Hematopoiesis refers to the formation of blood cells within the red marrow cavities of certain bones. |
TRUE |
Compact bone is replaced more often than spongy bone. |
FALSE |
Bones are classified by whether they are weight bearing or protective in function. |
FALSE |
The periosteum is a tissue that serves only to protect the bone because it is not supplied with nerves or blood vessels. |
FALSE |
Short, irregular, and flat bones have large marrow cavities in order to keep the weight of the bones light. |
FALSE |
In newborn infants, the medullary cavity and all areas of spongy bone contain yellow bone marrow. |
FALSE |
The structural unit of compact bone (osteon) resembles the growth rings of a tree trunk. |
TRUE |
The term osteoid refers to the organic part of the matrix of compact bones. |
TRUE |
Sixty-five percent of the mass of bone is a compound called hydroxyapatite. |
TRUE |
All bones formed by intramembranous ossification are irregular bones. |
FALSE |
An osteon contains osteocytes, lamellae, and a central canal, and is found in compact bone only. |
TRUE |
The trabeculae of spongy bone are oriented toward lines of stress. |
TRUE |
Bone tissue in the skeleton of a human fetus is completely formed at six months’ gestation. |
FALSE |
Each consecutive bone lamella has collagen fibers that wrap in alternating directions. |
TRUE |
Cartilage has a flexible matrix that can accommodate mitosis of chondrocytes. |
TRUE |
Closure of the epiphyseal plate stops all bone growth. |
FALSE |
The structure of bone tissue suits the function. Which of the following bone tissues is adapted to support weight and withstand tension stress? |
C) compact bone |
Yellow bone marrow contains a large percentage of ________. |
A) fat |
The cell responsible for secreting the matrix of bone is the ________. |
B) osteoblast |
What kind of tissue is the forerunner of long bones in the embryo? |
D) hyaline cartilage |
What can a deficiency of growth hormone during bone formation cause? |
C) decreased proliferation of the epiphyseal plate cartilage |
A fracture in the shaft of a bone would be a break in the ________. |
C) diaphysis |
The term diploë refers to the ________. |
C) internal layer of spongy bone in flat bones |
Which of the following is a bone marking name that indicates a projection that helps to form joints? |
B) ramus |
Factors in preventing (or delaying) osteoporosis include ________. |
A) drinking fluoridated water |
Ossification of the ends of long bones ________. |
C) is produced by secondary ossification centers |
Which structure allows the diaphysis of the bone to increase in length until early childhood, as well as shaping the articular surfaces? |
C) epiphyseal plate |
The most abundant skeletal cartilage type is ________. |
A) hyaline |
Which of the following is not a function of the skeletal system? |
D) communication |
What is the structural unit of compact bone? |
D) the osteon |
Bones are covered and lined by a protective tissue called periosteum. The inner (osteogenic) layer consists primarily of ________. |
C) osteoblasts and osteoclasts |
The periosteum is secured to the underlying bone by dense connective tissue called ________. |
C) perforating (Sharpey’s) fibers |
The canal that runs through the core of each osteon (the Haversian canal) is the site of ________. |
D) blood vessels and nerve fibers |
What are the small spaces in bone tissue that are holes in which osteocytes live called? |
A) lacunae |
For intramembranous ossification to take place, which of the following is necessary? |
B) An ossification center forms in the fibrous connective tissue. |
The process of bones increasing in width is known as ________. |
C) appositional growth |
21) Bones are constantly undergoing resorption for various reasons. Which of the following cells accomplishes this process? |
A) osteoclast |
Which hormone increases osteoclast activity to release more calcium ions into the bloodstream? |
C) parathyroid hormone |
The universal loss of mass seen in the skeleton, which begins about the age of 40, ________. |
C) reflects incomplete osteon formation and mineralization |
Wolff’s law is concerned with ________. |
B) the thickness and shape of a bone being dependent on stresses placed upon it |
Cranial bones develop ________. |
B) within fibrous membranes |
Which of the following glands or organs produces hormones that tend to decrease blood calcium levels? |
B) thyroid |
Osteomyelitis is ________. |
C) due to pus-forming bacteria |
Cartilage grows in two ways, appositional and interstitial. What is appositional growth? |
B) the secretion of new matrix against the external face of existing cartilage |
Which of the following statements best describes interstitial growth? |
D) Chondrocytes in the lacunae divide and secrete matrix, allowing the cartilage to grow from within. |
In the epiphyseal plate, cartilage grows ________. |
B) by pushing the epiphysis away from the diaphysis |
Spongy bones are made up of a framework called ________. |
C) trabeculae |
Osteogenesis is the process of ________. |
C) bone formation |
Lengthwise, long bone growth during infancy and youth is exclusively through ________. |
A) interstitial growth of the epiphyseal plates |
Growth of bones is controlled by a symphony of hormones. Which hormone is important for bone growth during infancy and childhood? |
C) growth hormone |
In some cases the epiphyseal plate of the long bones of children closes too early. What might be the cause? |
B) elevated levels of sex hormones |
Normal bone formation and growth are dependent on the adequate intake of ________. |
A) calcium, phosphate, and vitamin D |
Ostealgia is ________. |
C) pain in a bone |
Chapter 6- Bones and Skeletal Tissue
Share This
Unfinished tasks keep piling up?
Let us complete them for you. Quickly and professionally.
Check Price