Module 4
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Osteoblast | A bone-forming cell
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| Osteocyte | A mature bone cell surrounded by bone matrix
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| Osteoclast | A large, multinucleated cell that breaks down bone
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| Hematoma | A localized mass of blood that is confined to an organ or some definable space
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| Callus | A mass of tissue that connects the ends of a broken bone
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| Anatomical position | The position acquired when one stands erect with the feet facing forward, the upper limbs hanging at the sides, and the palms facing forward with the thumbs to the outside
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| A bone cell completely surrounded by bone matrix is this kind of bone cell: | osteocyte
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| A bone cell has more than one nucleus is this kind of bone cell: | osteoclast
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| These are the two principal agents in bone matrix: | collagen and hydroxyapatite
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| This gives bones some flexibility and tensile strength | collagen
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| This gives bones their hardness | hydroxyapatite
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| If bone tissue under a microscope shows no osteons, is it compact or cancellous bone tissue? | cancellous
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| Cancellous bone tissue is made of this | trabeculae
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| This is found in the spaces between trabeculae | red bone marrow
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| Osteons are made of layers of tissue that form cylinders, which are called this: | concentric lamellae
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| This is the term for the layers of tissue between osteons | interstitial lamellae
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| Extensions of osteocytes which allow the cells in bone tissue to communicate with one another | canaliculi
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| All new bone tissue is cancellous bone. Some new bone tissue must be compact bone, so cancellous bone tissue often needs to be remodeled into this: | compact bone tissue
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| Bones increase and decrease in mass based on the stress they experience, so bones are constantly remodeled so they can: | meet the changing demands that you place on them
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| Bone is constantly _____________________ in order to reshape the bone as needed | remodeled
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| Bone is remodeled to ________________ broken bones | repair
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| Bone is remodeled to __________________ worn collagen or hydroxyapatite | replace
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| Bone is remodeled to regulate _________________ levels in your body | calcium
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| Bone growth occurs when new cartilage is added to the bone's epiphyseal plate. Why doesn't the epiphyseal plate get thicker as the bone grows? | Cartilage is ossified at the same rate in which it is aded.
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| Bone growth occurs when new cartilage is added to the bone's epiphyseal plate. As a result, the _______________ gets bigger, but the epiphyseal plate does not. | diaphysis
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| What is the term for the kind of bone growth that can occur once the epiphyseal plate is ossified? | appositional bone growth
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| What is appositional bone growth? | Bone growth that makes the bone thicker, not longer.
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| The purpose of the ______________ __________________ is to help hold the broken pieces of bone together. | external callus
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| The purpose of the ______________ ________________ is to ossify to become the new bone tissue. | internal callus
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| Calcitonin is secreted by the _______________ gland | thyroid
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| PTH is secreted by the _________________ gland | parathyroid
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| ___________________ decreases osteoclast activity | calcitonin
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| ___________________ increases osteoclast activity | PTH
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| What gland secretes human growth hormone (HGH)? | anterior pituitary gland
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| This stimulates bone growth by increasing osteoblast activity | HGH
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| The sex hormones increase _______________ activity, which first stimulates bone growth. | osteoblast
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| Sex hormones stimulate _______________of the epiphyseal plates, which eventually halts bone growth (in length). | ossification
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| Which type of joint is associated with most of the movement of the skeleton? | synovial
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| The three major types of joints in the body are fibrous joints, _______________ joints, and synovial joints. | cartilaginous
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| ________________ _____________________ cushions the ends of the bones with a "hard plastic" finish, which makes the bones rub against each other more smoothly and with no bone damage. | articular cartilage
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| ______________ _________________ lubricates the joint, making motion in the joint much easier than it would otherwise be. | synovial fluid
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| The _________________ ___________________ produces synovial fluid. | synovial membrane
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| ______________________ are extensions from osteobytes that allow for communication with each other | canaliculi
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| What two types of joint in the body provide for little or no range of motion? | fibrous joints and cartilagionous joints
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| Which type of synovial joint offers the greatest range of motion? | ball and socket joint
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| Which type of synovial joint offers the smallest range of motion? | gliding joint/plane joint
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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