Cranial+ Spinal Nerves..

With a new professor, Mr. Brad Haskell. It was an adventure all right. I actually found it tough learning from a new professor who I wasn't used to his teaching and lecturing. But I followed along somewhat, and disscussed gray and white matter. The dorsal root deals with sensory, while the ventral root is motor based.
Also learned about descending is motor, and ascending is sensory. Plexus are networks of axons.
Facilius Gracilis-procioception touch/ pressure from the lower limbs. Fesciulus Cuneatus- touch/ pressure from the upper limbs. Antero-lateral Spinothalamic Tract-pain/ temperature deep pressure. Antero-lateral Cortospinal Tract- impulses to lower order neurons in the spinal cord. Ventral Arteries-arterial blood to the Circle of Willis.
In day to day life, if the Cirle of Willis is mixed up by either a blood clot, or too much blood in certain area, it's good to know the direction of travel of blood. Especially people dealing or overcoming a stroke.

The Brain

Consisting of three major "primary" regions. The first is called Proencephalon, next is the Mesencephalon, and last but not least is the Rhombencephalon. The brain along with the spinal cord are "protected" by meninges, which are three connective tissue membranes. The three layers are named Dura Mater, Arachnoid Mater, Pia Mater.
My favorite part of this lesson, would be the word Medulla Oblongata! Not only does it sound cool, but it makes you sound very intelligent too! The Oblongata relays messages back and forth from the brain and the spinal cord. It is also responsible for many autonomic functions in the body, such as breathing, blood pressure, swallowing, vomiting, and/ or relexes.
I remember in high school, my anatomy teacher always said it in a funny way. Ever since then I can correctly pronounce and say Medulla Oblongata in the funnest ways!

Starting off right into Anatomy part 2

Over the first week, we learned about the Nervous System. More specifically about the axons parts and pieces. Axons line the nervous system. They are longs fibers of nerve cells that carry efferent messages. (Efferent-carries away from reference point, also deals with motor neurons. The neuron sends electrical impulses from its cell body through the axon to target cells. Each nerve cell has one axon. Also how the neurotransmitters along with receptors allow dendrites to bind with other shapes. The neurotransmitter is the chemical in the chemically regulated channels (CRC).
I always love to learn new information especially dealing with our amazing human body. Some things we learn are just incredable, for example the fight or flight response (sympathetic)when your body goes through a stressful situation. I remember a couple Christmas Eve's ago, I was at my families regular holiday shin-dig.
When all of a sudden I felt as if I couldnt breathe and they was soemthing stuck in my throat. My parents rushed me to the emergency room and later that night, I was told I would never be able to eat peanuts, peanut butter, peanut flour, nothing that involved peanuts. At the age of 17, I had become allergic to peanut products. The fight or flight really took affect that night, thank goodness!