What would be the physical sign that a bone CANNOT continue longitudinal growth? …
When the cartilage is replaced with bone and the plate closes, the bone has reached its maximum length
. This is called the epiphyseal line
Which of the following statements is true bone would be more brittle?
Bone would be more brittle
with more collagen in the matrix
. Spongy bone is well adapted to accept stress in many directions, which makes it good for shock absorption.
Which of the following statements is true increasing levels of calcium?
Which of the following statements is true? Increasing levels of calcium
in the blood will trigger calcium deposition in the bone
. By 21, the width of the bones stops changing.
Which event has to proceed all others during endochondral ossification?
Osteogenic cells can differentiate into osteoclasts. Which event has to proceed all others during endochondral ossification?
A cartilage model is formed
.
What is the structural unit of a compact bone quizlet?
The structural unit of compact bone is
the osteon
, an elongated cylinder oriented parallel to the long axis of the bone.
Which aspect of long bone is responsible for the production of red blood cells?
Red bone marrow is primarily located in flat bones (such as the sternum and pelvis) and
in the epiphyses
of long bones. It is responsible for producing red blood cells, a process known as erythropoiesis.
What are 2 types of bone tissue?
There are two types of bone tissue:
compact and spongy
. The names imply that the two types differ in density, or how tightly the tissue is packed together. There are three types of cells that contribute to bone homeostasis.
What are the factors affecting calcium absorption?
The bioavailability of calcium from a food is influenced by the presence of a number of other compounds within a food. Dietary factors that influence absorption of calcium include
fat (reduces absorption)
, protein and phosphorus (both increase absorption).
Which bone would likely take the longest to heal?
A fracture of the upper arm or humerus may heal uneventfully in several weeks, while a fracture in the forearm takes much longer.
The femur, or thighbone
, is the longest and strongest bone in the body and difficult to break without major trauma.
What is the role of calcium in bone formation?
Calcium is the major component of the bone, where it is present at more than 99% as calcium-phosphate complexes, and
provides the skeleton strength and structure
, making the bone a metabolic reservoir to maintain the intra- and extra-cellular calcium pool.
Which material makes up most of the structure at a?
What material makes up most of the structure at A? The
articular cartilage
at the ends of long bones is formed from hyaline cartilage.
What is the weakest part of a developing adolescent long bone?
what does compact bone have that spongy bone does not? … What is the weakest part of a developing, adolescent long bone?
the epiphyseal plate
because of lack of calcification. Ossification of the ends of long bones ________.
Which of the following are the cells responsible for the early stages of endochondral ossification?
Endochondral ossification starts with a hyaline cartilage “template.”
Mesenchymal cells
become osteoblasts and begin forming bone around the cartilage.
What is the basic structural unit of compact bone called?
Osteon
, the chief structural unit of compact (cortical) bone, consisting of concentric bone layers called lamellae, which surround a long hollow passageway, the Haversian canal (named for Clopton Havers, a 17th-century English physician).
What is the structural unit of compact bone Group of answer choices?
The microscopic structural unit of compact bone is called
an osteon
, or Haversian system. Each osteon is composed of concentric rings of calcified matrix called lamellae (singular = lamella).
What is the functional and structural unit of compact bone?
Osteons
are structural units of compact bone. Each osteon consists of a central canal, which contains nerve filaments and one or two blood vessels, surrounded by lamellae.
