Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
96 Cards in this Set
- Front
- Back
The digestive system
|
Mechanically and chemically breaks down food for nutrient absorption
|
|
The alimentary canal extends in its entirety from
|
The mouth to the Anus
|
|
The correct sequence for the layers within the wall of the alimentary canal from inside to outside is
|
Mucosa, submucosa, muscular layer, serosa
|
|
Peristalsis occurs in the digestive tract
|
From the pharynx to the anus
|
|
Peristalsis mixes food with digestive enzymes in small segments of the alimentary canal
|
False
|
|
________ aids mixing movements in the Alimentary canal by alternately contracting and relaxing nonadjacent segments
|
Segmentation
|
|
The uvula is
|
A projection of the soft palate
|
|
Because of their location swollen palatine tonsils may interfere with
|
Both breathing and swallowing
|
|
The teeth that are best adapted for biting off relatively large pieces of food are the
|
Incisors
|
|
Microorganisms promote the development of dental cavities by metabolizing carbohydrates and releasing by products that are
|
Acidic
|
|
Salivary amylase digests
|
Carbohydrates
|
|
In the swallowing reflex
|
The soft palate, larynx, and hyoid bone are raised
The epiglottis closes off the top of the trachea The tongue presses against the uvula and soft palate Muscles pull the pharynx toward the food |
|
A hiatal hernia is due to a weakness of the
|
Diaphragm
|
|
The main part of the stomach is called the
|
Body
|
|
The parietal cells of gastric glands secrete
|
Hydrochloric acid
|
|
Gastric, which stomach cells secrete
|
Increases the secretion by the gastric glands
|
|
The _______ is a valve that controls the movement between the stomach and small intestine and
|
Pyloric sphincter
|
|
Intrinsic factor is necessary for the normal absorption of _______ from the small intestine
|
Vitamin B12
|
|
The vomiting center is located in the ________ of the brain
|
Medulla oblongata
|
|
What is a protein splitting enzyme found in pancreatic juice
|
Trypsin
|
|
All of the enzymes that digest protein are
|
Secreted in an inactive form
|
|
Acute pancreatitis is often caused by the conversion of
|
Trypsin often to trypsin
|
|
The hormone secretin
|
Stimulates the release of pancreatic fluid
|
|
Cholecystokinin secretion from the intestinal wall is stimulated by the presence of
|
Proteins and fats in the small intestine
|
|
The liver
|
Forms glucose from no carbohydrates
Stores vitamin d Destroys damaged red blood cells Forms urea |
|
Which constituent of bile has a digestive function
|
Bile salts
|
|
Jaundice, which is characterized by a yellowish tinge to the tissues, is due to an increased blood concentration of
|
Bile pigments
|
|
Gallstones are usually composed of
|
Cholesterol
|
|
Severe liver damage would most likely affect digestion of
|
Lipids
|
|
Cholecystokinin a hormone released from intestinal mucosa by the presence of fats, stimulates the gallbladder to contract and release bile into the duodenum
True or False |
True
|
|
Bile is composed of HCI, pepsin, mucus, and intrinsic factor
|
False
|
|
The gallbladder is connected to the common bile duct by the hepatic duct
|
False
|
|
Bile salts function as digestive enzymes to break down fatty acids
|
False
|
|
Large fixed phagocytes in the lining of the hepatic sinusoids are called
|
Kupffer cells
|
|
Bile breaks down fat globules by
|
Emulsification
|
|
The greater omentum is composed of
|
The peritoneal membrane
|
|
The epithelial cells that form the inner lining of the small intestine
|
Are replaced every few days
|
|
Lactose intolerance is caused by
|
Deficiency of lactase
|
|
Food passing from the stomach through the small intestine first passes into the duodenum then the jejunum and lastly the ileum
True or False |
True
|
|
The movement of chyme through the small intestine is increased by parasympathetic impulses and is inhibited by sympathetic impulses
True of False |
True
|
|
Lump transports fat molecules with longer chains of carbon atoms away from the intestine.
True or false |
True
|
|
The double layered fold of peritoneum that suspends portions of the small intestine is called
|
Mesentery
|
|
Fat molecules with longer chains of carbon atoms are transported from the small intestine by means of
|
Lymph
|
|
The sphincter muscle located between the small intestine and the large intestine is the
|
Ileocecal valve
|
|
One of the major functions of the large intestine is to
|
Reabsorbs water from chyme
|
|
During the defecation reflex
|
The diaphragm lowers
|
|
The cecum is located at the inferior end of the descending colon
True or false |
False
|
|
The American heart association recommends that the percentage of calories on a persons diet derived from fats should not exceed
|
30%
|
|
Plant proteins typically contain less than adequate amounts of
|
Essential amino acids
|
|
The results of poor nutrition from lack of nutrients or failure to use them is
|
Malnutrition
|
|
Vitamin E, a fat soluble vitamin, is destroyed by cooking.
True or false |
False
|
|
Vitamin E, a fat soluble vitamin, is destroyed by cooking.
True or false |
False
|
|
Microorganisms removed from incoming air by sticky airway mucus are most likely to be destroyed by
|
The digestive action of gastric juice
|
|
The organs of the upper respiratory tract are located outside the thorax
True or false |
True
|
|
The glottis is the opening between the vocal cords
True or false |
True
|
|
The right lung is larger than the left lung
True or false |
True
|
|
The left lung has only two lobes
True or false |
Tryw
|
|
The potential space between the pleural membrane is called the pleural cavity
|
True
|
|
________ is a substance secreted by cells in the lungs that reduces surface tension
|
Surfactant
|
|
The muscular action that causes air to move into the lungs during inspiration is provided by
|
The diaphragm
|
|
The force responsible for normal resting expiration is supplied by
|
Elastic recoil of the lungs
|
|
The amount of air that enters or leaves the lungs during a respiratory cycle is the
|
Tidal volume
|
|
What would be the most helpful for forceful expiration
|
Abdominal wall muscles
|
|
The vocal cords are located within the
|
Larynx
|
|
The additional volume of air that can be expelled from the lungs at the end of a resting expiration is called
|
Expiration reserve volume
|
|
The additional volume of air that can be inhaled at the end of a resting inspiration is called
|
Inspiration reserve volume
|
|
The volume of air that can be expelled from completely filled lungs is called
|
Vital capacity
|
|
The visceral and parietal pleural membranes are normally held together by
|
Decreased pressure in the pleural cavity
|
|
The condition in which outside air enters the pleural cavity is called
|
Pneumothorax
|
|
Emphysema is characterized by an decrease in
|
Alveoli function
|
|
What is the value that cannot be measure or calculated using simple spirometer
|
Total lung capacity
|
|
The pectoralis mini and the sternocleido astound muscles are useful in aiding forced expiration
True or false |
False
|
|
The maximum amount of air a person can exhale after taking the deepest breath possible is a measurement of that persons vital capacity
True or false |
True
|
|
The layer or serous membrane that is firmly attached to the surface of a lung is called
|
Visceral pleura
|
|
The walls of the alveoli are composed of
|
Simple squamous epithelium
|
|
Decrease pressure in the plural cavity tends to hold the visceral and parietal pleural membranes together true or false
|
True
|
|
The respiratory membrane consists of
|
To thicknesses of epithelial cells and their basement membranes
|
|
Breathing rate is most likely to increase blood level of
|
Carbon dioxide increases
|
|
The receptors of the inflation reflex are most sensitive to
|
Stretch
|
|
Hyperventilation causes
|
A decrease in plasma pCO2
|
|
The respiratory centers are located in the medulla oblongata and the pond of the
|
Brainstem
|
|
A voluntary increases in the rate and depth of breathing is called
|
Hyperventilation
|
|
A breathing pattern that eliminates too much CO2 is called hyperventilation
True or False |
True
|
|
Gas exchange between the air in the alveoli and the blood in nearby capillaries occurs by the process of
|
Diffusion
|
|
Ordinary air is about ____% oxygen
|
21%
|
|
The walls of the nasal cavity are composed of
|
Ciliated columnar epilthelium
|
|
Within a mixture of gases, the pressure created by each gas is called its
|
Partial pressure
|
|
The enzyme carbonic anhydrase speeds the reaction between
|
Carbon dioxide and water
|
|
Carbon monoxide bonds to hemoglobin more strongly than does oxygen
True or false |
True
|
|
Caraminohemoglobin is formed when hemoglobin bonds
|
Amino acids
|
|
Microorganisms trapped in the mucus of the nasal cavity eventually end up in Themistocles of the inspired
|
Stomach
|
|
Most of the inspired air eventually ends up in the
|
Alveoli
|
|
Laryngitis is potentially dangerous condition because it may cause
|
Obstruction of the airway
|
|
The condition of newborns called infant respiratory distress syndrome is caused by
|
Lack of surfactant
|
|
Cancer that originated in the lungs is most likely to develop from
|
Epithelial cells
|
|
The procedure used to directly examine the trachea and bronchial tree is called
|
Bronchoscopy
|