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What a nerve may stimulate in time of danger?
In times of danger, a nerve may stimulate the fight or flight response by activating the release of adrenaline and cortisol from the adrenal glands. This response prepares the body for physical action to either confront the threat or flee from it. Additionally, the nerve may also trigger increased heart rate, heightened senses, and tense muscles to help the individual respond quickly to the danger.
Can a nerve Cell replace itself after injury?
One of two thing can happen (depending on just how damaged). If it is a sensory nerve, that will not carry sensory impulses to the CNS. You may have a numb feeling in a small area or a very large area. If it is a motor nerve, you may not be able to move a muscle (or a group of muscles). That really is paralyzed means.
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.
Function of neurilemma in nerve cell regeneration?
Neurolemma is just an outer shell of the myelin sheath, it's function is to protect a myelinated cell from injury and aid in its healing from injury by allowing information to travel faster to the brain that an unmyelinated cell.
What is a neuroglandular junction?
A neuroglandular junction is the site where nerve fibers stimulate the release of hormones from endocrine glands. Nerve impulses trigger the release of neurotransmitters that can stimulate or inhibit hormone production and release. This communication pathway is important for coordinating physiological responses in the body.
What does nerve impulses stimulate?
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Regeneration of a nerve fiber in the pns is possible if?
Regeneration of a nerve fiber in the peripheral nervous system (PNS) is possible if the cell body of the nerve remains intact and the nerve fibers are only partially damaged. In this case, the Schwann cells in the PNS can guide the regrowth of the nerve fibers. However, regeneration is a slow process and may not always result in full recovery of function.
What is hGH endocrine hormone?
hGH (human growth hormone) is an endocrine hormone produced by the anterior pituitary gland. It plays a key role in growth, cell regeneration, and metabolism. It also influences muscle growth, bone density, and organ function.
The part of peripheral nerve tissue that helps promote regeneration of neurons is the?
The part of the peripheral nerve tissue that helps promote regeneration of neurons is the neurolemma. It refers to the thin sheath around a neural axon.
In which division of the nervous system would nerve regeneration be unlikely to occur?
In the central nervous system (CNS), which includes the brain and spinal cord, nerve regeneration is unlikely to occur due to limited regenerative capacity and the presence of inhibitory factors that hinder nerve growth. Conversely, in the peripheral nervous system (PNS), nerve regeneration is more possible, as peripheral nerves have a greater ability to regenerate under certain conditions.
Has important role in nerve fiber regeneration?
Yes, nerve growth factor (NGF) plays a crucial role in promoting the regeneration of nerve fibers by supporting the survival, growth, and differentiation of neurons. It helps in repairing damaged nerves and restoring their function.
What is the fibrous covering or nerve sheath which aids in fiber regeneration?
myelin sheath.
What cranial nerve carries smell impulses to the brain?
The olfactory nerve, also known as the first cranial nerve, transports impulses for sense of smell to the brain. The olfactory nerve is capable of regeneration.
What are Hoffman signs associated with DDD?
Hoffman's sign in physiology is a sign of nerve regeneration triggered by a stimulus of the distal part of an injured nerve.
What begins when a neuron is stimulate by another neuron in its environment?
A nerve impulse
Why are cathodal pulses required to stimulate a nerve?
Because the negative pulse mimics the effect of an action potential, depolarising the nerve. Therefore propogating the AP along the nerve
Is hgh legitimate?
HGH is a natural hormone produced by the human brain that influences the body's ability to grow (amongst other things). It can be produced naturally or a person can choose to stimulate the hormone's production by using various injections or taking dietary supplements (for example: http://www.growthdevelopment.net)
