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Nervous System

Yoga Teacher Training

QuestionAnswer
What is the Nervous System comprised of? The brain, the spinal cord and nerves.
What is the Central Nervous System? It is the brain and spinal cord which is connected to the rest of the body by the peripheral nerves.
What is the main function of the Peripheral Nervous System? It sends info to the CNS which processes it and sends signals back to the PNS.
What does the brain consist of? The cerebrum, the cerebellum, the brain stem and the hypothalamus.
Where is the Spinal Cord located? It extends from the lowest part of the brain stem through the spinal vertebrae ending at the first lumbar vertebra and gives off 31 pairs of spinal nerves (part of the PNS)
What is the function of the Spinal Cord? It sends messages about feeling and movement from the body and brain.
What does the PNS consist of? 12 Pairs of cranial nerves (smell, sight, taste) 31 Pairs of spinal nerves
The PNS is broken down into 2 parts The Somatic Nervous System and The Autonomic Nervous System ( please refer to handout from Claire for further explanation)
What are the main parts of the outer layer of the brain? The cerebrum, the cerebellum and the brainstem
What is the function of the cerebrum? It is the largest part of the brain located at the front . It initiates and coordinates movement and regulates temp. It also enables speech, judgement, thinking, problem solving, emotions and learning. Aswell as vision, hearing, touch and sense.
What is the cerebral cortex? It is the outer gray matter covering the cerebrum. It is a large surface and comprises of the half of the brain's weight.
What is the function of the cerebral cortex? It is divided into two halves which join at the medial longitudinal fissure. The right controls the left side of the body and the the left side controls the right side of the body. The 2 halves communicate to eachother via the corpus callosum.
Where is the corpus callosum located It is located at the centre of the cerebrum
What is the brainstem? Known as the middle of the brain it connects the cerebrum with the spinal cord. It inc. the midbrain, the pons and the medulla.
Explain the function of the mid brain? It is very complex with a range of neuron clusters and neutral pathways. These facilitate hearing and movement to calculating responses and environmental changes. It also contains the substantia nigra an area affect by Parkisons disease.
Explain Pons (part of the brain stem)? It is the origin for 4 of the 12 cranial nerves which enable tear production, chewing, blinking, focusing, balance, hearing & facial expression. Connected between the midbrain and medulla.
Explain the Medulla? Located where the brain meets the spinal cord. It is essential for survival. It regulates bodily activities: heart rhythm, breathing, blood flow and oxygen/carbon dioxide levels. Produces reflexive activities: sneezing, vomiting, coughing & swallowing.
What is the spinal cord? Extends from the bottom of the medulla through the bottom of the skull. Its supported by the vertebrae and sends messages to and from the brain to the rest of the body
Gray Matter V's White Matter Gray matter is responsible for processing and interpreting info. White transmits info to other parts of the nervous system.
How does the brain work? It sends and receives chemical and electrical signals throughout the body. Each signal controlling different processes and the brain interprets each i.e. some make you feel tired and others pain
What is the limbic system? Deep inside the brain and involves our behavioural and emotional responses especially for our need to survive. Thalamus & hypothalamus (hunger, mood) and basal ganglia (info processing) are involved in the limbic system.
What are the 2 main structures of the limbic system? The Hippocampus and the Amygdala
What is the function of the hippocampus within the limbic system? Comes as a pair one on each side of the brain. Resembles a seahorse shape. Is the memory centre of our brain. Helps us associate memories with various sense (gingerbread at Xmas). Important for spacial orientations and how to navigate in the world.
Created by: Niamh Scanlon
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