What is the role of microglial cells and why are they so important in the CNS?
What will be an ideal response
In the presence of invading microbes, microglial cells become macrophages to phagocytize the microbes and neuronal debris. This protective role is important because cells of the immune system are denied access to the CNS.
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Parathyroid hormone (PTH) binds to receptors on osteoblasts.
Answer the following statement true (T) or false (F)
When the voltage of a plasma membrane shifts from +35mV towards 0 mV, the cell is ________
A) reaching the threshold B) depolarizing C) exiting the threshold D) repolarizing E) hyperpolarizing
Changes in the radius of _____ has the most impact on resistance to blood flow, because radius can be changed quickly and precisely.
A. Capillaries B. Arteries C. Arterioles D. Venules
What might happen if the papillary muscles and/or chordae tendineae stopped functioning?
What will be an ideal response?