What are the two divisions of the nervous system?
The two divisions of the nervous system are the anatomical division and the functional divisions.
The anatomical division is composed of the central nervous system (CNS) and the peripheral nervous system (PNS). The central nervous system includes the cerebrum, cerebellum, brainstem, spinal cord, thalamus, subthalamus, and basal ganglia. The peripheral nervous system includes the spinal nerves, cranial nerves, and sensors.
The functional divisions of the nervous system are composed of the autonomic nervous system (ANS) and the somatic nervous system. The autonomic nervous system (involuntary component) includes the sympathetic nervous system and the parasympathetic nervous system. The somatic nervous system is the voluntary component of the nervous system.
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Serum vitamin B12 is highly unstable when exposed to light and can tolerate only a single absorbance reading before breaking down. Therefore, it is not possible to generate a standard curve for B12
When the concentration of B12 must be ascertained in a patient specimen, how should the technician go about doing so? A) Calculate the concentration of B12 directly from its absorbance in the solution using Beer's Law. B) Determine the Km and Vmax of B12 and apply those values to Ohm's Law to calculate the concentration of B12. C) Generate a standard curve using a more stable vitamin of similar chemical structure. D) Measure transmittance of B12 and create a standard curve using transmittance against concentration.
Wavelike motion of the digstive tract.
A. papillae B. mucosa C. peristalsis D. fundus