Lec test 3
What is/are the functions of the lymphatic system?
Collect and transport excess body fluid to the blood stream
Defend the body against pathogens
Both of the above are correct
Supply enzymes to the digestive system
Which of the following is not an accessary organ of the digestive system?
Liver
Spleen
Gall bladder
Pancreas
Which of the following best describes the lymphatic pathway?
Lymphatic cappilaries-lymphatic vessels-lymph node-collecting duct-aorta
Lymphatic capillaries-lymph node-lymphatic vessels-subclavian vein-collecting duct
Lyphatic capillaries-collecting duct-lymphatic truck-lymphatic vessels-subclavian vein
Lymphatic capillaries-lymphatic vessels-lymph node-collecting duct-subclavian vein
The total length of duodenum, jejunum, and ileum is about?
5.5-6.0 feet
5.5-6.0 inches
5.5-6.0 meters
5.5-6.0 centimeters
The food in the alimentary canal moves by the mechanism called
Dehydration synthesis
Peristalsis
Cytolysis
Phagocytosis
How does the lymph move in the lymphatic vessels?
By skeletal muscle contraction in the limbs
Due to pressure changes during breathing
Smooth muscles contraction in the lymphatic truck walls
All of the above
Obstruction in lymph flow in the body will cause _______ in the body?
Dehydration
Edema
Hypertension
No change
Aggregates of lymph nodules in the mucosal lining of the small intestine are called?
Tonsils
Peyer's patches
Parotid patches
None of the above
Which of the following body regions have lymph nodes?
Supratrochlear
Inguinal
Both of the above
Only popliteal
Functions of the lymph nodes:
To filter potentially harmful particles from the lymph
Immune surveillance by lymphocytes and macrophages
Both of the above
Productions of red blood cells
Production of antibodies
Location of the thymus is in the?
Mediastinum
Inferior to the spleen
Inferior to the liver
None of the above
Interferons and complements are _________
Digestive enzymes
Phagocytic cells
Chemical barriers for body defense
All of the above
Perforins are the substances produced by the?
Parietal cells of the stomach
Chief cells of the stomach
Intestinal glands
Natural killer cells
Unspecialized precursors of lymphocytes are produced in the
Spleen
Red bone marrow
Peyer's patches
Tonsils
T-cells provide
Cellular immune response
Antibodies/humoral immune response
Both of the above
Mechanical barrier
Immunoglobulins are composed of
Four amino acid chains
Two amino acid chains
Five amino acid chains
Six amino acid chains
Exposure to a vaccine containing weekened pathogen is
Naturally acquired active immunity
Artificially acquired active immunity
Artificially acquired passive immunity
Naturally acquired passive immunity
Loose connective tissue, glands, blood, and lymphatic vessels are located in the _____ layer of the wall of the alimentary canal
Submucosa
Mucosa
Serosa
Muscular
Myenteric plexus of the alimentary canal controls
Secretions in the gastrointestinal tract
Movements/motility in the gastrointestinal tract
Water absorption during digestion
Fat absorption
The tissue that is located in the mucosa of the small intestine is
Simple squamous epithelium
Simple columnar epithelium
Stratified squamous epithelium
Elastic connective tissue
Which of the following is NOT true about large intestine?
It has very little or no digestive functions
It contains sigmoid colon
Bacteria make intestinal flora in it
It contains pyloric sphincter
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