Following hemorrhage, vasopressin secretion increases because of increased firing of hypothalamic osmoreceptors.
Answer the following statement true (T) or false (F)
False
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Chemotaxis refers to the ability of leukocytes to squeeze through small capillary pores
Indicate whether the statement is true or false
Neurotransmitters are
a. chemical messengers used at chemical synapses. b. found in synaptic vesicles in the synaptic knob. c. released in response to elevated calcium in the axon terminal. d. able to bind to receptors on the post-synaptic cell. e. All of these.
When a single presynaptic neuron repeatedly releases neurotransmitter in a very short period of time, it results in ____________ summation in the postsynaptic neuron
Fill in the blank with correct word.
The baroreceptors in the carotid sinus and aortic arch are sensitive to which of the following?
a decrease in carbon dioxide changes in arterial pressure a decrease in oxygen levels an increase in oxygen levels