We will cover much of the same material, although the change in texts will mean some change in the information. The neurotransmitter acetylcholine is secreted by the post-ganglionic fibers on the target organ.
Meditation is likely to increase the neural activity in the system.
The binding of myosin with actin is inhibited by troponin in striated muscle but by myosin light chain phosphatase in smooth muscle. Contraction in smooth as well as striated muscle can be initiated only by depolarizing the muscle cell membrane. Vibration of the oval window directly causes the hair cells on the tectorial membrane to bend creating neural responses. Vibration of the oval window generates fluid waves in the cochlea that cause the tectorial membrane to vibrate against the hair cells that are embeded in the more stable basilar membrane. Vibration of the oval window generates fluid waves in the cochlea that cause the flexible basilar membrane to vibrate resulting in a shearing of the hair cells against the stiffer, overlying tectorial membrane.