Answer the following questions true (T) or false (F)
1. When you bend your head, gravity pulls on the otolithic membrane, bending the stereocilia either toward or away from the kinocilium.
2. Unipennate muscles have fascicles that wrap around a bone or have a twisted appearance.
3. The muscle named gluteus maximus tells us two facts: 1 ) it is located in the buttocks (gluteus), and 2 ) it is a large muscle (maximus).
1. TRUE
2. FALSE
3. TRUE
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The movement of a body part upward is called
A) extension. B) protraction. C) supination. D) elevation. E) abduction.
Draw graphs showing the effect on action potentials in a cell following effective doses of each of the listed neurotoxins. Assume that the cell is normally brought to threshold by an electrical stimulus applied to it, so that any abnormality is due to the toxin. Precise values for voltage and duration are not important, just a general trend in how the action potential may be different from normal.
1. puffer fish poison (blocks voltage -gated sodium channel activation) 2. tetraethylammonium (blocks voltage -gated potassium channels) 3. ouabain (blocks sodium-potassium pumps) 4. sea anemone toxin (blocks voltage -gated sodium channel inactivation)
Which of the following hormones does NOT influence blood pressure?
A. ADH B. Growth hormone C. Aldosterone D. Atrial natriuretic hormone E. Epinephrine
By definition, Thyroid Stimulating Hormone (TSH) is not considered a "tropic" hormone.
a. true b. false