Topic 7: Bones and Skeletal System • BIO201_MH_V3 • Topic 7: Bones and Skeletal System Started on Friday, April 14, 2023, 10:44 AM

Topic 7: Bones and Skeletal System • BIO201_MH_V3 • Topic 7: Bones and Skeletal System Started on Friday, April 14, 2023, 10:44 AM State Finished Completed on Friday, April 14, 2023, 11:08 AM Time taken 23 mins 51 secs Grade 35.00 out of 35.00 (100%) Question 1 Correct 1.75 points out of 1.75 Flag question Question text Haversian systems or osteons Select one: a. are found in spongy bone tissue. b. lack concentric lamellae. c. are the basic units in compact bone tissue. d. do not contain osteocytes. e. are avascular. Question 2 Correct 1.75 points out of 1.75 Flag question Question text Some flat and irregular bones of the skull have air-filled spaces called Select one: a. epiphyseal spaces. b. medullary cavities. c. lacunae. d. sinuses. e. trabeculae. Question 3 Correct 1.75 points out of 1.75 Flag question Question text You would look for concentric lamellae Select one: a. around the central canal of an osteon. b. in between osteons. c. on the outer surface of compact bone tissues. d. as components of the cartilage. e. in the bone marrow. Question 4 Correct 1.75 points out of 1.75 Flag question Question text Which of the following statements regarding calcium homeostasis is true? Select one: a. Parathyroid hormone inhibits osteoclast activity. b. When blood calcium levels are too low, osteoclast activity increases. c. Increased osteoblast activity increases blood calcium levels. d. Parathyroid hormone increases calcium loss from the kidney. e. Calcitonin elevates blood calcium levels. Question 5 Correct 1.75 points out of 1.75 Flag question Question text The compression (weight-bearing) strength of bone matrix is due to the presence of Select one: a. elastin fibers. b. collagenase. c. hydroxyapatite crystals. d. collagen fibers. e. bone marrow. Question 6 Correct 1.75 points out of 1.75 Flag question Question text A band of connective tissue that attaches a muscle to a bone is a(n) Select one: a. aponeurosis. b. ligament. c. bursa. d. epimysium. e. tendon. Question 7 Correct 1.75 points out of 1.75 Flag question Question text A connective tissue sheath around cartilage is the Select one: a. endosteum. b. perichondrium. c. periosteum. d. epiphyseal line. e. ligament. Question 8 Correct 1.75 points out of 1.75 Flag question Question text Which type of bone cells lie in lacunae? Select one: a. osteochondral progenitor cell b. osteoblasts c. osteocytes d. osteoclasts Question 9 Correct 1.75 points out of 1.75 Flag question Question text Calcitonin Select one: a. decreases osteoblast activity. b. decreases osteocyte activity. c. decreases osteochondral progenitor cell activity. d. is associated with decreased osteoclast activity. e. has no effect on bone cells. Question 10 Correct 1.75 points out of 1.75 Flag question Question text The spaces between developing skull bones that have not ossified are called Select one: a. epiphyseal plates. b. articular cartilages. c. fontanels. d. bone collars. e. medullary cavities. Question 11 Correct 1.75 points out of 1.75 Flag question Question text Dr. Jagasia informs a patient they have fractured the most anterior part of their vertebra. Which part is most likely affected? Select one: a. body b. lamina c. spinous process d. transverse process e. vertebral arch Question 12 Correct 1.75 points out of 1.75