0
What else can I help you with?
Does the nerve impulse reaches the brain during reflex arc?
No, during a reflex arc, the nerve impulse does not reach the brain before the reflex action occurs. Instead, the impulse travels from the sensory receptor through the spinal cord to the motor neurons, which directly trigger a response. This allows for a quick reaction to stimuli, bypassing the brain for immediate response. The brain may become aware of the stimulus and the reflex action afterward.
If A nerve impulse travels through your nervous system at an avg rate of 132 m per s How much time does it take for an impulse a distance of 1.49 m to reach your brain?
11 mS
How are messages from the femoral nerve sent to the brain?
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.
Can part of the impulse in a reflex action reach the brain?
because it is the cells
Is conducting stimulus strong enough to generate a nerve impulse?
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.
When your nose is stuffy cannot reach nerve receptors to initiate an impulse that would result in smell or taste?
chemicals
What would a substance that decreases membrane premeability to sodium increase or decrease the probability of generating a nerve impulse?
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.
Is it true that nerve impulses move to the brain faster than they do to the spinal cord?
No, it is not true that nerve impulses move to the brain faster than they do to the spinal cord. In fact, nerve impulses traveling along sensory neurons typically reach the spinal cord first, as the spinal cord serves as the immediate processing center for reflex actions. From the spinal cord, some signals are then relayed to the brain for further processing. The speed of nerve impulses is primarily determined by the type of nerve fibers and their myelination, not the destination of the signal.
What senses is harmed with a damaged cribriform plate?
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.
1 List the physiological events that occur between delivery of the stimulus and the start of the recorded response?
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.
What role does the nerve cord inside of the vertebrate play in the body?
It allows nerve signals, such as pain, to reach your brain from various parts of your body.
How do hair cells in the ear stimulate the auditory nerve?
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.
