Which structure supports the lens and controls its shape?
a. ora serrata
b. neural tunic
c. ciliary body
d. choroid
Answer: c. ciliary body
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Answer the following statements true (T) or false (F)
1. The single most important blood buffer system is the bicarbonate buffer system. 2. One of the most powerful and plentiful sources of buffers is the protein buffer system. 3. As ventilation increases and more carbon dioxide is removed from the blood, the hydrogen ion concentration of the blood decreases. 4. Regulation of the acid-base system is accomplished mainly through respiratory control, and the kidneys also play a small role. 5. Severe damage to the respiratory system rarely will result in acid-base imbalances.
What are the nourishing membranes that lie between the bony covering of the CNS and the nervous tissue?
a. vertebrae b. ganglions c. meninges d. nerve roots e. glial cells
Which is a nerve of the lumbosacral plexus?
a. Vagus nerve b. Phrenic nerve c. Axillary nerve d. Pudendal nerve
The glomerulus and the glomerular capsule form the __________.
cortical radiate arteries renal papilla renal corpuscle vasa recta