Nervous system TBL Flashcards
The nervous system regulates body activities by
Releasing chemical signals via a duct which are long acting
Releasing chemicals into the bloodsteam which become active rapidly
Producing long acting potent signals that take time to accumulate
Responding rapidly using electrical signals which are rapid but short lived
Responding rapidly using electrical signals which are rapid but short lived
The sensory function of the nervous system is to
conduct impulses from the CNS to cardiac muscles
conduct impulses from the brain to the spinal cord
conduct impulses from the CNS to skeletal muscles
carry impulses from receptors tom CNS
carry impulses from receptors tom CNS
The location of the neuronal nucleus is within the
cell body
dendrites
synaptic end bulb
Axon
cell body
The Nodes of Ranvier are located in
gaps between synapses
gaps in the myelin sheath
located in the nucleus
encircle PNS axons
gaps in the myelin sheath
The nerve cells that support and nourish the neurones are called
dendtritic cells
langerhans cells
insulators
glial cells
glial cells
The myelin sheath within the central nervous system is made by
Astrocytes
Oligodendrocytes
Neuron cell membranes
Schwann cells
Oligodendrocytes
Depolarisation of the conducting nerve cells involves
the opening of potassium voltage channels in response to a stimulus, allowing an influx of positive charge
the action of Sadium/Potassium pump pushing out more positive charge than is allowed in
the openeing of potassium channels to release potassium from the cell to allow the cell interior to return to a negative state
the opening of voltage sensitive sodium channels in response to voltage changes caused by a suprathreshold stimulus, allowing an influx of a positive charge
the opening of voltage sensitive sodium channels in response to voltage changes caused by a suprathreshold stimulus, allowing an influx of a positive charge
What is a synapse?
a region where communication occurs between two neurons
a region where there is no myelin encircling the axon
a gap between two cell bodies
a space between two neurological cells
a region where communication occurs between two neurons
Which is the largest part of the brain?
Brain stem
Cerebrum
Cerebellum
Diencephalon
Cerebrum
Cerebrospinal fluid (CSF) is produced by the
Central canal
Fourth ventricle
Subarachnoid space
Choroid plexuses
Choroid plexuses
CSF is drained back into the systemic circulation at the
The median aperture in the fourth ventricle
Arachnoid villi within the superior sagittal sinus
The cerebral aqueduct
Central canal of the spinal cord
Arachnoid villi within the superior sagittal sinus
The limbic system is
A processing centre for fine motor movements of fingers and hands
The centra for higher cognitive function where reason and problem solving and short term memories are stored
A sensory processing centre in the brain to interpret auditory information
The centre for emotional memory and survival behaviour modulation, linked closely with the sense of smell
The centre for emotional memory and survival behaviour modulation, linked closely with the sense of smell
Epilepsy can be the result of
A nutritional deficiency disease
Systemic vascular disease
Brain trauma, infection, stroke or brain tumour formation
Diabetes
Brain trauma, infection, stroke or brain tumour formation
The word Aura is described as
The awareness throughout the seizure
A sensation that represents a warning to the individual prior to a seizure
The twitching during the early part of a seizure
The feeling that remains with the individual sfter a fit
A sensation that represents a warning to the individual prior to a seizure
