Chapter 6 Quiz questions

which of the following primary functions of the skeletal system applies to the role of the red bone marrow?

blood cell production

the majority of the weight of the bone is due to

calcium salts

Channels within bone, involved with cell-to-cell communication, are called

canaliculi

what is the main difference between spongy bone and compact bone?

compact bones contain osteons; spongy bones contain trabeculae

the shaft of a long bone is called the

diaphysis

which of the following is an example of the skeletal system's primary function of providing structural support?

individual bones provide a framework for the attachment of soft tissues and organs

Narrow sheets of calcified matrix are referred to as

lamellae

what kind of bone is this?

long bone; humerus

a primary function of the skeletal system is

maintaining the normal concentrations of calcium and phosphate ions in body fluids

Intramembranous ossification results in the formation of which of the following bones?

mandible

which of the following is formed via intramembranous ossification

mandible

Bone forming cells are called

osteoblasts

Immature, active bone cells that produce new bone matrix are termed

osteoblasts

which of the following matches the cell with its function?

osteoblasts: ossification

________ are giant bone cells with 50 or more nuclei.

osteoclasts

the bone cells that contribute to increases in calcium in blood are the

osteoclasts

which of the following is found only in compact bone?

osteons

two hormones that work together to elevate calcium levels in the body are ______ and ________

parathyroid hormone; calcitriol

a compound fracture

results in bone projecting through the skin

The presence of ________ strongly indicates that the long bone is still growing.

an epiphyseal plate

An increase in the diameter of growing bone is termed ________ growth.

appositional

which of the following occurs in intramembranous ossification?

fibrous connective tissue is converted to bone tissue, which first resembles spongy bone

in the skeletal system, compact bone is usually located

where stresses come from a limited range of directions

despite its strength, bone will crack or even break if subjected to extreme loads, sudden impacts, or stresses from unusual .... remains and the cellular components of the endosteum and periosteum survive. steps in the repair process may take from ....

hematoma formation, callus formation, spongy bone formation, compact bone formation

the connective tissue covering the outer surface of a bone is (the)

periosteum

what are the steps of the endochondral ossification

- chondrocytes enlarge and calcify - bone forms at the diaphysis surface -blood vessels invade the inner cartilage and the new osteoblasts form spongy bone -osteoclasts create a marrow cavity -secondary ossification centers form in the epiphyses

the bone in the epiphysis is..

spongy bone

spongy bone is made up of a network of bony rods or plates called

spongy bone is made

which of the following is NOT a function of the skeletal system

temperature maintenance

you and your twin sister, both 18 years of age, were in a car accident. she had a clean break across the humerus and the upper arm bone-no bleeding, no break in the skin. However you have a very messy break of the distal tibia in the lower leg, requiring pins to be inserted. Which statement is true regarding the differences in your break and your sister's break?

you will be given antibiotics to reduce bacterial infection, whereas your sister will not