BIOLOGY-TEXT
5th Edition
ISBN: 9781260169621
Author: BROOKER
Publisher: MCG
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Chapter 50.2, Problem 1CS
Summary Introduction
To determine: Whether dopamine is considered as a neurotransmitter or hormone.
Introduction: Neurotransmitters are endogenous chemicals which are used for the transmission of a signal across a synapse. However, the chemical messengers, which are directly secreted into the bloodstream, are called hormones.
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Inhibitory post synaptic membrane potential - Data
Cl-
Cl-
Nr of GABA
inside
Max Postsynaptic
Voltage (mV)
outside
receptors
140
20
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00
140
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- 34.428
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Questions
11. What is an IPSP?
12. GABA receptors on the postsynaptic neuron function as ion channels for which
ion?
13. Based on the data collected, when is it more possible for an action potential to
occur? When the intracellular Cl- concentration in the postsynaptic neuron increases
or when the number of GABA receptors on the postsynaptic membrane increases?
14. Explain
Given the steps shown below, which of the following is the correct sequence for transmission at a
chemical synapse?
1. neurotransmitter binds with receptor
2. sodium ions rush into neuron's cytoplasm
3. action potential depolarizes the presynaptic membrane
4. ion channel opens to allow particular ion to enter cell
5. synaptic vesicles release neurotransmitter into the synaptic cleft
O 1, 2, 3, 4, 5
O 5, 1, 2, 4, 3
O 2, 3, 5, 4, 1
O4, 3, 1, 2, 5
O 3, 2, 5, 1, 4
Question B)
Chapter 50 Solutions
BIOLOGY-TEXT
Ch. 50.2 - Prob. 1CSCh. 50.3 - Prob. 1CSCh. 50.3 - Prob. 1EQCh. 50.3 - Prob. 2EQCh. 50.3 - Prob. 3EQCh. 50.4 - Prob. 1CCCh. 50.4 - Prob. 1CSCh. 50.4 - Prob. 2CCCh. 50.5 - Prob. 1CCCh. 50.5 - Prob. 2CC
Ch. 50 - Which is the defining feature of hormones? a. They...Ch. 50 - Steroid hormones are synthesized from ______blank...Ch. 50 - Prob. 3TYCh. 50 - Prob. 4TYCh. 50 - Prob. 5TYCh. 50 - Prob. 6TYCh. 50 - Which of the following pairs of hormones are...Ch. 50 - In invertebrates, molting of larvae is stimulated...Ch. 50 - Which of the following is true of the adrenal...Ch. 50 - Prob. 10TYCh. 50 - Prob. 1CQCh. 50 - Distinguish between type 1 and type 2 diabetes...Ch. 50 - Core Concept: Systems Organ systems often exert...Ch. 50 - Discuss the roles of hormones in growth and...Ch. 50 - Prob. 2COQ
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