Ch. 10 highlighted info- Mrs. Neutzlings Class
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| There are more than__ ____ nerve cells | 100 billion
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| The nervous system is classified into 2 major divisions, which are? | Central Nervous System (CNS) & the Peripheral Nervous System (PNS)
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| The CNS consists of the ___ & ___ ____ | Brain & Spinal Cord
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| The PNS consists of? | Spinal Nerves, Cranial nerves, plexuses & peripheral nerves throughout the body.
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| In addition to the spinal & cranial nerves the PNS also contains a large group of nerves that function involuntarily or automatically, w/out conscious control. These nerves belong to the? | Autonomic Nervous System (ANS)
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| Some of the autonomic nerves are ____ nerves and others are ______ nerves | Sympathetic, Parasympathetic
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| The _____ nerves stimulate the body in times of stress & crisis | Sympathetic
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| The¬¬¬ _____nerves normally act as a balance 4 the sympathetic nerves | Parasympathetic
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| A ____ is a large network of nerves in the PNS. | Plexus
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| A ____ is an individual nerve cell | Neuron
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| A ____ begins an impulse in the branching fibers of the neuron, which are called? | Stimulus, Dendrites
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| Axons can be covered with a fatty tissue called? | Myelin Sheath
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| The ____ ____ gives a white appearance to the nerve fiber- hence the term white matter, as in parts of the spinal cord and the white matter of the brain and most peripheral nerves. | Myelin Sheath
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| NOTE: | The gray matter of the brain and spinal cord is composed of the cell bodies of neurons that appear gray because they are not covered by the myelin sheath
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| The space where the nervous impulse jumps from one neuron to another is called? | Synapse
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| The transfer of the impulse across the synapse depends on the release of a chemical substance called a? | Neurotransmitter
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| Example of Neurotransmitter is? | Acetylcholine
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| Peripheral nerves that carry impulses to the brain and spinal cord from stimulus receptors is called? | Sensory Nerves
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| Examples of sensory nerves | Skin, eye, ear, and nose
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| Peripheral nerves that carry impulses from the CNS to organs that produce responses are? | Motor Nerves
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| Examples of Motor nerves are? | Muscles & glands
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| There are 4 types of Glia (neuroglia) cells. They are? | Astrocytes (astroglial cells) Microglial cells, Oligodendroglial Cells, Ependymal cells
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| ? cells are supportive & connective in function | Neuroglial
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| The ---- controls body activities, it weighs about 3 lbs in adults and has many different parts, all of which control different aspects of body functions. | Brain
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| The largest part of the brain is the thinking area or ________ | Cerebrum
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| On the surface of the brain | Cerebral Cortex
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| Folds are called | Gyri
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| Grooves are known as? | Sulci
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| The brain is divided in ½ a rt side & left side which are called? | Cerebral Hemispheres
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| In the middle of the cerebrum, there are spaces, or canals called | Ventricles
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| Ventricles contain a watery fluid that flows throughout the brain and around the spinal cord. The fluid is called? | Cerebrospinal Fluid (CSF)
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| Pons & medulla are part of the? | Brainstem
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| Cerebellum is located? | Beneath the posterior part of the cerebrum
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| Nerves tracts cross from right left and left to right in the _____ _____. | Medulla Oblongata
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| The medulla oblongata contains 3 important vital centers that regulate internal activities of the body | Respiratory Center, Cardiac Center & Vasomotor Center
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| Affects (constricts or dilates) the muscles in the walls of blood vessels | Contains the center
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