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Homework Assignment 7 Biology 165 (Chapter 7: The Skeletal System) Name The bone

ID: 3511994 • Letter: H

Question

Homework Assignment 7 Biology 165 (Chapter 7: The Skeletal System) Name The bones of the skeletal system differ greatly in size and shape and can be classified according to their shapes. What type of bone could the tarsals be classified as? 1· (a) Sesamoid (b) Short (c) Long (d) Irregular During endochondral ossification, a ossify in the primary ossification center found in the the secondary ossification center found in the 2. model begins to and (a) Bone, Diaphysis, Epiphysis (b) Cartilage, Diaphysis, Epiphysis (c) Bone, Epiphysis, Diaphysis (d) Cartilage, Epiphysis, Diaphysis 3. are cells that add calcium to bones under the influence of the are cells that remove hormone calcium from the bones under the influence of the hormone (a) Osteoblasts, Parathyroid Hormone, Osteoclasts, Calcitonin (b) Osteoclasts, Parathyroid Hormone, Osteoblasts, Calcitonin (c) Osteoblasts, Calcitonin, Osteoclasts, Parathyroid Hormone

Explanation / Answer

1-) The bone sof skeletal system differ greatly in size and shape and can be classified according to their shapes. What type of bone could Tarsals be classified as. (b) short.

Short bones are the bones that provide stability and some movement. Carpals in wrist and Tarsals in Ankles are examples of short bone.

2-) During endochondral ossification a Cartilage model begins to ossify in the primary ossification center found in the Diaphysis and the seondary ossification center found in the Epiphysis. So answer is (b) . Endochondral ossification is the process of bone formation from a cartilage model which normally exhibits long bones.

3-) Osteoblasts are cells that adds calcium to bone and under influence of hormone Calcitonin and Osteoclasts are cells that remove calcium from the bones under influence of hormone Parathyroid. Option (c) is correct.

4-) The Frontal bone forms the anterior portion of skull and contains the glabella , the supraorbital margins and supraorbital foramen. (c) . Frontal bone is the only single bone that forms the anterior portion of skull containing slight depressions called Glabella and which forms the supraorbital margin and also contains supraorbital foramen in the middle margin.

5-) Lets say a particular bone is weak in a certain spot. What type of cell would add more calcium deposits to that region of the bone to strengthen it. (b) osteoblasts are the major cellular components of bone. They are the cells responsible for bone mineralization and calcium deposition.

6-) All of the bones listed below are part of Appendicular skeleton except (c) Manubrium . Appendicular skeleton forms the extremities of arms and legs and Axial skeleton forms the central core of the body containing Manubrium which forms part of sternum.

7-) Which statement is true about skeletal system (c) Both radius and Ulna have Styloid process.

8-) Which of the following bones below contains medial malleolus and anterior crest (a) Tibia also known as shinbone is the second largest bone after femur. It contains anterior prominent border called anterior crest which ends below as medial malleolus.

9-) Infantile skull contains membranous areas called fontanels where the bones have not ossified quite yet.(a)True. In infants skull the bone does not cover the entire skull rather there are membranous structure fontanels for support.

10-) The olecranon process of ulna fits into the coronoid fossa on the humerus.(b) False The olecranon process of ulna fits into the Olecranon fossa of humerus to form a hinge joint and prevent hyperextension.