1. nervous system Flashcards
(25 cards)
the PSN/ parasympathetic nervous system
“house keeping response” helps to keep homeostasis
where is the cerebral spinal fluid found?
in the centre of the grey matter
B vit for nervous system
choline- makes the myelin sheath that envelopes the nerves and acts as an insulation
calcium and mag for nervous system
facilitate nerve conductivity
EFAs for the nervous system
brains building blocks and as such are beneficial for hyperactivity
The sympathetic nervous system/ SNS
‘fight or flight’.
the PNS consists of what?
the nerves that connect the brain and spinal cord to the other body parts such as: cranial nerves, spinal nerves, and ANS
a stroke is
lack of blood flow to an area of the brain
functions of the cerebellum
-muscle co-ordination
-equilibrium/posture
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Ataxia is a condition where
drunk-like condition where movements become clumsy and disorganized due to injury to the cerebellum
epithalamus contains what gland and is part of what system
contains the pineal gland, which is part of the endocrine system.
the thalamus function
the sensory relay station from the body to the cerebral cortex
-controls emotions for alert or arousal mechanisms
hypothalamus
contains pituitary glans, plays an important role in the limbic system ( emotional/visceral brain) thirst, appitite, sex, pain and pleasure, body temp, water balance, sleep cycles and metabolism
4 regions of the brain
- brain stem
- diencephalon
- cerebellum
- cerebrum
the arachnoid mater
the middle layer of connective tissue with a few blood vessels
dura matter
the outer layer of connective tissue. It is double layered where it surrounds the brain
the Pia matter
innermost layer of connective tissue. It closely adheres to the brain and its blood vessels
the CNS consists of:
the brain and spinal cord
anoxia
“without oxygen”
dopamine and seratonin are:
neurotransmitters
acetylcholine
neurotransmitter released at the synapse between a neuron and a muscle cell
sensory( afferent) neuron
carries impulses from the sensory receptors
the blood brain barrier
formed by a 2 layer wall of astrocytes, helps protect the vital brain tissue from harmful chemicals which may be in the blood
myelin sheath
makes a protective blanket around the nerve and increases the transmission rate of nerve impulses
