topic 8 Flashcards
which is a fuction of the skeletal system?
(a) support
(b) hematopoietic site
(c) storage
(d) providing levers for muscle activity
(e) all of these
(a) support
(b) hematopoietic site
(c) storage
(d) providing levers for muscle activity
(e) all of these*
a bone with approximately the same width, length and height is most likely
(a) a long bone
(b) a short bone
(c) a flat bone
(d) an irregular bone
(a) a long bone
(b) a short bone*
(c) a flat bone
(d) an irregular bone
the shaft of a long bone is properly called the
(a) epiphysis
(b) periosteum
(c) diaphysis
(d) compact bone
(a) epiphysis
(b) periosteum
(c) diaphysis*
(d) compact bone
sites of hematopoiesis include all but
(a) red marrow cavities of spongy bone
(b) the diploe of flat bones
(c) medullary cavities in bone of infants
(d) medullary cavities in bones of a healthy adult
(a) red marrow cavities of spongy bone
(b) the diploe of flat bones
(c) medullary cavities in bone of infants
(d) medullary cavities in bones of a healthy adult*
An osteon has
(A) a central canal carrying blood vessels
(b) concentric lamellae
(C) osteocytes in lacunae
(D) canaliculi that connect lacunae to the central canal
(E) all of these
(A) a central canal carrying blood vessels
(b) concentric lamellae
(C) osteocytes in lacunae
(D) canaliculi that connect lacunae to the central canal
(E) all of these
an osteon has
(a) a central canal carrying blood vessels
(b) concentric lamellae
(c) osteocytes in lacunae
(d) canaliculi that connect lacunae to the central canal
(e) all of these
(a) a central canal carrying blood vessels
(b) concentric lamellae
(c) osteocytes in lacunae
(d) canaliculi that connect lacunae to the central canal
(e) all of these*
the organic portion of matrix is important in providing all but
(a) tensile strength
(b) hardness
(c) ability to resist stretch
(d) flexibility
(a) tensile strength
(b) hardness*
(c) ability to resist stretch
(d) flexibility
the flat bones of the skull develop from
(a) areolar tissue
(b) hyaline cartilage
(c) fibrous connective tissue
(d) compact bone
(a) areolar tissue
(b) hyaline cartilage
(c) fibrous connective tissue*
(d) compact bone
the remodeling of bone is a function of which cells?
(a) chondrocytes and osteocytes
(b) osteoblasts and osteoclasts
(c) chondroblast and osteoclasts
(d) osteoblasts and osteocytes
(a) chondrocytes and osteocytes
(b) osteoblasts and osteoclasts*
(c) chondroblast and osteoclasts
(d) osteoblasts and osteocytes
bone remodeling in adults is regulated and directed mainly by
(a) growth hormone
(b) thyroid hormone
(c) sex hormone
(d) mechanical stress
(e) PTH
(a) growth hormone
(b) thyroid hormone
(c) sex hormone
(d) mechanical stress*
(e) PTH*
where within the epiphyseal plate are the dividing cartilage cells located?
(a) nearest the shaft
(b) in the marrow cavity
(c) farthest from the shaft
(d) in the primary ossification center
(a) nearest the shaft
(b) in the marrow cavity
(c) farthest from the shaft*
(d) in the primary ossification center
Wolff’s law is concerned with
(a) calcium homeostasis of the blood
(b) the shape of a bone being determined by mechanical stresses placed on it
(c) the electrical charge on the bones surfaces
(a) calcium homeostasis of the blood
(b) the shape of a bone being determined by mechanical stresses placed on it*
(c) the electrical charge on the bones surfaces
formation of the bony callus in fracture repair is followed by
(a) hematoma formation
(b) fibrocartilaginous callus formation
(c) bone remodelling
(d) formation of granulation tissue
(a) hematoma formation
(b) fibrocartilaginous callus formation
(c) bone remodelling*
(d) formation of granulation tissue
the fracture type in which the bone ends are incompletely separated is
(a) greenstick
(b) compound
(c) simple
(d) comminuted
(e) compression
(a) greenstick*
(b) compound
(c) simple
(d) comminuted
(e) compression
the disorder in which bones are porous and thin but bone composition is normal is
(a) osteomalacia
(b) osteoporosis
(c) Paget’s disease
(a) osteomalacia
(b) osteoporosis*
(c) Paget’s disease
