7.1 Tissues and Organs of the Skeletal System

1			Functions of the skeletal system include all of the following except
			A)	acid-base balance.
			B)	blood cell production.
			C)	produce hormones which regulate blood glucose.
			D)	hemopoiesis.
			E)	regulation of certain electrolytes.
2			The skull bones are classified as ________________ bones.
			A)	long
			B)	irregular
			C)	short
			D)	flat
3			A bone that is cuboidal in shape is a ________________ bone.
			A)	long
			B)	short
			C)	flat
			D)	irregular

7.2 Histology of Osseous Tissue

4			Which of the following is a mature bone cell that appears to be responsible for the overall supervision of bone maintenance?
			A)	osteogenic cells
			B)	osteoblasts
			C)	osteocytes
			D)	endosteum cells
			E)	osteoclasts
5			The basic structural unit of compact bone is termed ________________.
			A)	lamellae
			B)	periosteum
			C)	endosteum
			D)	osteon
			E)	canaliculi
6			Which large multinucleate cells found in bones secrete enzymes to reabsorb matrix?
			A)	osteoclasts
			B)	osteocytes
			C)	osteoblasts
			D)	osteoprogenitors
			E)	chondrocytes
7			Immature bone cells that are largely responsible for building boney matrix are called ________________.
			A)	osteoclasts
			B)	osteocytes
			C)	osteoblasts
			D)	osteoprogenitors
			E)	chondrocytes
8			Blood cells develop in which region of a bone?
			A)	epiphysis
			B)	diaphysis
			C)	yellow marrow
			D)	red marrow
			E)	epiphyseal plate

7.3 Bone Development

9			In which of the histological zones of a developing long bone would you find osteoclasts?
			A)	zone of cell proliferation
			B)	zone of bone deposition
			C)	zone of calcified cartilage
			D)	zone of cell hypertrophy
10			Which bone develops by intramembranous ossification?
			A)	vertebrae
			B)	cranium
			C)	pelvis
			D)	humerus
			E)	femur
11			The first step in making a long bone such as the femur is
			A)	primary marrow space forms.
			B)	chondrocytes in metaphysis calcify.
			C)	chondrocytes in metaphysis hypertrophy.
			D)	hyaline cartilage model is formed.
			E)	secondary ossification.
12			In which dominant genetic condition do the chondrocytes fail to multiply?
			A)	pituitary gigantism
			B)	achondroplasia
			C)	Paget's disease
			D)	rickets
			E)	osteoporosis

7.4 Physiology of Osseous Tissue

13			Parathyroid hormone raises blood calcium concentration by all of the following except
			A)	stimulating the dissolving of bone matrix.
			B)	increasing the number of osteoclasts.
			C)	reducing calcium excretion.
			D)	inhibiting osteoblasts.
			E)	increasing vitamin D excretion.
14			All of these organs or organ systems participate in vitamin D production or activation except
			A)	the heart.
			B)	the parathyroid glands.
			C)	the skin.
			D)	the liver.
			E)	the kidneys.
15			Which vitamin normally functions as a hormone?
			A)	Vitamin A
			B)	Vitamin C
			C)	Vitamin D
			D)	Vitamin E

7.5 Bone Disorders

16			Which of the following is the adult form of rickets in which the bones become softened and deformed?
			A)	osteomyelitis
			B)	osteochondroma
			C)	osteomalacia
			D)	osteoporosis
17			Which of the following types of fractures is a bone broken into three or more pieces?
			A)	spiral
			B)	comminuted
			C)	impacted
			D)	greenstick
18			Which condition results from little exercise and lack of estrogen after menopause?
			A)	osteomalacia
			B)	osteoporosis
			C)	rickets
			D)	Paget's disease
			E)	chondrosarcoma
19			Which type of fracture is common in young adults active in sports?
			A)	greenstick
			B)	Colles
			C)	Pott
			D)	callus
			E)	avulsion
20			Which of the following is not one of the steps of bone fracture healing?
			A)	hematoma formation
			B)	formation of granulation tissue
			C)	callus formation
			D)	remodeling
			E)	All of the above are stages in fracture healing.