A pancreatectomy can be performed as a treatment for pancreatic cancer, pancreatic tumors (pre-malignant), chronic pancreatitis, or when the pancreas has been severely damaged by injury. Removing part of or the entire pancreas may cause a loss of pancreatic digestive enzyme production, leading to EPI.
Question: When a nerve fiber is polarized, the concentration... When a nerve fiber is polarized, the concentrationof: A. sodium and potassiumions is higher on the inside of its membrane. B. sodium ions is higher on the inside of its membrane and potassium ions are higher on the outside.
Muscle Fiber Excitation. The events already described (calcium entry, cross-bridge cycling) occur when a muscle fiber is excited to fire an action potential. An action potential is triggered in a muscle fiber when it is depolarized due to excitation at its synapse, the neuromuscular junction.Each muscle fiber has one neuromuscular junction, receiving input from just one somatic efferent neuron.Ch binds to nicotinic receptors in a specialized region of the muscle fiber known as the motor endplate. ACh binding allows Na + ions to enter the cell, causing a depolarizing excitatory postsynaptic potential (EPSP) that is above threshold and triggers an action potential.