Multiple Choice
Which of the following effectors (marked C in the figure) are activated in response to decreases in blood calcium concentrations? 
A) parathyroid gland cells and intestinal epithelial cells
B) osteoclasts and kidney cells
C) thyroid gland cells and skin epithelial cells
D) osteoblasts and osteoclasts
E) hypothalamic neurons and pituitary gland cells
Correct Answer:
Verified
Correct Answer:
Verified
Q54: The adult vertebral column typically contains<br>A)32 vertebrae<br>B)30
Q55: The adult human skeleton typically consists of<br>A)230
Q56: Which of the labeled bones in the
Q57: Which of the following is a cranial
Q58: All of the following are structural features
Q60: A thin layer of hyaline cartilage covering
Q61: What is the difference between the coccyx
Q62: With reference to the negative feedback system
Q63: Which is not part of the axial
Q64: The facial bones that are commonly called