ch.6 (mastering a&p)

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Hyaline cartilage is:

a) found in the external ear.
b) found at the ends of bones that are located at movable joints.
c) the rarest of the skeletal cartilages.
d) found between the vertebrae.

b) found at the ends of bones that are located at movable joints.

Which of the following is mismatched?

a) Flat bones: an example is the sternum
b) Short bones: examples include the vertebrae
c) Long bones: includes all limb bones except the patella, the wrist and the ankle bones
d) Sesamoid bones: form inside certain tendons

b) Short bones: examples include the vertebrae

Bones do not have a role in:

a) blood cell formation.
b) fat storage.
c) glycogen production.
d) movement.
e) mineral storage.

c) glycogen production.

Which of the following is stored in bones?

a) Glycogen
b) Vitamin C
c) Iodine
d) Phosphate

d) Phosphate

In adults, yellow marrow is located:

a) at joint surfaces.
b) in the medullary cavity of the long bones.
c) at the epiphyseal plate.
d) at the ends of the long bones.

b) in the medullary cavity of the long bones.

In adults, hematopoietic tissue is mainly found in:

a) the long bones of the leg.
b) the humerus.
c) the hip bones.
d) the wrist bones.

c) the hip bones.

Osteoblasts

form new bone

The osteon is:

a) a passageway for blood and nerves.
b) the structural unit of spongy bone.
c) the structural unit of compact bone.
d) a network of red marrow

c) the structural unit of compact bone.

The epiphyseal plate is:

a) the site of red bone marrow production.
b) where yellow marrow is produced.
c) where bone elongation occurs.
d) the long axis of a bone.

c) where bone elongation occurs.

The notable hardness of bone is attributed to:

a) the presence of collagen fibers.
b) the presence of glycoproteins.
c) the presence of proteoglycans.
d) the presence of cartilage.
e) the presence of inorganic hydroxyapatites.

e) the presence of inorganic hydroxyapatites.

What is osteoid?

a) the inorganic part of the matrix of bone
b) the outer surface of bone
c) one of the cell types found in bone
d) the organic part of the matrix of bone

d) the organic part of the matrix of bone

During infancy and childhood, the most important stimulus of epiphyseal plate activity is:

a) testosterone.
d) the thyroid hormones.
c) growth hormone.
d) estrogen.

c) growth hormone.

Which of the following refers to a bone disorder found most often in the aged and resulting in the bones becoming porous and light?

a) osteoporosis
b) rickets
c) osteomalacia
d) Paget's disease

a) osteoporosis

The most abundant skeletal cartilage type is ________.

hyaline

A bone embedded in a tendon is called a(n) ________ bone.

sesamoid

Bones are classified by whether they are weight bearing or protective in function.

T/F

false

Which of the following is not a function of the skeletal system?

a) support
b) storage of minerals
c) production of blood cells (hematopoiesis)
d) communication

d) communication

The structure of bone tissue suits the function. Which of the following bone tissues is adapted to support weight and withstand tension stress?

a) trabecular bone
b) irregular bone
c) spongy bone
d) compact bone

d) compact bone

The cell responsible for secreting the matrix of bone is the ________.

a) osteoclast
b) chondrocyte
c) osteocyte
d) osteoblast

d) osteoblast

What is the structural unit of compact bone?

a) osseous matrix
b) the osteon
c) lamellar bone
d) spongy bone

b) the osteon

The canal that runs through the core of each osteon (the Haversian canal) is the site of ________.

a) osteoclasts and osteoblasts
b) blood vessels and nerve fibers
c) yellow marrow and spicules
d) cartilage and interstitial lamellae

b) blood vessels and nerve fibers

What are the small spaces in bone tissue that are holes in which osteocytes live called?

a) trabeculae
b) lacunae
c) Haversian canals
d) Volkmann's canals

b) lacunae

Spongy bones are made up of a framework called ________.

a) trabeculae
b) osseous lamellae
c) lamellar bone
d) osteons

a) trabeculae

________ are multinucleated cells that destroy bone.

osteoclasts

The term osteoid refers to the organic part of the matrix of compact bones.

T/F

true

Which structure allows the diaphysis of the bone to increase in length until early childhood, as well as shaping the articular surfaces?

a) epiphyseal plate
b) epiphyseal line
c) lacunae
d) Haversian system

a) epiphyseal plate

Cranial bones develop ________.

a) from cartilage models
b) from a tendon
c) within fibrous membranes
d) within osseous membranes

c) within fibrous membranes

Osteogenesis is the process of ________.

bone formation

What is endochondral ossification?

a) the formation of bone from pre-existing fibrocartilage models
b) the formation of bone from pre-existing hyaline cartilage models
c) the formation of bone from pre-existing elastic cartilage models
d) the formation of bone from fibrous membranes

b) the formation of bone from pre-existing hyaline cartilage models

________ is a disease of the bone in which bone reabsorption outpaces bone deposit, leaving the person with thin and often very fragile bones.

osteoporosis

Which hormone increases osteoclast activity to release more calcium ions into the bloodstream?

a) calcitonin
b) estrogen
c) parathyroid hormone
d) thyroxine

c) parathyroid hormone

Wolff's law is concerned with ________.

a) the function of bone being dependent on shape
b) vertical growth of bones being dependent on age
c) the thickness and shape of a bone being dependent on stresses placed upon it
d) the diameter of the bone being dependent on the ratio of osteoblasts to osteoclasts

c) the thickness and shape of a bone being dependent on stresses placed upon it

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