The meninx composed of a thin layer of delicate areolar connective tissue that follows every contour of the brain surface is the
A. pia mater.
B. arachnoid mater.
C. dura mater.
D. periosteal layer.
E. subdural layer.
A
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Which hormone increases osteoclast activity to release more calcium ions into the bloodstream?
A) osteoclast B) osteocyte C) osteoblast D) stem cell
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.
Muscle fiber fatigue results from ______.
A. calcium ion imbalances as ATP levels drop B. insufficient acetylcholine C. a perception by the individual that additional muscular work is not possible D. insufficient stimulus of the muscle fiber at the neuromuscular junction
Randy is participating in a strong man competition and is required to pull a yacht as far as he can. Which type of chemical process will his skeletal muscles rely on during this competition?
A. anaerobic respiration B. aerobic respiration C. both anaerobic and aerobic respiration