Question 1

Parathyroid hormone functions in all of the following ways except

Accepted Answer

A)   stimulating osteoclast activity.
B)   increasing the rate of calcium absorption.
C)   decreasing the rate of calcium excretion.
D)   raising the level of calcium ion in the blood.
E)   inhibiting calcitonin secretion.F) None of the above
G) A) and C)

Question 2

Which of the following is not true of osteocytes?

Accepted Answer

A)   Osteocytes maintain protein and mineral content of matrix.
B)   Osteocytes take part in repair of damaged bone.
C)   Osteocytes form cytoplasmic extensions within canaliculi.
D)   Osteocytes are located within lacunae.
E)   Osteocytes have 50 or more nuclei.F) A) and C)
G) D) and E)

Question 3

The following are major steps in the process of intramembranous ossification:
1)  Clusters of osteoblasts form osteoid that becomes mineralized.
2)  Osteoblasts differentiate within mesenchymal connective tissue.
3)  Spicules of bone radiate out from the ossification centers.
4)  Mesenchymal cells aggregate.
What is the correct order for these events?

Accepted Answer

A)   4, 1, 2, 3
B)   2, 1, 3, 4
C)   4, 2, 1, 3
D)   2, 3, 1, 4
E)   3, 4, 2, 1F) A) and E)
G) A) and B)

Question 4

________ prevents damaging bone-to-bone contact within movable joints.

Accepted Answer

A)   A synovial membrane
B)   Elastic cartilage
C)   A serous membrane
D)   Articular cartilage
E)   Serous fluidF) None of the above
G) C) and D)

Question 5

RANKL or receptor activators of nuclear factor kB

Accepted Answer

A)   are receptors that bind directly to PTH.
B)   are found on the surface of osteoclasts.
C)   are molecules that cause osteoblasts to lay down bone.
D)   is a signal molecule that stimulates osteoclasts development.
E)   causes calcium to be excreted by the kidneys.F) A) and B)
G) D) and E)

Question 6

The femur can withstand ________ times the body's weight without breaking.

Accepted Answer

A)   3
B)   5 to 10
C)   8
D)   10 to 15
E)   30F) None of the above
G) All of the above

Question 7

A child with rickets often has

Accepted Answer

A)   oversized facial bones.
B)   long fingers.
C)   frequent bruises.
D)   bowed legs.
E)   inadequate muscle development.F) A) and C)
G) A) and D)

Question 8

Calcitonin does all of the following except

Accepted Answer

A)   increase bone deposition.
B)   inhibit osteoclasts.
C)   cause kidneys to excrete calcium.
D)   cause less calcitriol to be secreted.
E)   increase its level in pregnant women.F) A) and E)
G) A) and C)

Question 9

The process by which osteoblasts add layers to circumferential lamellae is

Accepted Answer

A)   appositional growth.
B)   interstitial growth.
C)   intramembranous growth.
D)   endochondral ossification.
E)   epiphyseal ossification.F) A) and C)
G) C) and D)

Question 10

Which of following is a function of the skeletal system?

Accepted Answer

A)   body support
B)   calcium homeostasis
C)   protection of internal organs
D)   blood cell production
E)   All of the answers are correct.F) A) and B)
G) B) and D)

Question 11

________ hormones stimulate osteoblasts to produce bone matrix.

Accepted Answer

A)   Sex
B)   Growth
C)   Thyroid
D)   Parathyroid
E)   PancreaticF) A) and E)
G) B) and D)

Question 12

After a fracture of the diaphysis has healed, the thickened region that results is called the

Accepted Answer

A)   epiphyseal plate.
B)   external callus.
C)   dense tuberosity.
D)   condyle.
E)   fracture facet.F) A) and E)
G) A) and B)

Question 13

Suppose that epiphyseal lines appear in a 10-year-old's long bones. Which of the following statements is, therefore, true?

Accepted Answer

A)   The epiphyseal plates have ossified and further growth in length is not possible.
B)   Administration of growth hormone will stimulate future bone growth in length.
C)   Osteoclasts will dissolve the metaphysis so length growth can continue until adulthood.
D)   More growth will occur during the teenage years as sex hormones stimulate rebuilding of growth plates.
E)   Intramembranous ossification will enable further growth in length.F) A) and E)
G) C) and D)

Question 14

Which of following is/are produced from the monocyte stem cells?

Accepted Answer

A)   osteoblasts
B)   osteoclasts
C)   osteocytes
D)   osteoprogenitor cells
E)   osteogenic cellsF) A) and D)
G) A) and B)

Question 15

Bones that are relatively long and slender, consisting of a shaft with two ends are

Accepted Answer

A)   long bones.
B)   flat bones.
C)   sesamoid bones.
D)   short bones.
E)   irregular bones.F) B) and E)
G) A) and B)

Question 16

In normal adult bones,

Accepted Answer

A)   there is no turnover of minerals.
B)   a portion of the protein and mineral content is replaced each year.
C)   osteoblast activity exceeds osteoclast activity, once bone has been formed.
D)   osteoclasts continue to be active long after osteoblast activity ceases.
E)   exercise will have no effect on bone remodeling.F) A) and E)
G) D) and E)

Question 17

In-Text Figure Based Questions
-Select the correct words for the following sentence: The (endosteum/periosteum)  covers the superficial layerof compact bone and is made up of (the fibrous and cellular layers/osteoblasts, osteoclasts, and osteocytes) . (Figure 6-10)

Accepted Answer

A)   periosteum; fibrous and cellular layers
B)   endosteum; fibrous and cellular layers
C)   periosteum; osteoblasts, osteoclasts, and osteocytes
D)   endosteum; osteoblasts, osteoclasts, and osteocytes
E)   endosteum and periosteum; osteoblasts, osteoclasts, and osteocytesF) B) and E)
G) A) and D)

Question 18

Osteoclast-activating factor does all of the following except that it

Accepted Answer

A)   is released in large amounts early in life.
B)   increases the number of osteoclasts.
C)   increases the activity of osteoclasts.
D)   produces a severe osteoporosis.
E)   is released by some cancer tumors.F) A) and E)
G) A) and D)

Question 19

Which hormone increases calcium and phosphate ion absorption by the intestines?

Accepted Answer

A)   parathyroid hormone
B)   calcitriol
C)   thyroxine
D)   calcitonin
E)   estrogenF) A) and B)
G) A) and C)

Question 20

An open or ________ fracture projects through the skin.

Accepted Answer

A)   external
B)   exposed
C)   complex
D)   compound
E)   complicatedF) C) and E)
G) C) and D)

Exam 6: Bones and Bone Structure

RANKL or receptor activators of nuclear factor kB

Correct Answer
verified

The process by which osteoblasts add layers to circumferential lamellae is

Correct Answer
verified

Calcitonin does all of the following except

Correct Answer
verified

Osteoclast-activating factor does all of the following except that it

Correct Answer
verified

After a fracture of the diaphysis has healed, the thickened region that results is called the

Correct Answer
verified

Correct Answer
verified

In normal adult bones,

Correct Answer
verified

Bones that are relatively long and slender, consisting of a shaft with two ends are

Correct Answer
verified

Which of following is/are produced from the monocyte stem cells?

Correct Answer
verified

Parathyroid hormone functions in all of the following ways except

Correct Answer
verified

Which of the following is not true of osteocytes?

Correct Answer
verified

________ hormones stimulate osteoblasts to produce bone matrix.

Correct Answer
verified

________ prevents damaging bone-to-bone contact within movable joints.

Correct Answer
verified

Suppose that epiphyseal lines appear in a 10-year-old's long bones. Which of the following statements is, therefore, true?

Correct Answer
verified

A child with rickets often has

Correct Answer
verified

Which of following is a function of the skeletal system?

Correct Answer
verified

In-Text Figure Based Questions -Select the correct words for the following sentence: The (endosteum/periosteum) covers the superficial layerof compact bone and is made up of (the fibrous and cellular layers/osteoblasts, osteoclasts, and osteocytes) . (Figure 6-10)

Correct Answer
verified

The femur can withstand ________ times the body's weight without breaking.

Correct Answer
verified

An open or ________ fracture projects through the skin.

Correct Answer
verified

Which hormone increases calcium and phosphate ion absorption by the intestines?

Correct Answer
verified

Exam 6: Bones and Bone Structure

RANKL or receptor activators of nuclear factor kB

Correct AnswerverifiedShow Answer

The process by which osteoblasts add layers to circumferential lamellae is

Correct AnswerverifiedShow Answer

Calcitonin does all of the following except

Correct AnswerverifiedShow Answer

Osteoclast-activating factor does all of the following except that it

Correct AnswerverifiedShow Answer

After a fracture of the diaphysis has healed, the thickened region that results is called the

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In normal adult bones,

Correct AnswerverifiedShow Answer

Bones that are relatively long and slender, consisting of a shaft with two ends are

Correct AnswerverifiedShow Answer

Which of following is/are produced from the monocyte stem cells?

Correct AnswerverifiedShow Answer

Parathyroid hormone functions in all of the following ways except

Correct AnswerverifiedShow Answer

Which of the following is not true of osteocytes?

Correct AnswerverifiedShow Answer

________ hormones stimulate osteoblasts to produce bone matrix.

Correct AnswerverifiedShow Answer

________ prevents damaging bone-to-bone contact within movable joints.

Correct AnswerverifiedShow Answer

Suppose that epiphyseal lines appear in a 10-year-old's long bones. Which of the following statements is, therefore, true?

Correct AnswerverifiedShow Answer

A child with rickets often has

Correct AnswerverifiedShow Answer

Which of following is a function of the skeletal system?

Correct AnswerverifiedShow Answer

In-Text Figure Based Questions -Select the correct words for the following sentence: The (endosteum/periosteum) covers the superficial layerof compact bone and is made up of (the fibrous and cellular layers/osteoblasts, osteoclasts, and osteocytes) . (Figure 6-10)

Correct AnswerverifiedShow Answer

The femur can withstand ________ times the body's weight without breaking.

Correct AnswerverifiedShow Answer

An open or ________ fracture projects through the skin.

Correct AnswerverifiedShow Answer

Which hormone increases calcium and phosphate ion absorption by the intestines?

Correct AnswerverifiedShow Answer

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