Essentials Of Pathophysiology Concepts of Altered States 4th Edition By Porth
Essentials Of Pathophysiology Concepts of Altered States 4th Edition By Porth
$2.99
Chapter 42- Structure and Function of the Skeletal System
Complete Chapter Questions With Answers
Sample Questions Are Posted Below
| 1. | A gymnastics student lands awkwardly and hurts her ankle. After MRI scan, it was revealed that she has a torn cartilage. The health care worker states it may take up to 3 to 4 months for this injury to heal. The basic physiologic reason behind the prolonged recovery is due to the fact that cartilage is/has primarily: | |
| A) | The main secretor of an extracellular matrix | |
| B) | Avascular | |
| C) | Low tensile strength | |
| D) | Lacking minerals | |
| Ans: | B | |
| Feedback: | ||
| Cartilage is avascular tissue, a fact that stands in contrast to bone tissue. Both bone and cartilage contain cells that secrete an extracellular matrix, which forms the structure of the tissue. Cartilage is more flexible than bone, but it also exhibits considerable tensile strength. Cartilage repair is a particularly slow process and may in fact not occur in some cases. In contrast to cartilage, the extracellular matrix of bone is mineralized, producing a hard tissue capable of providing support for the body and protection for its vital structures. | ||
| 2. | Hyaline cartilage is a firm but flexible type of connective tissue that is essential for: | |
| A) | Calcium salt storage | |
| B) | Growth of long bones | |
| C) | Bone surface perfusion | |
| D) | Reduced friction on tendons | |
| Ans: | B | |
| Feedback: | ||
| Hyaline cartilage is essential for growth before and after birth. As long bones grow in length, the deeper layers of cartilage cells in the growth plate multiply and enlarge, pushing the articular cartilage farther away from the metaphysis and diaphysis. Because cartilage has no blood vessels, this tissue fluid allows diffusion with blood vessels outside the cartilage. Cartilage dies if it becomes calcified. Bursae are located near joints and contain synovial fluid; their purpose is to prevent friction on a tendon. | ||
| 3. | When discussing the interior quality of bones, the science instructor mentions that spongy bone has which of the following unique qualities? Select all that apply. | |
| A) | Rigidity | |
| B) | Thickness | |
| C) | A growth plate | |
| D) | Tensile strength | |
| E) | Weight-bearing properties | |
| Ans: | D, E | |
| Feedback: | ||
| Cancellous (spongy) bone is relatively light and composed of trabeculae of bone that form a lattice-like pattern. Its structure is such that it has considerable tensile strength and weight-bearing properties. Compact (cortical) bone forms the outer shell of a bone and has a densely packed calcified matrix that makes it more rigid than cancellous bone, without excessive thickness. Although the cancellous bone contains osteocytes to maintain the bony matrix, active bone growth occurs at the epiphyseal growth plate. | ||
| 4. | When describing the covering on bones to the students, the instructor asks, “Why is periosteum an important part of the bone covering?” The student responses should mention which of the following? It: | |
| A) | Is composed of a single layer of osteoprogenitor cells | |
| B) | Is the site of red blood cell development | |
| C) | Supplies yellow bone marrow to assist with adipose cell production | |
| D) | Contains blood vessels that assist with providing nutrition to bone tissue | |
| Ans: | D | |
| Feedback: | ||
| Bones are covered, except at their articular ends, by a periosteum membrane. The periosteum contains blood vessels and acts as an anchorage point for blood vessels as they enter and leave the bone. The endosteum is the membrane that is considerably thinner than the periosteum and is composed of a single layer of flattened osteoprogenitor cells and small amounts of connective tissue. Red bone marrow contains developing red blood cells and is the site of blood cell formation. Yellow bone marrow is composed largely of adipose cells. At birth, nearly all of the marrow is red and hematopoietically active. | ||
Original price was: $25.00.$15.00Current price is: $15.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $200.00.$150.00Current price is: $150.00.
Original price was: $80.00.$60.00Current price is: $60.00.
