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Can nerve impulses from the brain cause the release of hormones?
sure they do all the time
When nerve impulses from several presynaptic neurons stimulate a single postsynaptic neuron at the same time it is called?
chemical synapse
How long does the effect of a electrical signals the effect of chemical signals tend to last?
Nerve impulses are electrical whereas hormones are chemical. Compared to the effects of electrical signals chemicals are slower to act and last for a long time
Why does a message moving along nerve pathways take time to get to the brain?
because its lazy!!
Why do nerve and mucle cells contain more mitochondria than other cells?
Because nerves performe much more activity than skin cells. Where skin cells are dividing. nerves send electric impulses throught the body all the time. The impulses involve use of ATP which is produced in mitochondria.
Can nerve impulses from the brain cause the release of hormones?
sure they do all the time
From the time a tactile stimulus is detected by a receptor in the foot to the time the resulting nerve impulses arrive in the postcentral gyrus of the brain the impulses will have traveled over?
three
What is the time during which a nerve membrane cannot be stimulated to carry impulses?
This is known as the menstrual cycle.
When nerve impulses from several presynaptic neurons stimulate a single postsynaptic neuron at the same time it is called?
chemical synapse
Does neural impulses travel faster than hormonal messages?
Nerve impulses move at nearly the speed of light. Hormones are chemicals that are released over a period of time to Crete changes in a multicellular organism. So, naturally, nerve impulses are faster.
How do muscles know when it's time to move?
by nervous system Your body knows when to move because it sends electrical impulses to the brain
Factors that effect reaction time?
The sensitivity of the receptors, velocity of nerve conduction, and the number of neurons and synapses involved to name a few.
Why is it impossible to have a reaction time equal to zero seconds?
In absolute terms, no. If the reaction hasn't had any time to occur there is no reaction time to report.OTOH, you could say yes if the reaction time is
What discoveries did Helmholtz make that were relevant to psychology?
Helmholtz contributed through mathematcis, physicology, optics and acoustics (wherein he measured the speed of light in the retina), biology and chemistry. His most significant contribution is his precise measurement of nerve impulses when he proved this with the experiment of the frog leg that he electrically stimulated. The frog leg, although not attached moved. He was able to compute the exact time of when he administered the stimulation to the time it took for the leg to move, thereby calculating to the exact seconds the speed of nerve impulses.
Can a nerve fibre and nerve both carry sensory and motor impulses?
There are the Mixed Nerves in the spinal column that carry both sensory and motor nerves, but these neurons have 2 different jobs that they do,& I know of no neurons doing both as the impulses travel to 2 different locations which couldn't be done at the same time.
How long does the effect of a electrical signals the effect of chemical signals tend to last?
Nerve impulses are electrical whereas hormones are chemical. Compared to the effects of electrical signals chemicals are slower to act and last for a long time
Why does a message moving along nerve pathways take time to get to the brain?
because its lazy!!
