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EN physiololy class

week 7-13

QuestionAnswer
A hormone released by the small intestines that stimulates contraction of the gallbladder which releases bile, stimulates the pancreas to secrete enzymes to help break down fat. cholecystokinin: CCK
What are the four parts of the colon? ascending, transverse, descending, sigmoid
The pressure of a gas is inversely proportional to its volume. At a constant temp., gas always fills its container. Boyles law
What are the characteristics of the pulmonary arteries? They allow for gas exchange, and are a low pressure, high flow circulation
What is tidal volume, and how many ml is it with each breath? Amount of air inhaled and exhaled with each breath under resting conditions; 500ml
What is vital capacity? Sum of IRV + TV + ERV
What are the three parts of the lymphatic system? lymph vessels/ lymphatics lymph lymph nodes
Right lymphatic duct drains the right upper arm and the right side of the head and thorax
2 main types of lymphocytes T and B cells
Three Mechanisms Assisting in Blood Return 1.Contraction of skeletal muscles 2.One-way valves permit only one-way blood flow 3.Pressure changes associated with breathing push blood toward the heart
Myocardium Thick layer of cardiac muscle Electrical signals flow directly from cell to cell This is what contracts when the heart beats
Sino Atrial (SA) node Small mass of cardiac cells in upper right atrium Cardiac pacemaker Initiates the heartbeat spontaneously
Parasympathetic Nerves Dilate blood vessels, lowering blood pressure
Created by: Elizabethn27
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