In a healthy kidney, very little ________ is filtered by the glomerulus.
A. vitamins
B. electrolytes
C. protein
D. amino acids
E. glucose
Answer: C
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You and your lab partner use a living nerve and muscle preparation to study muscle contraction. When you stimulate the nerve electrically, the muscle contracts; why? When you turn off the stimulator but add a high concentration of caffeine to the fluid surrounding the tissues, the muscle contracts; why (speculate on possible sites/mechanisms of action)? When curare (which blocks neuromuscular
transmission) is added with caffeine, contraction occurs; why (speculate, and how does this alter your previous answer)? Can you identify a single site of action from this information? If not, what additional experiment would narrow your choices? What will be an ideal response?
Using the figure below, identify the labeled part.
1. Label A: ______________________________
2. Label B: ______________________________
3. Label C: ______________________________
4. Label D: ______________________________
5. Label E: ______________________________
6. Label F: ______________________________
7. Label G: ______________________________
8. Label H: ______________________________
9. Label I: ______________________________
10. Label J: ______________________________
11. Label K: ______________________________
12. Label L: ______________________________
1.3 Label M: ______________________________
14. Label N: ______________________________
15. Label O: ______________________________
16. Label P: ______________________________
17. Label Q: ______________________________
Blood pressure in arteries is higher than the blood pressure in capillaries. Blood flows from arteries to capillaries due to the presence of a:
A) homeostatic imbalance. B) positive feedback loop. C) negative feedback loop. D) pressure gradient.
Blood normally clots in approximately ________
A) 1 minute B) 3 to 6 minutes C) 5 to 10 minutes D) 15 minutes E) 30 minutes