Answer the following statements true (T) or false (F)
1. The extrinsic eye muscle motor units contain only 8 to 12 muscle cells and in some cases as few as 2 or 3 muscle cells.
2. Retinal detachment always results in loss of vision.
3. The structure that allows equalization of the pressure in the middle ear with that outside the
body is the external auditory meatus.
4. The bending of light rays is called reflection.
5. The all-or-none phenomenon as applied to nerve conduction states that the whole nerve cell
must be stimulated for conduction to take place.
1. TRUE
2. FALSE
3. FALSE
4. FALSE
5. FALSE
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Hans Selye defined the "fight or flight" as the GAS, which stand for
A) greater adrenal stress. B) general associated stress. C) general adaptation to stress. D) general adaptation syndrome.
During the isovolumetric contraction phase of ventricular systole, the
A) atria are contracting and the ventricles are relaxing. B) atrioventricular valves and semilunar valves are closed. C) blood is ejected into the great vessels. D) All of the answers are correct. E) None of the answers is correct.
Specialized unicellular glands found in columnar and pseudostratified columnar epithelium that secrete mucus are called ________.
A. transitional cells B. keratin C. goblet cells D. cilia
Sylvia is suffering from severe edema (an abnormal buildup of serous fluid between tissue cells) in her arms and legs. Her physician prescribes a diuretic (a substance that will increase the volume of urine produced). Why might this help to alleviate Sylvia's problem?
What will be an ideal response?