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Peripheral Nervous System
Your Nervous System Peripheral Nervous System
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Engage NFL v. Athlete You will have 10 minutes to work with your team to gather information to defend your stance. Important Questions to think about: Should the NFL do something about the alarming increasing rates concussions? Who should be held responsible for medical injuries pre and post NFL careers? How does money affect a positions side within the debate? DATA! DATA! DATA!
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Research Paper Abstract - Purpose of research
Introduction – Background information on topic (1 -2pgs) Literature Review (4 – 5 pg) These are your body paragraphs! Methodology Results Discussion (1 – 2 pgs) Connecting literature review to analysis Limitations (½ - 1 pg) References/ Work Cited Page
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Central Nervous System Quiz
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1.) Which sensory nerve is responsible for equilibration, static sense and hearing?
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2.) Nerve I, olfactory, is responsible for what sensory sensation?
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3.) Which of the following is not a division of the brain?
Cerebrum Diencephalon Cerebellum Brain Stem Epiglottis
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List the lobes of the brain in alphabetical order
Insula
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9.) Which lobe of the brain is responsible for memory and interpretation of taste?
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10.) Broca’s area is responsible for….
A. Acoustic Capacity B. Speech Production C. Processing external stimulus D. Recognition of spoken word b
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11.) Identify this region of the brain
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12.) T/F The spinal cord functions as a conduction center for nerve impulses and the center for spinal reflexes.
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13.) Identify this region
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14.) Which sensory neuron is responsible for salivation, sensations on the skin and viscera?
Trigeminal Facial Glossopharyngeal Vagus
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15.) Patients who have had a stroke tend to have poor facial motor muscle movements and chewing capacity. Which nerve is MOST likely affected during a stroke. Facial Oculomotor Vagus Trigeminal
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Explain Section 35-3 The Nervous System is divided into
Central nervous system Peripheral nervous system Sensory nerves Motor nerves which consists of that make up Autonomic nervous system Somatic nervous system which is divided into Sympathetic nervous system Parasympathetic nervous system
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PNS NERVES that connect the central nervous system to the rest of the body Motor Division – impulses from CNS to muscles or glands Two Parts: Somatic Nervous System Autonomic Nervous System Sensory Division – transmits impulses from sense organs to CNS
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Motor Division PNS
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Somatic Nervous System
Controls voluntary movement of the skeletal muscles
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Autonomic Nervous System
Controls involuntary actions Subdivided into two system that have opposite effects on the same organs: Parasympathetic – decreases heart rate Controls internal organs during normal activity Sympathetic – increases heart rate Controls internal organs during high stress activity
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Sensory Division PNS
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Sensory Receptors WRITE INFO ON CONCEPT MAP
5 categories
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1. Pain Receptors Throughout body; except brain
Respond to chemical released by damaged cells Important to recognize Danger Injury Disease
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2. Thermoreceptors In skin, body core, hypothalamus
Detect variations in body temperature
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3. Mechanoreceptors Skin, skeletal muscle, and inner ears Sensitive to
Touch Pressure Stretching of muscles Sound motion
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4. Chemoreceptors Nose and Tongue Chemical in external environment
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Figure 35-14 The Eye Section 35-4 Choroid Retina Blood vessels
Optic nerve Fovea Vitreous humor Sclera Ligaments Iris Pupil Cornea Aqueous humor Lens Muscle
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5. Photoreceptors Eyes Sensitive to Light
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Vision Cornea Iris Pupil Lens Retina Helps focus light
Filled with aqueous humor Iris Back of cornea Colored part of eye Pupil Tiny muscles regulate the size Regulates amount of light Lens Small muscles change its shape to focus on object near and far away Behind lens eye filled with vitreous humor Retina Has photoreceptors No photoreceptors where optic nerve passes through the back of the eye; blind spot Two types Rods – black and white Cones – color
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Pathway for Vision Reception
Light cornea iris and pupil lens Retina to photoreceptors Rods Cones – Fovea Optic Nerve Brain
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Figure 35-15 The Ear Section 35-4 Auditory canal Tympanum Round window
Eustachian tube Bone Cochlea Cochlear nerve Semicircular canals Oval window Stirrup Anvil Hammer
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Hearing and Balance Ear Two Functions Hearing
Detecting Positional change to movement
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Hearing Sound – air vibrations
Auditory canal – funnels air to tympanum (ear drum) Tymapnum – vibrates Hammer, Anvil, Stirrup- vibrate and transmit vibrations to oval window Cochlea – filled with fluid and vibrations create pressure waves in the inner ear Tiny hairs respond to waves and send messages to brain via the cochlear nerve
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Balance Semicircular Canals 3 canals that form half circles
Filled with fluid and hairs that detect motion of head in relation to gravity
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Figure 35-15 The Ear Section 35-4 Auditory canal Tympanum Round window
Eustachian tube Bone Cochlea Cochlear nerve Semicircular canals Oval window Stirrup Anvil Hammer
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Smell and Taste Chemoreceptors pick up chemical reception in nose and mouth Smell – olfactory bulb Taste – taste buds Salty Bitter Sour Sweet
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The Senses of Smell and Taste
Section 35-4 Cerebral cortex Nasal cavity Taste bud Smell sensory area Taste Thalamus Olfactory (smell) bulb nerve Smell receptor Taste pore Taste receptor Sensory nerve fibers
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Touch and Related Senses
Largest sense organ? SKIN Sensory Receptors Temperature Touch Pain Greatest density of touch receptors Fingers Toes Face
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Concept Map Section 35-3 The Nervous System is divided into
Central nervous system Peripheral nervous system Sensory nerves Motor nerves which consists of that make up Autonomic nervous system Somatic nervous system which is divided into Sympathetic nervous system Parasympathetic nervous system
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Elaborate Reflex Arc Lab
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