Una persona comienza un programa de entrenamiento físico. La capacidad vital pulmonar de esta persona se midió durante un periodo de 60 días. La capacidad vital se
refiere a la cantidad de aire que se exhala en una respiración. Examina los datos de la
siguiente tabla:
Datos programa entrenamiento
5200
5150
.
5100
5050
5000
Capacidad vital
.
4950
.
4900
4850
.
4800
4750
10
20
30
40
50
Dias de entrenamiento

Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).