Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
Describe nervous system |
Is the master controlling and communicating system of the human body |
|
|
Functions of nervous system |
Body response to temperature Gathering info from inside and outside the body. Transmitting info to the processing area of the spinal cord and brain Processing the info to determine the best response |
|
|
What are the names of the two parts to the nervous system |
Central nervous system and the peripheral nervous system |
|
|
What are the two main characteristics of neurons |
Irritability and conductivity |
|
|
What is a cell body and it’s function |
The centre of the neuron with a nucleus and cytoplasm Forms the grey matter of the nervous system and processes and transmits information |
|
|
What are dendrites and it’s function |
Short branching process of cell body . Transmits impulses towards the cell body |
|
|
What is an axon and it’s fucjtion |
A long single nerve fibre attached to the cell body Transmits impulses away from the cell body |
|
|
What are end feet / axon terminals and it’s fucntin |
Extension of axon that become tiny fibre and an enlarged end Allows transmission of nerve impulses to the dendrites of the next neuron |
|
|
What are impulse conductions |
Nerve impulses only travel in one direction Neurons don’t touch each other Most synapses are between the axon on one neuron and the dendrite of the next neuron The neuron from which the impulse |
|
|
Spinal nerves |
8 cervical 12 thorax 5 lumbar 5 sacral 1 coccyx |
|
|
Parasympathetic actions |
Most active when body is at rest Releases acetylcholine Slows action of heart Conserves energy Promotes digestion |
|
|
Parasympathetic actions |
Most active when body is at rest Releases acetylcholine Slows action of heart Conserves energy Promotes digestion |
|
|
Sympathetic action |
Activated during excitement or stress Releases noradrenaline Stimulates adrenal medulla to release adrenaline Produces pounding heart beat Cold sweating skin Rapid breathing Dilated pupil to increase light |
|
|
What does the central nervous system consist of |
Brain and spinal cord |
|
|
What does the central nervous system consist of |
Brain and spinal cord |
|
|
What does the peripheral nervous system consist of |
31 pairs of spinal nerves 12 pairs on cranial nerves Autonomic nervous system |
|
|
Describe cell body structure and it’s function |
Centre of the neuron with a nucleus and cytoplasm Forms the grey matter of the nervous system Processes and transmits information |
|
|
Describe cell body structure and it’s function |
Centre of the neuron with a nucleus and cytoplasm Forms the grey matter of the nervous system Processes and transmits information |
|
|
Describe dendrites and it’s fucntion |
Short branching processs of cell body Transmits impulses towards the cell body |
|
|
Describe axon and it’s fucbtion |
Long single nerve fibre attached to the cell body Transmits impulses away from the cell body |
|
|
Describe dendrites and it’s fucntion |
Short branching processs of cell body Transmits impulses towards the cell body |
|
|
Describe end feet and it’s fucbtion |
Extension of axon that become tiny fibres Allows transmission of nerve impulse to the dendrites of the next neuron |
