Which of the following are characteristics of anisotonic muscle twitch?
- The length of the muscle remains constant
- The length of the muscle remains constant and latent periodthan in an isometric twitch
- The muscle shortens at a constant velocity and the length ofthe latent period is longer than in an isometric twitch
- The muscle shortens at a constant velocity
The afferent division of the peripheral nervoussystem
- Transmits action potentials to sensory organs
- Conveys action potentials to the CNS
- Neither transmits action potentials to sensory organs norconveys action potentials to the CNS
The resting potential of a neuron. E.g. -70mv:Â Â Â Â Â Â Â Â Â
- There is a net flux of positive ions out the cell
- There is a net flux of positive ions into the cell
- The influx of Na+ ions through its channel is equal to theefflux of K+ ions through K channels
- The influx of Na+ ions through NA channel is greater than theefflux of K+ through K channels
Relative refectory period occurs when:
- K+ gates are closed
- K+ gates are open
- Ca++ gates are open
Steroid hormones produce their effects by
- Combining with receptors located on the surface of cellmembranes
- Causing cyclic AMP to be produced
- Activating the action of genes
