Biology Study Guide
II. BIOLOGY AND BEHAVIOR
Objective II.1
Identify the basic components of the neuron.
Key Terms
neuron dendrites axon cell body (soma)
Exercises
1. What is a neuron? Neurons are individual cells in the nervous system that receive, integrate, and transmit information
2. Label each part of the neuron. 1.Soma 2.Dendrites 3.Myelin sheath 4.Axon
[pic]
Objective II.2
Define action potential, and explain the processes that occur when a neuron is activated.
Key Terms
action potential resting potential
Exercises
1. Number the events in the action potential in the order in which they occur. __1___ Positively charged ions flow out of the neuron. __4___ Positively charged ions flow into the neuron. __2___ The cell membrane potential is positive. __3___ The cell membrane potential is negative.
2. What is the "all or none" law? The muscle or nerves response completely or not at all
Objective II.3
Identify the basic components of the synapse.
Key Terms
synapse
Exercises
1. Which statement about the synapse is false? A a. The synapse is the place where the dendrites of one neuron link up with the axon of another. b. One neuron can form synapses with many others. c. Synapses are filled with fluid. d. Communication between neurons takes place at the synapse.
Objective II.4
Explain how neurotransmitters affect behavior, and identify the major neurotransmitters.
Key Terms
neurotransmitters acetylcholine dopamine serotonin norepinephrine endorphins
Exercises
1. Which of the following statements about neurotransmitters is false? B a. Neurotransmitters allow impulses to flow from one neuron to another. b. Neurotransmitters prevent impulses from flowing from one neuron to
Objective II.1
Identify the basic components of the neuron.
Key Terms
neuron dendrites axon cell body (soma)
Exercises
1. What is a neuron? Neurons are individual cells in the nervous system that receive, integrate, and transmit information
2. Label each part of the neuron. 1.Soma 2.Dendrites 3.Myelin sheath 4.Axon
[pic]
Objective II.2
Define action potential, and explain the processes that occur when a neuron is activated.
Key Terms
action potential resting potential
Exercises
1. Number the events in the action potential in the order in which they occur. __1___ Positively charged ions flow out of the neuron. __4___ Positively charged ions flow into the neuron. __2___ The cell membrane potential is positive. __3___ The cell membrane potential is negative.
2. What is the "all or none" law? The muscle or nerves response completely or not at all
Objective II.3
Identify the basic components of the synapse.
Key Terms
synapse
Exercises
1. Which statement about the synapse is false? A a. The synapse is the place where the dendrites of one neuron link up with the axon of another. b. One neuron can form synapses with many others. c. Synapses are filled with fluid. d. Communication between neurons takes place at the synapse.
Objective II.4
Explain how neurotransmitters affect behavior, and identify the major neurotransmitters.
Key Terms
neurotransmitters acetylcholine dopamine serotonin norepinephrine endorphins
Exercises
1. Which of the following statements about neurotransmitters is false? B a. Neurotransmitters allow impulses to flow from one neuron to another. b. Neurotransmitters prevent impulses from flowing from one neuron to