What is found in the central canal of the spinal cord?
A. Astrocytes
B. Oligodendrocytes
C. Blood plasma
D. Cerebrospinal fluid
E. Meningeal fluid
D. Cerebrospinal fluid
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Eyelids serve two purposes: one is to protect the eye and the other is to
A. help spread antiviral solution. B. prevent excess mucus from obscuring vision. C. help distribute lacrimal fluid to cleanse and lubricate the surface. D. help distribute blood to the eye surface. E. help to control the transmission of the nerve impulse to the retina.
Residual volume is the volume of air __________.
a. that remains in the lungs after maximal expiration b. at the end of normal respiration if expiratory muscles are actively contracted c. inspired and expired during one breath d. that can be inspired over and above resting tidal volume
The palate separates
A. the small and the large intestine. B. the oral and nasal cavities. C. the esophagus and the larynx.
The plantar surface refers to the sole of the foot.
Answer the following statement true (T) or false (F)