Nervous System. Organization of Peripheral Nervous System (PNS)
Nervous system notes copy OF THE NERVOUS SYSTEM CNS PNS Central Nervous System Peripheral Nervous...
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BODY SYSTEMS Unit 2: Cells & Systems
Transcript of Nervous system notes copy OF THE NERVOUS SYSTEM CNS PNS Central Nervous System Peripheral Nervous...
BODY SYSTEMSUnit 2: Cells & Systems
WHAT ARE WE GOING TO LEARN?
➤ How our body systems work together
➤ Describe the respiratory, circulatory, digestive, excretory, and sensory systems (That is 5 systems)!
➤ Describe the roles of organs and tissues in each system
➤ Describe the functions of types of cells in each system
➤ Describe how the body functions in response to the environment (changes).
WHAT ARE WE GOING TO LEARN?
Nervous (sensory) system
Respiratory system
Circulatory System
Digestive System
Excretory System
⚡ 💨 ❤ 💩🍌
Functions
Organs & Tissues
Cells
Medical Applications
Functions
Organs & Tissues
Cells
Medical Applications
Functions
Organs & Tissues
Cells
Medical Applications
Functions
Organs & Tissues
Cells
Medical Applications
Functions
Organs & Tissues
Cells
Medical Applications
HOW ARE WE GOING TO LEARN ALL THIS STUFF?!
➤ Format of class:
➤ Lecture
➤ Case Study
➤ Research
WHY THIS STUFF IS NOT JUST STUFF.
1. We need to understand how our body works so that we can make good decisions our health.
2. We need to understand how our body works so that we can understand how medicine, exercise, genetics, and diet affect our bodies.
3. We need to understand how our body works so that when we go to Body Worlds we can tell our family what is going on.
ON TILL MAY 31st!
NERVOUS SYSTEMUnit 2: Cells & Systems
FUNCTIONS OF THE NERVOUS SYSTEM
1) coordinates and controls the actions of all the organs and organ systems of the body
2) detects, processes and responds to environmental stimuli that is external or internal example: reflex
FUNCTIONS OF THE NERVOUS SYSTEM
1) coordinates and controls the actions of all the organs and organ systems of the body
HOW?
FUNCTIONS OF THE NERVOUS SYSTEM
Coordinates and controls the actions of all the organs and organ systems of the body.
HOW?
Senses (5): 1) sight, 2)hearing, 3) smell, 4) taste, 5) touch
actions: run (muscles), hide (heart rate), search (brain), remember (brain), move (muscles)!
FUNCTIONS OF THE NERVOUS SYSTEM
➤ 2) detects, processes and responds to environmental stimuli that is external or internal.
What stimuli?
FUNCTIONS OF THE NERVOUS SYSTEM
2) detects, processes and responds to environmental stimuli that is external or internal.
What stimuli?
Internal External
examples: hunger, thirst examples: loud noises, smoke
FUNCTIONS OF THE NERVOUS SYSTEM
➤ Reflex: an automatic response by the nervous system to an external stimulus
➤ reflexes protect you from injury by reducing the time it takes to react to harmful stimuli.
MAJOR ORGANS OF THE NERVOUS SYSTEM
1. Brain
2. Spinal Cord
3. Nerves
Sensory organs
4. eyes
5. nose
6. ears
7. skin
8. tongue
CNS PNS
Central Nervous System Peripheral Nervous System
Sort the major organs into CNS and PNS: brain, spinal cord, nerves, eyes, ears, nose, tongue, skin
brain
spinal cord
nerves to and from:
eyes, ears
nose, tongue
skin
organs
ORGANIZATION OF THE NERVOUS SYSTEM
CNS PNS
Central Nervous System Peripheral Nervous System
Sort the major organs into CNS and PNS: brain, spinal cord, nerves, eyes, ears, nose, tongue, skin
brain
spinal cord
nerves to and from:
eyes, ears
nose, tongue
skin
organs
COORDINATE
control of muscles and glands, homeostasis, and
mental activity.
COMMUNICATE
sends and receives messages from CNS
ORGANIZATION OF THE NERVOUS SYSTEM
CNS PNS
Central Nervous System Peripheral Nervous System
Sort the major organs into CNS and PNS: brain, spinal cord, nerves, eyes, ears, nose, tongue, skin
COORDINATE
control of muscles and glands, homeostasis,
COMMUNICATE
VIA Brain and Spinal Cord
VIA 2 PATHWAYS 1) Somatic Nervous System 2) Autonomic Nervous System
ORGANIZATION OF THE NERVOUS SYSTEM
CNS
Central Nervous System Peripheral Nervous System
brain
spinal cord
BUT REMEMBER THEY ARE ALL CONNECTED!
ORGANIZATION OF THE NERVOUS SYSTEM
➤ 2 “Pathways” of the Peripheral Nervous System
1. Autonomic Nervous system: involuntary
2. Somatic nervous system: voluntary
Organize these responses into involuntary and voluntary:
Breathing Patellar Reflex Running in Soccer
Dancing Heart pumping blood
MAJOR TISSUES OF THE NERVOUS SYSTEM
http://histology.medicine.umich.edu/full-slide-list
http://virtualslides.med.umich.edu/Histology/Central%20Nervous%20System/066a_HISTO_40X.svs/view.apml?listview=1&
http://virtualslides.med.umich.edu/Histology/Central%20Nervous%20System/077_HISTO_20X.svs/view.apml?cwidth=784&cheight=1049&chost=virtualslides.med.umich.edu&csis=1&X=0&Y=0&zoom=4.09417768499188&listview=1
MAJOR TISSUES OF THE NERVOUS SYSTEM
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MAJOR TISSUES OF THE NERVOUS SYSTEM
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MAJOR TISSUES OF THE NERVOUS SYSTEM
MAJOR TISSUES OF THE NERVOUS SYSTEM
➤ 1) White matter: allows messages to pass quickly between grey matter
➤ 2) Grey matter: muscle control, sensory perception
➤ 3) Nerves: bundle of axons in the PNS
➤ 4) Ganglia: nerve cell cluster that sends information from the P.N.S. back to C.N.S.
SUMMARY TIME
➤ With your desk partner:
➤ Write BOTH of your names on the exit slip
➤ Write your class number on the exit slip
➤ Hand in the exit slip on the front desk
QUESTIONS
1. What are the two functions of the Nervous System?
2. What are the 8 major organs that make up the nervous system?
3. What are the four tissues that make up the organs of the nervous system?
CELLS OF THE NERVOUS SYSTEM
➤ Neurons
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CELLS OF THE NERVOUS SYSTEM
➤ Axons: send messages
➤ Dendrites: receive messages
-controls all other systems
-homeostasis
MEDICAL APPLICATIONS
➤ Disease is caused by:
➤ genes
➤ environment (injury, exposure)
➤ examples?
