In this activity, the stimulus voltage used was _______.
A) suprathreshold for all of the axons
B) altered to accommodate the structural differences
C) the same for all of the axons
D) the same for all of the axons and suprathreshold for all of the axons
Answer: D) the same for all of the axons and suprathreshold for all of the axons
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Half of the fibers of each optic nerve decussate at the __________.
A. superior colliculus B. optic chiasm C. lateral geniculate nucleus of the thalamus D. optic foramen E. midbrain
In smooth muscle, most of the Ca2+ needed for muscle contraction
A. is attached to the intermediate filaments. B. is in the dense bodies. C. must be activated by myosin kinase. D. is stored in the sarcoplasmic reticulum. E. enters from extracellular fluid.
Passive movement of water and solutes from the plasma to the capsular space of kidney corpuscles is a process known as __________
Fill in the blank with correct word.
Celiac disease is caused by an allergy to gluten, a protein found naturally in some grains. The disease damages the lumen of the small intestine, specifically the villi and microvilli. Several symptoms associated with celiac disease would be
a) heartburn, excessive vomiting, and nausea. b) red blood mixed with the stools, light-headedness due to lack of hydration, and weakness. c) fever, elevated white blood cell count and loss of appetite. d) abdominal bloating and pain, chronic diarrhea due to excess unabsorbed water, and weight loss.