During the processs of mastication, the muscles which move the jaws to casuse the grinding and crushing actions of the teeth include all ofthe following except
C. Buccinator
Which of the following is not a lobe of the liver
C. Faciform
The arrival of Chyme containing a mixture of fats, carbohydrate, and protiens into the duodenum over a period of time would cause
an increase in the secretin from the duodennum
Substances which are placed in the mouth, travel through the gastric tract, and excreted out the anus are substances that are considereed tobe external to the body...True or False
True
Sympathetic stimulations of the gastronintestinal tract will speed up peristalisis and increas gastric scretions...ture or False
True
The prinicpal pigment in bile is a breakdown products of red blood cells...True or False
True
Which of the following is not considered an accessory organ of the digestive system?
B. stomach
Which of the following is the mesentery that extends as a thin sheet of connective tissue from the stomach to the liver?
B. lesser omentum
The opening form the oral cavity to the throat (phaynx) is known as the fauces.
True
Which of the following statements concerning the tongue is false?
C. The tongue is composed of 80% smooth muscle and 20% elastic fibers
How many baby teeth are formed
20
Dentin, cementum, and enamel are living connective tissues with cells embedded in a calcified matrix, and thus, they can repair themselves
False
Which of the following componets of saliva begins starch digestion in the mouth?
B. amylase
When the salivatory nuclei in the brainstem receive neural input from the touch and taste receptors in the mouth, salvation is increased
True
Is the statement true or False regarding the GI Tract
The esphagus is lined with stratified squamous epilthelium
True
Is the statement true or False regarding the GI Tract
The muscle layer of the upper esphagus contain skeltal muscle
True
Is the statement true or False regarding the GI Tract
The lower esphageal spincter is a very thick band of smooth muscle
False
Is the statement true or False regarding the GI Tract
The esophogeal glands secrete lubricating mucus
True
In the esophagus, a reflex response called peristalis ocvcurs when a bolus of food stimulates the stretch receptors. Which of the following is not part of this response
A. - the circular muscle behind the bolus contracts
B. The longitudinalmuscle behind the bolus contracts
C. The circular mucle in front of the bolus reflexes
D. The longitudinal muscle in front of the bolus contracts
B. The longitudinalmuscle behind the bolus contracts
Pariteal cells use the enzyme carbonic anhydrase to form the H+ ions in the hydrocholic acid that they secrete
True
Which of the following substances secreed by the cells of the stomach walll is essential for the absorbtion of vitamin B12 by the small instestine?
A. intrinsic factor
The liver secrete 1000 ML of bile per day into the duodenum
False
Which of the following is not retroperitoneal?
B. Ileum
Which of the following is not an enzyme that digest proteins in the small intestine.
C. Maltase
Which of the following does not occur within the large intestine
A, Sysnthesis of Vitamin K
B. Secretion of mucus
C. Absorbtion of water and electrolytes
D. Digestion of Cellulose by digestive enzymes
D. Digestion of Cellulose by digestive enzymes
The tooth type puncutes and shreds food
A. Canines
This type of salavary gland produces amylase, a substantial volume of saliva, an overlies the masseter muscle
A. Parotid
B. Submandibular
C. Intrinsic
D. Sublingual
E. Esophageal
A Parotid
This gastric secretion breaks protiens down into smaller polypeptide chains.
B. Pepsin
This hormone, produced in the gastric phase, stimulates pepsinogen and HCL production
B. Gastin
The function of Bile is
emulsifies fats
All of the following are functions of Cholecytokinin (CCK) except:
A. stimulates gall bladder contractions
B. Promotes scretion fo pancreatic enzymes
C.increase gastice HCL production
D. induces the movement of bile into the common bile duct.
causes the hepatopancreatic sphincter to relax
increase gastice HCL production
This brush border enzyme activates other enyzmes
D. Enterokinase
These intestinal structures containlymphocyte follicles to attack pathogens
D. Peyer Patches
If an older person is having diarrhea and gas when they drink much milk, what enzyme are they not producing
C. Lactase
This brush border enyzme will complete polypeptide digestion
