You drop your cell phone. You lean forward to pick it up, using your abdominal muscles to pull your torso closer to the ground. This movement is extension of the back.
Answer the following statement true (T) or false (F)
False
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The study of tissue structure and function is called ________.
Fill in the blank(s) with the appropriate word(s).
Explain why the voltage -gated Na+ channels can close while the cell is depolarized even though the depolarization was the initial stimulus for the channel opening. Include a discussion on refractory periods and explain why action potentials travel in only one direction.
What will be an ideal response?
Which of the following processes occurs during the inflammation phase of the healing process?
A. The immune system releases histamines, which cause vasodilation and increased capillary permeability, resulting in local redness and swelling. B. White blood cells are forced away from the injury site, thus allowing an increase in the flow of red blood cells, resulting in increased blood flow. C. The blood vessels in and around the injury site constrict, which forces bacteria and other microorganisms away, thus preventing significant infection. D. The veins and arteries at the injury site constrict and platelets aggregate, which stops bleeding and causes a temporary increase in the size of the wound.
In a _______ joint or ellipsoidal joint, the convex oval-shaped projection of one bone fits into the oval-shaped depression of another bone.
Fill in the blank(s) with the appropriate word(s).