Anatomy: Ch. 6 Skeletal System

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scoliosis

an abnormal lateral curvature of the spine is termed

appositional growth

an increase in the diameter of growing bone is termed

intramembranous ossification

as the bone enlarges, osteoclasts break down some of the spongy bone and create a marrow cavity. This occurs in:

osteoclasts

bone cells capable of dissolving the bony matrix are called

long bones

bones of the limbs are

ossification

during this process, an existing tissue is replaced with bone

scapula

part of the appendicular skeleton

ribs

part of the axial skeleton

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

Regulatory functions of the skeletal system include:

vitamin D3

Rickets is a condition marked by a softening and bending of bones that occurs in growing children as a result of this deficiency

depress calcium levels in body fluids

The hormone calcitonin functions to

an epiphyseal plate

This presence strongly indicates that the long bone is still growing

abduction

a movement away from the longitudinal axis of the body in the frontal plane

adduction

a movement toward the longitudinal axis of the body in the frontal plane

calcium phosphate

accounts for almost 2/3 of the mass of bone tissue

menisci

fibrous cartilage discs that act as shock absorbers in joints are called

osteons

found only in compact bone

12

humans have __ pairs of ribs

osteoblasts

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

the bones of the pelvis

includes portions of both axial and appendicular elements

circumduction

moving the arm in a loop is an example of which angular movement

sutures

skull bones are joined by tight connections called

trabeculae

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

short

tarsal bones are classified as __ bones

7

the vertebral column contains __ cervical vertebrae

5

the vertebral column contains __ lumbar vertebrae

cervical

the atlas is classified as a __ vertebra.

mandible

the bone that makes up the lower jaw

metacarpals

the bones that form the palms of the hands are the

periosteum

the connective tissue covering the outer surface of a bone

movement

the primary function of __ is exemplified when bones function as levers

calcification

the process of depositing calcium salts into a tissue other than bone

diaphysis

the shaft of a long bone is called the

blood cell production

this primary function of the skeletal system applies to the role of bone marrow

costal cartilages

true ribs are directly connected to the sternum by __

ball and socket

which joint can perform rotation movements

shoulder

which joint permits the greatest range of motion in any joint in the body


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