ch 7 quiz questions Flashcards
a decline in bone density can lead to
osteoporosis
the result of blood calcium and phosphate levels being too low for normal deposition is a softness of the bones called ______ in children and ______ in adults
rickets
osteomalacia
the center cavity of the diaphysis of long bone is called the
marrow cavity
new bone is deposited by cells known as
osteoblasts
the process of dissolving bone and returning its minerals to the bloodstream is known as
resorption
a fracture in which the bone is broken into 3 or more pieces is called a ______ fracture
comminuted
which of the following is NOT a function of the skeleton
protecting the brain
storage of calcium and phosphate ions
protecting the spinal cord
providing support for most muscles
storage of RBCs
storage of RBCs
calcium plays an essential role in all of the following except
muscle contraction
exocytosis
DNA synthesis
communication among neurons
blood clotting
DNA synthesis
bone-forming cells are called
osteoblasts
which of the following is NOT a function of parathyroid hormone (PTH)
promote calcitriol synthesis
lower blood calcium
promote calcium reabsorption by the kidneys
stimulates osteoclast activity
inhibit osteoblast activity
lower blood calcium
