St. George's College
Subject: 7th BIOLOGY
Class: Functions in Organisms II: Nervous System
Date: May 18th
Vocabulary Link and Learn
7th Beethoven ‐ Functions in Organisms II Name
Ariana Gabriel Andrea Abraham Giacomo Fabiana Sinead Liliam Francesca Rodrigo C. Andres Stefano Jean Pierre Diego Rodrigo H. Luis Andrea Sebastián Ivanna Camila Carlos Aarón Paola Enrique Alessandra Irma Sophia Naomi Kiara Christopher
7th Mozart‐ Functions in Organisms II Name
Nicole Luis Luciana Antonella Valeria Ch. Valeria C. Analucía Camila Franco Ramiro Sara Alicia José Luis Sergio Roberto Giancarlo Fiorella Gabriela Steffano Javier Diego Luis Fernando Sebastián Julio Sherley César Vilma Alessandra V.
Let's remember previous learned concepts...
2008 ‐ Term I ‐ Class 4 ‐ 6th Grade ‐ Science How do Muscles, Bones and Nerves work together
HOMEOSTASIS • All living things respond to their environments in order to maintain the constancy and order, the HOMEOSTASIS. • It is the maintenance of stable internal conditions in a changing environment. • One way that a cell controls homeostasis is by controlling the movement of substances across the cell membrane and through the body.
Nervous System In your notebook, make a web diagram connecting all your knowledge about the Nervous System. (10 minutes)
Nervous System The nervous system controls and coordinates our action by: • detecting changes (stimuli) inside and outside our body, • processing information (stimuli) and taking decisions from it, • initiating responses to these stimuli by coordinating the body's actions. The Nervous System has two main components: • Central Nervous System (CNS): it processes sensory information, deciding what to do and initiating a response. It is formed by the brain and spinal cord. • Peripheral Nervous System (PNS): the information is carried to the CNS by packs of nerves joined to the brain and spinal cord and taking information away. These nerves form the PNS.
Neurons • Are the basic functional units of the Nervous System. • Neurons are highly specialized cells that are able to generate and transmit nerve impulses. • Neurons transmit nerve impulses as a series of electrical signals.
Neurons use chemical substances and electrical signals.
Neurons form connections between them and with other types of cells.
Nerve Impulse and Synapsis
Cranial Nerves • A nerve is a bundle of axons providing the pathway for the transmission of nerve impulses. • The cranial nerves are designated both by name and by Roman numerals, according to the order in which they appear on the inferior surface of the brain. • Most of the nerves have both sensory and motor components. • Three of the nerves are associated with the special senses of smell, vision, hearing, and equilibrium and have only sensory fibers. • Five other nerves are primarily motor in function but do have some sensory fibers for proprioception. • The remaining four nerves consist of significant amounts of both sensory and motor fibers.
I: Olfactory II: Optic II III III: Oculomotor IV: Trochlear IV V: Trigeminal
VI VI: Abducens VII VII: Facial
VIII: Auditory VIII
IX: Glossopharyngeal IX X: Vagus XI: Accesory XI
XII XII: Hypoglossal 15
Investigation • Complement the class information by finding out the functions and nature of the cranial nerves.
K-W-L Chart What I KNOW about this topic
What I WANT to know about this topic
What I LERANED about this topic
SURVEY If you want to contribute in improving your Biology class, click in the survey link:
Google Forms Term II ‐ 7th Biology ‐ Class 1
Resources Used Slide Resource (Group)
G1 ‐ 2 Image
G1 ‐ 3 Image
G1 ‐ 4 Animation Idea
G1 ‐ 5 Animation Flash Unhealthy food
Osmosis in Solutions G1 ‐ 6 Image Animation Osmosis
http://bit.ly/16Itla McGraw Hill
G1 ‐ 10 Image
Central Nervous System National Geographic
G1 ‐ 12 Images
G1 ‐ 13 Animation Nerve Impulse
G1 ‐ 15 Image
G1 ‐ 16 Animation Cranial Nerves
G1 ‐ 17 Image
Teacher's Notes This class has been designed to cover the topics of Functions in Organisms II: Nervous System from Monday May 18th till Friday May 22nd. For further knowledge about this topic: 1. Conduct a thorough search under the topic: Nervous System on the Web, books and magazines. 2. If findings are not specific, ask your teacher for suggestions.
Objectives • • • •
Understand the systems’ functions in living organisms. Understand the Nerve Impulse. Evaluate the importance of integration of systems. Understand the function of the Cranial Nerves.
Note: All, or most, of the objectives will be covered during class time, however the student must be responsible for those objectives not covered or concluded.
Vocabulary • • • •
Neuron: Nerve: Nerve Impulse: Synapsis:
Note: Most of the vocabulary words will be covered during class time, however the student must be responsible for those words not covered or concluded.
Link and Learn You can visit the following websites to improve your understanding on the present topic: • • • •
http://www.med.yale.edu/caim/cnerves/index.html http://science‐learning2009.wikispaces.com http://learningandscience.blogspot.com http://libraryatstgeorge.blogspot.com
Gerardo LAZARO Science Lead Teacher Email: firstname.lastname@example.org Wiki: http://science‐learning.wikispaces.com Blog: http://learningandscience.blogspot.com Twitter: http://twitter.com/glazaro