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$400 $600 $800 $200 $1000 Synapse Parts of NS The Brain Misc. Nerve Impulse Synapse Parts of NS The Brain Misc. $200 $400 $600 $800 $1000 Jeopardy round

Final Jeopardy Reflexes Final Jeopardy betting screen

Final Jeopardy Describe a reflex arc A. Receptor - generates a nerve impulse Sensory Neuron - takes message to the interneuron in the spinal cord Interneuron – makes decision & passes message to motor neuron Motor neuron - takes message away from CNS to effector muscle and/or gland Effector - receives nerve impulses & reacts; glands secrete and muscles contract. Final Jeopardy Describe a reflex arc

Direction of a nerve impulse $200 Dendrites  Cell body  Axon Single Jeopardy – Category 1 Direction of a nerve impulse

$400 Amount of depolarization required to initiate an action potential Single Jeopardy – Category 1 Explain threshold

Maintains the uneven distribution of Na+ & K+ ions $600 Sodium-potassium pump Maintains the uneven distribution of Na+ & K+ ions Single Jeopardy – Category 1

A nerve impulse jumping from node to node in myelinated fibers $800 Saltatory conduction A nerve impulse jumping from node to node in myelinated fibers Single Jeopardy – Category 1

$1000 Describe action potential 1. Depolarization: Na+ gates open & Na+ flows into axon (-65mV  +40mV) 2. Repolarization: Na+ gates close, K+ gates open & K+ flows out of the axon (+40mv  -65mV) Single Jeopardy – Category 1 Describe action potential

Small swelling at the end of axons $200 Axon bulb or synaptic knob Single Jeopardy – Category 2 Small swelling at the end of axons

$400 Calcium gates Gates that open to signal synaptic vesicles to fuse with presynaptic membrane Single Jeopardy – Category 2

Postsynaptic membrane $600 Axon Synaptic vesicle Neurotransmitter Postsynaptic membrane Dendrite Single Jeopardy – Category 2 Label

How neurotransmitters are inactivated $800 By enzymes or by reabsorption into presynaptic membrane How neurotransmitters are inactivated Single Jeopardy – Category 2

Example of an excitatory & an inhibitory neurotransmitter $1000 Excitatory: 1. Acetylcholine (ACh) 2. Adrenalin (epinephrine) 3. Noradrenalin (norepinephrine or NE) Serotonin Dopamine Inhibitory transmitters include 1. GABA 2. Glycine (an amino acid) 3. Serotonin Single Jeopardy – Category 2 Example of an excitatory & an inhibitory neurotransmitter

Bridges communication between brain & PNS $200 Spinal cord Single Jeopardy – Category 3 Bridges communication between brain & PNS

Protective membranes of CNS $400 meninges Single Jeopardy – Category 3 Protective membranes of CNS

Division of PNS that controls internal organs $600 autonomic Division of PNS that controls internal organs Single Jeopardy – Category 3

$800 Sympathetic System whose reganglionic nerve fibers are short & postganglionic nerve fibres are long Single Jeopardy – Category 3

Heart & breathing rate decreases $1000 Pupils contract Heart & breathing rate decreases Digestion increases Describe reaction of pupils, heart rate, breathing rate & digestion when affected by parasympathetic nerves Single Jeopardy – Category 3

Medulla oblongata – heart rate, breathing, BP, reflex reactions $200 Medulla oblongata – heart rate, breathing, BP, reflex reactions Name & function Single Jeopardy – Category 4

Cerebellum – balance, complex movement $400 Cerebellum – balance, complex movement Single Jeopardy – Category 4 Name & function

$600 Hypothalmus – regulates homeostasis (hunger, sleep, body temp, water balance, BP) Single Jeopardy – Category 4 Part & function

Occipital lobe - vision $800 Occipital lobe - vision Single Jeopardy – Category 4 Name & function

Parietal lobe – sensations (touch, temp., pressure, pain) $1000 Parietal lobe – sensations (touch, temp., pressure, pain) Name & function Single Jeopardy – Category 4

$200 Axon Dendrites Cell body Single Jeopardy – Category 5 Label

$400 Schwann cells Creates myelin sheath Single Jeopardy – Category 5

Exerts control over endocrine system $600 Pituitary gland Single Jeopardy – Category 5 Exerts control over endocrine system

Neurotransmitter used by the parasympathetic NS $800 Acetylcholine Single Jeopardy – Category 5 Neurotransmitter used by the parasympathetic NS

Prevents nervous impulse from travelling backwards $1000 Na+ gates close after depolarization At synapse, only axon has vesicles & only dendrite has receptors Prevents nervous impulse from travelling backwards Single Jeopardy – Category 5

The Jeopardy Champion! Goodbye screen