During early embryonic development, a protein called sonic hedgehog is released from a cell and travels in a small gradient through the interstitial fluid only to nearby cells. This helps to establish the path and direction of development for the nervous system and limbs. Knowing this, sonic hedgehog must be a(n) ________ signal.
A. nervous
B. endocrine
C. autocrine
D. paracrine
Answer: D
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Which carpal bone does not articulate with the radius?
A. scaphoid B. lunate C. triquetrum D. pisiform
The movement of rotating a limb outward is called ________ rotation
A) lateral B) internal C) medial D) superficial E) abductive
Colloid osmotic pressure in plasma is fairly constant in a healthy person. How would protein starvation affect this pressure? How may a very high-protein diet affect this pressure? Suppose a person is suffering from an imbalance that causes an increase in colloid osmotic pressure from the typical 25 mm Hg to 30 mm Hg. Calculate the effect on net fluid flow across the capillary. What negative
health consequences could result? What will be an ideal response?
Pernicious anemia develops from a deficiency of
a. ATP b. carbonic anhydrase c. cobalt d. erythropoietin e. intrinsic factor