Organs are composed of two or more tissue types.
Answer the following statement true (T) or false (F)
True
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Binding of norepinephrine (NE) to an alpha-adrenergic receptor is usually excitatory, and binding to a beta-adrenergic receptor is usually inhibitory.
Answer the following statement true (T) or false (F)
In mammalian males, the reproductive and excretory systems share the same urethra.
a. true b. false
Sally sustained damage to some autonomic ganglia. What part of the visceral reflex arc is interrupted?
A) initiation of a motor impulse in the central nervous system (CNS) B) integration C) motor response in a target cell D) sensory reception
A researcher discovered a sensory receptor that detects decreasing oxygen concentrations in the blood
According to the principles of negative feedback, it is likely that stimulation of this sensory receptor will produce which of the following types of responses? A. a decrease in heart rate B. an increase in the respiratory rate C. an increase in physical activity D. unconsciousness E. both a decrease in heart rate and an increase in the respiratory rate