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Nerves
Nerves are thread-like structures that form a network of pathways that transmit information from the brain to the body and the body to the brain, in the form of electrical impulses.
1,605 Questions
Adult CNS neurons do not multiply. During development cells bud off from stem cells around the neural tube, controversially this is also thought to occur rarely in the adult CNS.
1. Action potential arrives at synaptic knob
2. This causes Ca+ gates on the presynaptic membrane to open and the influx of Ca+ ions into cell
The activity of acetylcholine in a synapse is terminated by?
Its degradation by a hydrolytic enzyme on the postsynaptic membrane.
Behaviors triggered by a reflex. Examples of this include sneezing after inhaling dust or the knee-jerk reaction when a doctor hammers your knee.
How many perineums are in the human body?
Perineum - One. It is the space between the anus and the scrotum or vagina.
a neuron which recieve both messages from afferent and efferent neuron...
three
Is it a pinched nerve that is causing the feeling of a electric shock in my right hand?
Could be a tight muscle in your upper back. This happens to folks who slouch at the keyboard. Carpal tunnel and other issues are not particularly an intuitive result of this, but it can be a cause. Make sure you are sitting in an ergonomic manner, feet on the floor, straight back and with the screen at eye level. There are good exercises to stretch your hand and advice to ice and rest your hand on the internet. If it continues, consult your doctor or an orthopedic specialist in hands.
Why is the part of the nervous system do the nerves in your arms and legs belong to?
That part of the nervous system is called the peripheral nervous system. Anything outside the brain and the spinal cord (central NS) belongs to that PNS.
Trochlear nerve conveys proprioceptor impulses from the medial rectus muscle to the brain?
false....SUPERIOR OBLIQUE MUSCLE
What is the nerve that sends messages to the brain from your ears?
Motor nerve , but not from ear from whole body , these motor nerves carry messages to the brain.
1. The cell body (or soma)
2) The axon
3) The dendrites
What determines whether the response of a receiving neuron is excitatory or inhibitory?
The type of neurotransmitter.
The absence or inhibition of AChE at a synapse would lead to?
The absence or inhibition of AChE at a synapse would lead to flaccid paralysis.
What is the synaptic transmission ACh broken down to?
My guess is that it gets hydrolyzed to choline and acetic acid
What event occurs during synapsis?
A synapse is a gap between one neuron and another. To communicate, a neurotransmitter has to be made and then used as a tool to stimulate the second neuron.
Synapses contain synaptic vesicles and other organelles such as the mitochondria.
Chemical neurotransmitters are manufactured by neurons in the main part of the cell, then stored in little bundles called synaptic vesicles and transferred to the synapses. They are then released into the space between the two neurons.
One type of neurotransmitter may stimulate and another type may be the opposite.
