Cochlea.
11 mS
Messages from the femoral nerve are sent to the brain through a series of electrical impulses. These impulses travel along the nerve fibers of the femoral nerve until they reach the spinal cord, where they are then transmitted up to the brain via the spinal cord's sensory pathways. Once in the brain, the messages are interpreted and processed to produce a response or sensation.
because it is the cells
Yes, a stimulus needs to reach a certain threshold level of strength in order to generate a nerve impulse. This threshold is required to depolarize the cell membrane and initiate the action potential. If the stimulus is not strong enough to reach this threshold, no nerve impulse will be generated.
chemicals
A substance that decreases membrane permeability to sodium would decrease the probability of generating a nerve impulse. This is because sodium ions play a critical role in the depolarization phase of an action potential by entering the cell, so if their permeability is reduced, it hinders the ability to reach the threshold for generating an impulse.
Damage to the cribriform plate, which is part of the ethmoid bone in the skull, can harm the sense of smell. The olfactory nerve fibers pass through tiny openings in the cribriform plate to reach the olfactory bulb in the brain. Damage to this area can disrupt these nerve fibers and affect the sense of smell.
The speed of nerve impulse transmission changes as the body ages. In infants, the transmission speed is only about half that seen in adults. By age five, most people have attained the adult velocity. A gradual decline in conduction velocity begins as people reach their 20s, and continues for the remainder of life. Another factor that influences conduction velocity is the length of the nerve itself. An impulse that has to travel a longer distance will take longer. Some nerves are naturally longer than others. Measurement of nerve conduction takes into account the length of the target nerve. Some other factors are: · Initiation of action potential in nerve fibers; · Conduction of impulse; · Release of acetylcholine from the nerve terminals; · Binding of acetylcholine to receptors of the motor end plate; · Depolarization of the end plate; · Initiation of action potential in muscle fibers; · Muscle contraction.
It allows nerve signals, such as pain, to reach your brain from various parts of your body.
A neuron is an individual cell in the PNS or CNS that can be excited and conduct impulses along its axon. A nerve is a bundle of multiple neuron fibers that each are carrying their own signals. They are protected by connective tissue. Eventually the neuron fibers diverge away from the nerve to reach their destination.
Hair cells in the ear stimulate the auditory nerve by converting sound vibrations into electrical signals. When sound waves reach the ear, they cause the hair cells to move, which in turn triggers the release of neurotransmitters. These neurotransmitters then activate the auditory nerve fibers, sending signals to the brain for processing and interpretation of sound.
A nerve impulse that originates in the precentral gyrus of the cerebrum is responsible for initiating voluntary muscle movements. It travels along the corticospinal tract, crosses over to the opposite side of the brainstem, and descends through the spinal cord to reach the muscles that are involved in the intended movement. This process allows for precise and coordinated control of voluntary movements throughout the body.