Explain the structure and function of Schwann cells and nodes of Ranvier
What will be an ideal response?
Schwann cells are specialized connective tissue cells that produce myelin. Myelin forms extensive sheaths around axons that insulate and protect the nerve membranes from their surrounding environments. Axons and their associated Schwann cells are collectively referred to as nerve fibers. Local anesthetic solutions cannot diffuse through myelinated nerves except in areas where they come into direct contact with the membrane at the nodes of Ranvier.
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Which of the following parameters is (are) displayed on the user interface of the Maquet Servoi?
1. Expired minute volume 2. Inspiratory tidal volume 3. Intrinsic positive end-expiratory pressure 4. Shallow breathing index a. 2 only c. 1, 2, and 4 b. 1 and 3 d. 1, 2, 3, and 4
To be considered for payment, Medicaid claims for inpatient services must be received within:
A) 65 days from the discharge date. B) 95 days from the discharge date. C) 180 days from the date of service. D) 1 year from the date of service.
What does the cardiac cycle represent?
a. Contraction of the atria b. One heartbeat c. Relaxation of the entire heart d. Contraction of the ventricles
Where in the nephron does secretion occur?
A) loop of Henle B) distal convoluted tubule C) glomerulus D) proximal convoluted tubule