Ascending tracts
a. relay messages from the spinal cord to efferent neuron cell bodies
b. carry impulses from nerves to the CNS
c. carry impulses from the CNS to nerves
d. are part of the peripheral nervous system
e. transmit signals from afferent neurons to the brain
E
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All of the following are components of ECF except
A) cerebrospinal fluid. B) peritoneal fluid. C) lymph. D) aqueous humor. E) RBCs.
In the diagram, which region includes B cells, plasma cells and macrophages?
a) B b) C c) D d) E e) None of these choices
________ occurs when carbon dioxide is eliminated faster than it is produced.
Fill in the blank(s) with the appropriate word(s).
Match each step in urine formation to its description.
1. movement from the nephron lumen to the external environment 2. movement from the nephron lumen to the blood 3. movement from the glomerulus to the nephron lumen 4. movement from the peritubular capillaries to the nephron lumen A. excretion B. filtration C. reabsorption D. secretion