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Cards In This Set
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What two organ systems are decidated to maintaining homeostasis?
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Nervous and endocrine systems
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How does the endocrine system communicate?
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Chemical messengers secreted into the blood
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What are these chemical messengers more commonly known as?
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Hormones
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How does the nervous system communicate?
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Electrical and chemical means to send messages very quickly from cell to cell
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What is the study of the nervous system?
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Neurobiology
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What are the primary subdisciplines of neurobiology?
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Neuroanatomy (study of structure) and neurophysiology (study of function)
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What are the 2 major anatomical subdivisions of the nervous system?
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Central Nervous System (CNS) and Peripheral Nervous System (PNS)
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What does the CNS consist of?
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Brain and spinal cord
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What protects the brain? the spinal cord?
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Cranium, vertebral column
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What makes up the PNS?
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All the nervous system except the brain and spinal cord; composed of nerves and ganglia
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What is a nerve?
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A bundle of nerve fibers (axons) wrapped in fibrous CT
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What is a ganglion?
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A knotlike swelling in a nerve where the cell bodies of neurons are concentrated
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The PNS is divided into ___ and ___ which are each divided into ___ and ___ divisions.
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Sensory and motor divisons; somatic and visceral
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The sensory (afferent) division functions to:
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Carry signals from various receptors to the CNS; the pathway that informs the CNS of stimuli in and around the body
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The somatic sensory divison carries signals from receptors in:
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The skin, muscles, bones, and joints
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