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Dictionary » M » Medulla

Medulla

Medulla

The inner part of an organ. A white fatty substance that forms a medullary Sheath around the axis cylinder of some nerve fibers.Lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata); the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning.The inner part of an organ or structure in plant or animal.A white fatty substance that forms a medullary Sheath around the axis cylinder of some nerve fibers.The central part of an organ, usually a word relating to the centre of the [[brain.


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PostSynaptic Neuron

... causing impulse conduction. This is called indirect synaptic tranmissions. It is slower but lasts longer. Your second question is simple: Its not Medulla....It is Cerebral Cortex. Hope it helps.

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by freshbiology
Fri Jul 24, 2009 4:40 pm
 
Forum: General Discussion
Topic: PostSynaptic Neuron
Replies: 3
Views: 120

PostSynaptic Neuron

... The second question is, 2. Your ability to understand and answer a question is controlled by your... A. Cerebellum B. Cerebral Cortex C. Medulla D. Hypothalamus The Cerebellum being the region of the brain to control muscle movement The Cerebral Cortex, the outer lining of the cerebral ...

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by Asanii
Fri Jul 24, 2009 2:28 am
 
Forum: General Discussion
Topic: PostSynaptic Neuron
Replies: 3
Views: 120

Re: Vagus Nerve

... Parasympathetic nervous system ) Preganglionic parasympathetic fibres of the 10th cranial (vagus) nerve arise from two different sites in the medulla oblongata. Neurons that slow heart rate arise from a part of the ventral medulla called the nucleus ambiguus, while those that control functions ...

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by sanjidcapa
Tue May 05, 2009 9:15 am
 
Forum: Human Biology
Topic: Vagus Nerve
Replies: 16
Views: 39282

Sinoatrial Node ,

... broke it down beyond the celiac artery (sweet). Also I found out that the Vagus nerve plays a vital role with nerves especially the cranial and medulla oblongata it extend all the way from the cranial to the anus nerve. You once said that the (SA )or sinoatrial node can keep the heart beating ...

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by CXCR4
Thu Feb 12, 2009 6:57 pm
 
Forum: General Discussion
Topic: controling Nerve of the Brain? Which One
Replies: 7
Views: 2434

Re: controling Nerve of the Brain? Which One

... what you asked about, that would be the remnants of our ancestors' brain, the more primal part. It is the brainstem. It is divided into the medulla,the Pons, and the Midbrain. Hope what I provided was helpful. :)

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by plasmodesmata11
Fri Feb 06, 2009 3:53 am
 
Forum: General Discussion
Topic: controling Nerve of the Brain? Which One
Replies: 7
Views: 2434
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