The tendency for physiological systems to stabilize internal conditions is called
A) self-regulation.
B) homeostasis.
C) equilibriosis.
D) hemopoiesis.
E) amplification.
B
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What is the correct sequence of steps in bone repair? 1. Cartilage in the external callus is replaced by bone. 2. A hematoma occurs. 3. An internal callus forms at the site of injury. 4. Osteoclasts and osteoblasts remodel the bone at the site of repair
A) 1, 2, 3, 4 B) 2, 1, 3, 4 C) 3, 1, 4, 2 D) 4, 2, 3, 1 E) 2, 3, 1, 4
Your study partner has concluded that a single action potential, once initiated, spreads down the length of an axon, non-decrementally; similarly, a single graded potential spreads down the length of a dendrite, but with decrement. Is she completely correct? Explain. How can the mechanism of decremental and non-decremental conduction help her sort this out? How is the process different in
myelinated vs. unmyelinated neurons? How may the dominoes analogy help her to understand signal propagation? What will be an ideal response?
Cells of the mononuclear phagocyte system include _________.
A) lymphocytes and plasma cells. B) macrophages, monocytes, neutrophils and eosinophils. C) neutrophils and eosinophils. D) macrophages and monocytes. E) macrophages, monocytes, neutrophils, eosinophils, lymphocytes and plasma cells.
After leaving the thoracic cavity and passing over the outer border of the first rib, the subclavian artery becomes the
A) radial artery. B) brachial artery. C) clavicular artery. D) axillary artery. E) ulnar artery.