The concentration of ions in the chemical environment surrounding the neurons must be tightly regulated for neurons to function properly. Which of the following cells is most responsible for this?
A) satellite cells
B) astrocytes
C) Schwann cells
D) oligodendrocytes
B
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Aspirin reduces a fever by inhibiting synthesis of:
a. leptin b. thyroid hormone c. CRH d. pyrogens e. prostaglandins
The specificity of an antibody for its antigen is determined by the
a. structure of the arm region of the "Y." b. structure of the tail region of the "Y." c. Fc region of the antibody. d. variability between the arm and tail region of the "Y". e. process of optimization during development.
The P wave on an electrocardiogram (ECG) represents the depolarization of cells in the __________.
What will be an ideal response?
A sarcomere is the
A. contractile thread that extends the length of the muscle fiber. B. plasma membrane of a muscle fiber. C. protein strand composed of actin or myosin. D. structural and functional unit of the skeletal muscle fiber. E. cytoplasm of a muscle fiber.