ widest part of the alimentary canal, a temporary storage tank in which food is churned and turned into a paste called______.
Starts the breakdown of food proteins by secreting ______,a protein-digesting enzyme that can be function only |
What is small intestine?
The longest part of the alimentary canal and the site of most enzymatic digestion and virtually all absorption of nutrients.
|
What is visceral peritoneum, parietal peritoneum, and peritoneal cavity?
_________ covers the external surfaces of most digestive organs.
_____ lines the body wall is continuous with the..... ____a slit like potential space between visceral and parietal. lies between the digestive organs and the abdominal body wall. contains |
What is viral Hepatitis?
Jaundice and flu-like symptoms
Major types—A, B, C, and G |