Nervous System Raven Brown P4
Major functions of the nervous system: Control the bodys thought, feeling, actions through sensory input, integration, and motor output.
Major divisions ans subdivisions:
Central Nervous System-->Brain & Spinal Cord-->Forebrain, Midbrain, Hindbrain-->Telencephalon, Diecephalon, Mesencephalon, Metencephalon, Mytetencephalon
Peripheral Nervous System-->Somatic nervous system & Autonomic nervous system-->Sympathic & Parasympathetic
Lobes and Their Functions
Frontal: self control, inhibition, emotions.
Parietal: voluntary movement, motor skill development, sensation, language comprehension
Temporal: auditory, memory, smell
Occipital: visual processing
Layers of the Menges: dura matter, pia matter, and arachnoid
Spaces and Ventricles: lateral, fourth, third, and gyri, sulci
Tissue of the Nervous System: used to support cells called neuroglia and nerve cells transmit electrical signals. CNS: astrocytes, microglial cells, and obligodendrocytes; PNS: satellite cells, schwann cells
Classification of Neurons: multipolar neurons have 3 or more processes & most common, bipolar neurons: have 2 processes, unipolar neurons have a single short processes.
Major functions of the spinal cord: connects a large part of the peripheral nervous system to the brain. .
The spinal cord also acts as a minor coordinating center responsible for some simple reflexes like the withdrawal reflex. Major parts of the spinal cord: cervical, thoractic, sacral, lumbar,
Action Potential: action potential occurs when the membrane potential of a specific cell location rapidly rises and falls: this depolarisation then causes adjacent locations to similarly depolarise.
Drugs that affect the brain: heroine, ecstasy, marijuana, methamphetamine, alcohol, cocaine, LSD, opioids, inhalents, MDMA, nicotine, psychedelics, GNB, Dissociative Drug
Diseases associated with the brain: Alzheimers, Parkinsons disease, Dementia
Major cranial nerves: olfactory nerves, optic nerve, oculomotor nerve, trochlear nerve, trigeminal nerve, abducent nerve.
Nerves of the body: 
Spinal nerves A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body. In the human body there are 31 pairs of spinal nerves, one on each side of the vertebral column
Neurotransmitters: acetylcholine, norepinephrine, serotonin, dopamine, GABA, glutamate, endorphines.
The major differences between the two systems are evident in the responses that each produces. The somatic nervous system causes contraction of skeletal muscles. The autonomic nervous system controls cardiac and smooth muscle, as well as glandular tissue
Compare and Contrast somatic and autonomic nervous system
The parts of the
reflex arc.