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Ericka Hernandez

SCI 221

QuestionAnswer
What is the difference between a somatic reflex and an autonomic reflex? A somatic reflex is caused by contraction of skeletal muscles, whereas an autonomic reflex consists of contraction of smooth or cardiac muscle or secretions of glands
Which of the following statements is not true of the pineal gland? Melatonin is stimulated by the presence of sunlight
SA node, AV node, AV bundle, and Purkinje fibers The four structures that compose the conduction system of the heart
Cardiac output is determined by Stroke volume and heart rate
Vessels do not have the ability to constrict and dilate Capillaries
During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? It flows into the inferior vena cava
Lymphotoxin A powerful poison that acts directly on any cell and quickly kills it
The hormone thought to be a messenger causing release of digestive enzymes from the intestinal mucosa is Vasoactive intestinal peptide
Secretin The hormone that stimulates the release of bicarbonate substance from the pancreas
Which blood vessel carries absorbed food from the GI tract to the liver? Portal vein
Created by: Ericka Kane
 

 



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