Which of these areas is located in the postcentral gyrus of the cerebral cortex?
A) olfactory cortex
B) visual cortex
C) primary motor cortex
D) primary somatic sensory cortex
E) primary auditory cortex
Ans: D) primary somatic sensory cortex
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Complete the Concept Map to trace the pathway of blood through the pulmonary and systemic circuits, and state the importance and functions of these circuits.
Which of the following statements is incorrect or false?
A) Haptens lack immunogenicity unless attached to protein carriers. B) Class 1 MHC molecules are built into the plasma membranes of all body cells. C) Class II MHC molecules appear only on the surface of antigen-presenting cells, thymic cells, and T cells that have been activated by exposure to antigens. D) MHC proteins are the cell’s identity markers.
As with action potentials in other types of cells, the repolarization of cardiac muscle cells involves the
A. entrance of sodium through voltage-gated channels. B. entrance of calcium through voltage-gated channels. C. binding of ACh to ACh receptor. D. exit of potassium through voltage-gated channels. E. simultaneous closure of sodium channels and opening of calcium channels.
_______________ regulation describes regulation of cellular activity by messengers from nearby cells
Fill in the blank(s) with the appropriate word(s).