The K+ that enters hair cells via the mechanically-sensitive cation channels is recycled. In the cochlea, K+ eventually reaches the stria vascularis and is secreted back into the endolymph, completing the cycle

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#Id: 3709

#Unit 2. Cellular Organization

Depending on the diploid combination of thalassemic alleles, an affected individual may have any number of a chains from zero to three.

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#Id: 6641

#Unit 8. Inheritance Biology

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#Id: 1031

#Unit 5. Developmental Biology

In secondary neurulation, 

the neural tube arises from the aggregation of mesenchyme cells into a solid cord that subsequently forms cavities that coalesce to create a hollow tube.

 

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#Id: 2377

#Unit 5. Developmental Biology

Two distinct populations of neoblasts exist:

1. Sigma neoblast population 

2. Zeta neoblast population 

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#Id: 1878

#Unit 10. Ecological Principles

K1<K2/β  and K1/α>K2- The two species coexist.