January 31, 2011
The Nervous System
Organization of the Nervous System January 31, 2011
Nerves & Neurons
Nerves & Neurons January 31, 2011
Nerves & Neurons
A nerve is a bundle of many neurons
Nerves & Neurons January 31, 2011
Structure of a myelinated Neuron
Create-Your-Own Neuron
· Using the Playdough, create two synapsing neurons · Be sure to include the following structures: · Cell Body · Dendrites · Axon · Axon Terminal · Myelin January 31, 2011
A Resting Neuron: -70mV
Sodium Potassium Exchange Pump (Animation) http://www.mcgrawhill.ca/school/applets/abbio/ch11/sodium- potassium2_sodiu.swf
Neuron Action Potential
Voltage Gated Ion Channels (Animation)
http://www.mcgrawhill.ca/school/applets/abbio/ch11/voltagegated_voltage_ga.swf January 31, 2011
Complete Action Potential w/ Threshold
Action Potential Propagation (Animation)
Action Potential & Electrical Signaling (Animation)
Saltatory Conduction (Animation)
Crossing Synapses
Synapse (Animation) January 31, 2011
Neuromuscular Junction
Neuromuscular Junction (animation)
Excitatory & Inhibitory Neurotransmitters January 31, 2011
Lethal Injection / Euthanasia
How does it work?
· Sodium thiopentol is an anesthetic used to induce medical comas · · Pavulon blocks acetylcholine receptors in neuromuscular junctions (arrests breathing) · · Potassium chloride - hyperpolarizes neurons of the heart. January 31, 2011
Cocaine, Coke, Drugs, Mouse Party etc.
Prozac & Mouse Depression Party
Suppressing Pain
- Work on Practice Questions p. 10 - 11 in colouring book
Reflex Arcs
Receptors in the Skin (Animation)
Reflex Arc (Animation) January 31, 2011 Spinal Cord
1 Which type of neuron carries impulses toward the central nervous system (CNS)?
A Sensory neuron B Motor neuron C Interneuron D Parasympathetic neuron January 31, 2011
2 Which row below identifies the first and last elements in a reflex arc?
First Element Last Element
A axon dendrite
B sensory receptor muscle (effector)
C brain gland (effector)
D motor neuron sensory neuron
3 Which of the following is incorrect?
A The central nervous system integrates and processes information sent by nerves. B The autonomic system controls digestive system secretions and the functioning of smooth and cardiac mucles. C The somatic system consists of sensory receptors, nerves that carry sensory information to the CNS. D The peripheral nervous system consists of the brain and the spinal cord. January 31, 2011
4 Which statement is incorrect?
A A patient with nerve damage at location B would be able to move her hand but would not be able to perceive the pain from the paper cut on her thumb.
B A patient with nerve damage at location C would be able to perceive the pain from a paper cut on her thumb but would not be able to move her hand. C A patient with nerve damage at location A would be able to perceive pain from the paper cut and be able to move her hand. D A patient with nerve damage at location D would be able to perceive the pain from the paper cut and be able to move her hand.
5 The following describes (in no particular order) the structures involved in the nervous system response when you touch your finger to a hot stove:
1. Motor neuron 2. Sensory receptor in the skin 3. Interneuron in the spinal cord 4. Sensory neuron 5. Skeletal muscles
The steps in the reflex described above are not in the correct order. The order in which the events would occur in a reflex arc is _____, _____, _____, _____, and )_____. January 31, 2011
Experimental Design Vocabulary:
Controls:
Manipulated Variable:
Responding Variable:
Qualitative Data:
Quantitative Data:
Lab: Reflex Responses January 31, 2011
Lab: Visual Reaction Time
The Brain January 31, 2011 The Brain
The Cerebrum January 31, 2011
6 Which part of the brain would be damaged, and what would the symptoms be?
A Frontal Lobe Impaired Judgement B Frontal Lobe Hearing loss C Temporal Lobe Reduced motor control D Temporal Lobe Hearing loss
7 Which part of the brain would most likely be damaged, and what would the symptoms be?
A Sensory Cortex Reduced pain sensitivity B Sensory Cortex Hearing loss C Motor Cortex Reduced motor control D Frontal Lobe Loss of smell January 31, 2011
8 Which part of the brain would be damaged, and what would the symptoms be?
A Parietal Lobe Vision loss B Parietal Lobe Hearing loss C Temporal Lobe Vision loss D Temporal Lobe Hearing loss
9 Which part of the brain would be most affected, and what would the symptoms be?
A Cerebellum Loss of Balance B Cerebrum Personality change C Medulla Emotional instability D Parietal Lobe Reduced touch sensitivity January 31, 2011
10 Which part of the brain would be most affected, and what would the symptoms be?
A Parietal Lobe Reduced touch sensitivity B Parietal Lobe Personality changes C Frontal Lobe Personality changes D Frontal Lobe Reduced touch sensitivity
11 Which part of the brain would be most affected, and what would the symptoms be?
A Frontal Lobe Reduced IQ
B Frontal Lobe Increased appetite C Frontal Lobe Reduced balance D Frontal Lobe Reduced touch sensitivity January 31, 2011
12 The person whose brain this belonged to would have died because their heart and lungs, and well lets face it, everything else, would have quit working after the zombie ate their brain. Which part of the brain would be most directly responsible for the stopping of the heart & lungs?
A Frontal Lobe E Hypothalamus I Medulla Oblongata B Parietal Lobe F Pituitary J Corpus C Temporal Lobe G Cerebellum Callosum D Occipital Lobe H Pons
Brain Song January 31, 2011
Autonomic Nervous System
Polygraph
Polygraph Video January 31, 2011
Optical Illusions & Sensory Adaptation
· How Stuff Works - Vision
· Michael Bach Optical Illusions January 31, 2011
Retina January 31, 2011
Hearing: Organ of Corti
Cochlea
Basilar Membrane Animation January 31, 2011 Detection of Movement Utricle & Saccule Semi-Circular Canals
Review Questions: p.432 #5, 6, 10, 12-17