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AHP 106 Chapter 6
The Nervous System
| Question | Answer |
|---|---|
| Main organ of the nervous system | Brain, Spinal cord and Nerves |
| The nervous system is divided into 2 parts | Central Nervous and Peripheral Nervous system |
| A nerve cell | Neuron |
| Structure of a single neuron | Dendrites, Cell body, Axon, Synapse and Synaptic Knobs |
| Dendrites carry | Incoming messages |
| A neuron can have ____ to _____ dendrites | 1 to 1,000 |
| Th more dendrites a neuron has the more ______ the neuron can process | Incoming Information |
| The dendrite carry messages ______ the cell body | Toward |
| The cell body contains the _____ and _______ for protein synthesis | Nucleus, Organelles |
| _____ are made in the body of a neuron through protein synthesis | Neurotransmitters |
| Axons carry | Outgoing messages |
| A cell can have _____ axons | 1 |
| The axon carry messages ______ the cell body | Away from |
| A ____ is a junction or space between a neuron and another cell, muscle or gland | Synapse |
| Found at the end of each axon | Synaptic Knobs |
| The axon of a neuron is covered by the | Myelin Sheath |
| The types of neurons | Multipolar, Bipolar and Unipolar |
| Most common type of neuron of the brain and spinal cord; Many dendrites and one axon; Also referred to as motor neurons, and carry messages away from the brain | Multi-polar |
| Sensory neuron; Found in the nasal cavity, inner ear and retina of the eye; sensory messages travel toward the brain | Bipolar |
| One process that serves as dendrite and axon with the cell body pushed off to the side; Found where other bipolar sensory neuron are not found an travel toward the brain | Unipolar |
| Impulses that travel away from the brain | Efferent / Motor |
| Impulses that travel toward the brain | Afferent / Sensory |
| The serous membrane that covers the brain and spinal cord | Meninges |
| The brain can be divided into 4 sub-sections | Cerebrum, Diecephalon, Brainstem and Cerebellum |
| The peripheral nervous system is also known as | Nerves |
| The abbreviation for Central Nervous System is | CNS |
| The abbreviation for Peripheral Nervous System | PNS |
| The PNS can be divided into 2 divisions | Somatic and Autonomic |
| The somatic division of the nervous system control | Skeletal Muscle |
| The autonomic division of the nervous system control | Cardiac and Smooth Muscles of Hollow Organs |
| The autonomic division of the nervous system is further divided into 2 additional sub-divisions | Parasympathetic and Sympathetic |
| Parasympathetic division of the PNS control | Digestion, Defecation and Urination |
| The sympathetic division of the PNS control | Fight or Flight |
| The clear, colorless fluid of the brain and spinal cord | Cerebrospinal Fluid |
| Abbreviation for Cerebrospinal Fluid | CSF |
| A bundle of nerve fibers | Nerve |
| How many cranial nerves are in the human body | 12 pairs |
| How many spinal nerves are in the human body | 31 pairs |
| The optic nerve controls | Vision |
| The olfactory nerve controls | Smell |
| The facial nerve control | Taste |
| The auditory nerve controls | Hearing |
| The glossopharyngeal nerve controls | Taste and Swallowing |
| A _____ is a involuntary, predictable, motor response to a stimulus w/o conscious thought | Reflex |
| The nervous system main function | Internal Communication of the Human Body |
Created by:
RWhatleyNCMA