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10 Cards in this Set
- Front
- Back
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Which of the following is a function of the endocrine system?
A) Generating short-lived action potentials B) Altering metabolic functions of target cells C) Initiating a graded potential D) Binding to cell surface receptors |
B) Altering metabolic functions of target cells
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Hormones are secreted:
A) Directly onto the target cell B) Into the circulatory system C) Between pre and postsynaptic neurons D) Within the extra-cellular compartment |
D) Within the extra-cellular compartment
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Which statement is false regarding hormones?
A) The circulatory system distributes hormonal secretions B) Hormonal influence is much longer and slower than the nervous system C) They are secreted by exocrine glands D) Each hormone is receptor specific |
C) They are secreted by exocrine glands
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A lipid-soluble hormone alters the activity of the target cell by:
A) Changing membrane permeability B) Binding to an intracellular receptor and initiating protein synthesis C) Turning on an inactive protein kinase D) Binding to a receptor on the cell surface |
B) Binding to an intracellular receptor and initiating protein synthesis
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Why must water-soluble hormone like epinephrine rely on a secondary messenger system?
A) Their chemistry (charge and size) will not allow for passage across cell membrane B) Because these hormones bind directly with the DNA molecule C) These hormones work best within the cell D) The activation of epinephrine occurs within the cell |
A) Their chemistry (charge and size) will not allow for passage across cell membranes
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Which of the following is a secondary messenger?
A) Protein kinase B) Adenylate cyclase C) G-Protein D) Cyclic AMP (cAMP) |
D) Cyclic AMP (cAMP)
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Which molecule is the building-block necessary for the formation of the secondary messenger?
A) Hormone receptor B) G-protein C) ATP D) Adenylate cyclase |
C) ATP
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Another name for the anterior pituitary gland is the:
A) Epithalamus B) Neurohypophysis C) Infindibulum D) Adenohypophysis |
D) Adenohypophysis
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When appropriate hormone levels are acheived, further secretions are controlled by:
A) Positive feed-back loops B) Humoral control C) Negative feed-back loops D) Neural control |
C) Negative feed-back loops
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Releasing hormones (RH) originate from:
A) Post-synaptic neurons B) Hypothalamus C) Beta cells D) Thalamus |
B) Hypothalamus
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