DAILY QUIZ 1 The ribs, vertebral column and sternum all belong to the skeleton o
ID: 280955 • Letter: D
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DAILY QUIZ 1 The ribs, vertebral column and sternum all belong to the skeleton ovement, axial, lower) 2. The ske eletal system is composed of a hard connective tissue called a. elastic cartilage b. osseous c. lymph d. reticular 3. Skeletal muscle attaches to bones via tendons. Because skeletal muscle contracts, pulling on bones, it allows for body (movement, axial, lower) 4. A decrease in bone density would most likely cause a. a decrease in bone strength thus decreased support and protection b an increase in protein production in bone to increase rigidity c. typically no change in bone strength or rigidity d. increase in blood cell production (hemopoiesis) limbs or 5. The appendicular skeleton includes the bones of the upper and extremities (movement, axial, lower) a. osteoblast b osteoclast c. osteoprogenitor d. osteocyte 7. The mature bone cells that are surrounded by bone matrix are the the immature bone cells depositing bony matrix are the (Collagen, osteocytes, osteoblasts) fibers and mineral crystals 8. The extracellular components of bone include (Collagen, osteocytes, osteoblasts) 9. Bones that are as wide as they are tall are typically categorized as bones cells die as they (Melanocytes, granulosum) ratin and their n get pu 6. The glands produce aExplanation / Answer
1. Axial skeleton
Explanation: Axial skeleton consists of the skull, hyoid bones, vertebral column, ribs and sternum.
Movement and lower are not the parts of classifications of skeleton. Hence, the correct answer is Axial.
2. Option b. Osseous
Explanation:
Option a. elastic cartilage consists of yellow elastic fibers in matrix and regarded as the most flexible cartilage and not related to skeletal system.
Option c. lymph refers to the clear fluid that resembles plasma which is present in lymphatic system.
Option d. reticular means network like and also not related to the skeletal system and hence not the correct answer.
Osseous or bone tissue is the dense supportive connective tissue which contains specialzed cells and produces solid matrix of calcium salt depostis around collagen fibers.
Hence option b is the correct answer.
3. movement
Explanation: Skeletal or voluntary muscles attaches to the bones via tendons and allow for body movement. Axial skeleton as seen before and the other option lower are not related to the description provided in the blank. Hence, the correct answer is movement.
4. Option a. a decrease in bone strength thus decreased support and protection.
Explanation: Reduction in bone density reduces the protein production and reduced rigidity, hence, option a is incorrect. Reduction in bone density results in osteoporosis and change in bone strength and support. Hence, option c is also incorrect. Reduction in bone density may not have a direct effect on blood cell production but, if it does, there is reduction in blood cell production but not increase. Hence, option D is also incorrect.
When bone density decreases it results in reduced bone strength, pain, more incidence of injuries, decreased support and protection. Hence, option a is the correct answer.
5. lower
Explanation: Appendicular skeleton consists of approximately 126 bones. The major four groups in the appendicular skeleton are pectoral girdle, upper limb, lower limb, pelvic girdle. Hence, the answer is lower. Movement and axial do not match the description of the blank.
6. Option b. Osteoclasts
Option a. Osteoblasts are responsible for making new bone matrix and located in periosteum and endosteum. Osteoblasts are derived from osteoprogenitor cells. Option c. osteoprogenitor cells are also present in periosteum and endoosteum. They form stem cells from osteoblast. Option d. osteocytes refers to the cells that maintain bone matrix. They are located in lacunae and originated from osteoblasts
Osteoclasts are large cells formed from multiple cells that function in the absorption or break down of bone matrix. Hence, the correct answer is option b.
7. Mature bone cells that are surrounded by bone matrix are the Osteocytes, while the immature bone cells depositing bony matrix are the osteoblasts.
8. Collagen
Extracellular matrix of bone is made up of ground substance and collagen fibers. Organic components of bone tissue are the cells, collagen fibers and ground tissue. Inorganic components are the mineral salts that invade the bony matrix making bone tissue hard. Hence, the answer is collagen. Remaining options osteocytes and osteoblasts are explained in the previous questions and do not match the description given in this question.
9. short bones
Explanation:
Different types of bones are:
Long bones ex. humerus, radius, ulna, phalanges, metacarpals, femurs, tibia, metatarsals, fibula which are long.
Short bones are carpals, tarsal, patella, calcaneus which are as wide as they are tall.
Flat bones which are skull, sternum, scapula, ribs, clavicles
Irregular bones like vertebra, ilium, ischium, pubis, bones of the pelvic girdle
10. c. epiphysis
Explanation:
Option a. diaphysis refers to the shaft of the long bone; heavy wall of a compact bone or dense bone, central space called medullary (marrow cavity)
Option b. metaphysis is where diaphysis and epiphysis meet in a long bone.
Option d. endosteum is the inner, cellular layer of periosteum
Option c. epiphysis is the wide part at each end of the long bone
Hence, option c is the correct answer
11. Endosteum
Endosteum is the cellular layer lining the medullary cavity and consists of simple layer of osteoprogenitor cells, This is active during bone growth, repair and remodelling.
Articular cartilage is the specialized tissue which is suited for withstanding large compressive joint loads and transferring that load in a non destructive manner to the bone below.
Another choice 'Short' do not match the description.
Hence, the correct answer is endosteum
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