Bone resorption

What will be an ideal response?


Resorption is a function of osteoclasts. Dig depressions or grooves as they break down matrix. Secrete lysosomal enzymes and proteins (H+) that digest matrix. Acidity converts calcium salts to soluble forms. Osteoclasts also phagocytize demineralized matrix and dead osteocytes. Digested products are transcytosed across cell and released into interstitial fluid and then into blood. Once reabsorption is complete, osteoclasts undergo apoptosis (controlled cell death)

Biology & Microbiology

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Based on his experiences while aboard the H.M.S. Beagle, Darwin realized that ____ provided the only plausible

explanation for his observations.

a. descent with modification b. a metaphysical perfecting principle c. the principle of use and disuse d. catastrophes in ancient environments e. inheritance of acquired characteristics

Biology & Microbiology

A specific marker with two peaks indicates that the individual is ________ with respect to that particular STR marker

a. homozygous b. heterozygous

Biology & Microbiology

These skin cells fight infections: ________

A) fibroblasts B) macrophages C) melanocytes D) neuroglia

Biology & Microbiology

Which hormone, secreted by the embryo, is tested for in all pregnancy tests?

A. human chorionic gonadotropin B. follicle-stimulating hormone C. luteinizing hormone D. progesterone E. estrogen

Biology & Microbiology