Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/19

Click to flip

19 Cards in this Set

  • Front
  • Back
Osteoblasts
Bone-forming cells that arise from osteogenic cells, deposit bone matrix, and eventually become osteocytes.
Bone
A calcified connective tissue; also called osseous tissue.
Calcification
The hardening of a tissue due to the deposition of calcium salts.
Ligand
A chemical that binds to a receptor site on a protein, such as a neurotransmitter that binds to a membrane receptor or a substrate that binds to an enzyme.
Hypercalcemia
An excess of calcium ions in the blood.
Ossification
Bone formation.
Long Bone
A bone such as the femur or humerus that is markedly longer than it is wide and that generally serves as a lever.
Ligament
A band of tough collagenous tissue joining one bone to another.
Osteoclasts
Macrophages of the bone surface that dissolve the matrix and return minerals to the extracellular fluid.
Osteoporosis
A degenerative bone disease characterized by a loss of bone mass, increasing susceptibility to spontaneous fractures, and sometimes deformity of the vertebral column; causes include aging, estrogen hyposecretion, and insufficient weight-bearing exercise.
Canaliculus
A microscopic canal, as in osseous tissue.
Epiphysis
The head of a long bone.
Parathyroid Glands
Small endocrine glands, usually four in number, adhering to the posterior side of the thyroid gland.
Epiphyseal Plate
A plate of hyaline cartilage between the epiphysis and diaphysis of a long bone in a child or adolescent, serving as a growth zone for bone elongation.
Tetanus
A state of sustained muscle contraction produced by temporal summation as a normal part of contraction; also called tetany.
Parathyroid Hormone
A hormone secreted by the parathyroid glands that raises blood calcium concentration by stimulating bone resorption by osteoclasts, promoting intestinal absorption of calcium, and inhibiting urinary excretion of calcium.
Hypocalcemia
A deficiency of calcium ions in the blood.
Diaphysis
The shaft of a long bone.
Calcitonin
A hormone secreted by C cells of the thyroid gland that promotes calcium deposition in the skeleton and lowers blood calcium concentration.