Peripheral Nervous System Your Nervous System Peripheral Nervous System

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!

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

Central Nervous System Quiz

1.) Which sensory nerve is responsible for equilibration, static sense and hearing?

2.) Nerve I, olfactory, is responsible for what sensory sensation?

3.) Which of the following is not a division of the brain? Cerebrum Diencephalon Cerebellum Brain Stem Epiglottis

List the lobes of the brain in alphabetical order 4. 5. 6. 7. 8. Insula

9.) Which lobe of the brain is responsible for memory and interpretation of taste?

10.) Broca’s area is responsible for…. A. Acoustic Capacity B. Speech Production C. Processing external stimulus D. Recognition of spoken word b

11.) Identify this region of the brain

12.) T/F The spinal cord functions as a conduction center for nerve impulses and the center for spinal reflexes.

13.) Identify this region

14.) Which sensory neuron is responsible for salivation, sensations on the skin and viscera? Trigeminal Facial Glossopharyngeal Vagus

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

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

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

Motor Division PNS

Somatic Nervous System Controls voluntary movement of the skeletal muscles

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

Sensory Division PNS

Sensory Receptors WRITE INFO ON CONCEPT MAP 5 categories

1. Pain Receptors Throughout body; except brain Respond to chemical released by damaged cells Important to recognize Danger Injury Disease

2. Thermoreceptors In skin, body core, hypothalamus Detect variations in body temperature

3. Mechanoreceptors Skin, skeletal muscle, and inner ears Sensitive to Touch Pressure Stretching of muscles Sound motion

4. Chemoreceptors Nose and Tongue Chemical in external environment

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

5. Photoreceptors Eyes Sensitive to Light

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

Pathway for Vision Reception Light cornea iris and pupil lens Retina to photoreceptors Rods Cones – Fovea Optic Nerve Brain

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

Hearing and Balance Ear Two Functions Hearing Detecting Positional change to movement

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

Balance Semicircular Canals 3 canals that form half circles Filled with fluid and hairs that detect motion of head in relation to gravity

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

Smell and Taste Chemoreceptors pick up chemical reception in nose and mouth Smell – olfactory bulb Taste – taste buds Salty Bitter Sour Sweet

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

Touch and Related Senses Largest sense organ? SKIN Sensory Receptors Temperature Touch Pain Greatest density of touch receptors Fingers Toes Face

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

Elaborate Reflex Arc Lab