Why is a neuron unable to produce an additional action potential during the absolute refractory period?
What will be an ideal response?
During the absolute refractory period, sodium ion channels may not be activated until they return to their resting states with their activation gates closed and their inactivation gates open. It is during this period that an additional action potential cannot be produced, no matter how strong the stimulus.
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Endocrine specificity is a result of ____
a. anatomic proximity b. anatomic specialization c. proximity and specialization of hormones d. receptor proximity e. receptor specialization
How do blood-pressure-lowering diuretics function?
What will be an ideal response?
The common name for the MP joints is "knuckles."
Answer the following statement true (T) or false (F)
Which hormones help maintain a relatively constant calcium concentration in the blood?
a. Melanocyte-stimulating hormone (MSH), Calcitonin, Calcitriol b. Luteinising hormone (LH), Calcitonin, Calcitriol c. Adrenocorticotrophic hormone (ACTH), Calcitonin, Calcitriol d. Parathyroid hormone (PTH), Calcitonin, Calcitriol e. none of the above