BIOL 031 Lecture Notes - Lecture 26: Muscle Relaxant, Troponin, Motor Neuron
19 Aug 2020
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Actin is more plentiful in smooth muscle than in striated muscle; lacks troponin. Smooth muscles have less myosin than skeletal muscle longer myosin laments than skeletal muscle and surface is covered in myosin heads. Contraction always begins in response to an action potential. Resting membrane potentials is anywhere from -40 and -80 mv. All neural re exes begin with a stimulus that activates a sensory receptor. By the efferent division of the nervous system that controls the response. Somatic re exes: re exes that involve somatic motor neurons and skeletal muscles. Autonomic re exes: re exes whose responses are controlled by autonomic neurons. By the cns location where the re ex is integrated. Spinal re exes: integrated in the spinal cord. Cranial re exes: re exes integrated in the brain. By whether the re ex is innate or learned innate: re exes were are born with learned re ex: pavlov"s dog the number of neurons in the re ex pathway.
