Answer:
b) avascular
Explanation:
Blood supply is an important factor necessary for quick healing of an injury. The cartilage is <em><u>an avascular tissue</u></em>, meaning there is no blood supply to the cartilage.
The prolonged recovery of this injury is basically due to the physiological fact that the cartilage is avascular. Tissues that have blood supply heal faster when damaged, when compared to damaged cartilages lacking blood supply.
At the onset of a muscle contraction, the presence of calcium triggers the opening of the Na-K channels in the membrane. Potassium is a calcium inhibitor, so as the potassium flows out of the cell, it eventually reduces the presence of calcium. This causes the closure of the Na-K channel (negative feedback mechanism). In a hypokalemic state, the lack of sufficient K doesn't inhibit the calcium channel, and in turn doesn't properly terminate the muscle contraction at the cellular level.
Answer:
sadness
Explanation:
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