Which compound we discussed is a hard, water-resistant protein?

A. neutrophils and macrophages are summoned to the area
This is an early step in the inflammatory phase to remove pathogens and debris.

B. blood fills the wound and a clot is formed
This occurs immediately after injury to stop bleeding and initiate repair.

C. granulation tissue is converted into connective tissue
This is part of the remodeling phase-the final stage-where the new tissue is matured and replaced with stronger connective tissue.

D. fibroblasts move in from surrounding connective tissue
This occurs during the proliferative phase, earlier than the final remodeling phase.

A. he could develop brittle bones
Brittle bones are more associated with osteoporosis or osteogenesis imperfecta, not primarily from vitamin D deficiency due to lack of sunlight.

B. he could develop very dense bones
Dense bones are seen in conditions like osteopetrosis, which results from defective osteoclast activity-not lack of sunlight.

C. he could develop soft, bowed bones
Lack of sunlight leads to vitamin D deficiency, impairing calcium absorption, which causes rickets in children and osteomalacia in adults, both of which involve soft, weakened bones that may bow under body weight.

D. he could develop nightmares
While isolation might impact mental health, this has no direct link to skeletal effects or bone physiology.