Water-soluble substances move through the blood-brain barrier by
A) active transport.
B) mediated transport.
C) diffusion.
D) None of the above.
Answer: B) mediated transport.
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Iron, lactic acid, and lipids are all considered to be nutrients in blood plasma
Indicate whether this statement is true or false.
Which of the following is NOT a function of the liver as regards glucose homeostasis?
a. secreting ketone bodies in response to excess plasma glucose levels b. storing glycogen when excess glucose is available c. releasing glucose when plasma glucose levels drop d. converting organic chemicals like amino acids into glucose via gluconeogenesis e. All of these are functions of the liver relating to glucose homeostasis.
Which of the following statements regarding sensory pathways is correct?
A. All somatic sensory information that reaches the cerebral cortex is first processed in the thalamus. B. Somatic sensory information from the left side of the body projects to the left side of the somatosensory cortex. C. All somatic sensory information travels together in a single tract in the spinal cord. D. Ascending pathways in the anterolateral column of the spinal cord carry information about fine touch discrimination. E. Ascending pathways in the dorsal column of the spinal cord carry information about pain from the back muscles.
This group of organic compounds acts as surfactants.
A. Phospholipids B. Carbohydrates C. Nucleic acids D. Prostaglandins