Skeletal System

Skull bones are joined by tight connections called

sutures

One role of the fontanels is to

allow for the change in shape of the skull during childbirth

Osteocytes

are the cells responsible for the production of new bone.

The joints between the phalanges are classified as

hinges

A twisting motion of the foot that turns the sole inward is termed

inversion

Humans have ______ pairs of ribs.

12

The appendicular skeleton contains ____ bones.

126

The vertebral column contains _____ lumbar vertebrae.

5

Functions of the curves of the verebral column include which of the following?

Aligns the body's weight in line with the body axis

The special movement of the thumb that allows it to grasp an object and hold onto it is called

Opposition

During the process of______, an existing tissue is replaced with bone.

Ossification

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

Osteoblasts

Bone cells capable of dissolving the bony matrix are termed

Osteoclasts

Which joint permits the greatest range of motion of any joint in the body?

Shoulder

D:

Periosteum

A compound fracture

results in bone projecting through the skin

In anatomical position, when the palm is moved to face posteriorly, the movement of the wrist and hand is called_______.

Pronation

A:

Proximal epiphysis

Which of the following is part of the axial skeleton?

Ribs

Which of the following is a carpal bone?

Scaphoid

The ankle consists of _____ tarsal bones.

Seven

Tarsal bones are classified as _____ bones

Short

The hyoid bone

serves as a base for muscles associated with the larynx, tongue, and pharynx.

Bone-forming cells are called

osteocytes

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

periosteum

The vertebral column contains _______ cervical vertebrae.

7

C:

Distal epiphysis

F:

Endosteum

H:

Epiphyseal Line

Ribs that are connected to the sternum by separate cartilaginous extensions are called ________ ribs.

False

Which of the following is the most important normal hip movement, one that is primarily limited by the surrounding muscles?

Flexion

Ribs that have no connection to the sternum are called_______.

Floating ribs

Which suture connects the occipital bone bone to the parietal bones?

Lambdoid

The bones of the limbs are classified as

Long bones

Bones of the skull that articulate with the nasal bones include (the)

Maxillary bone

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.

Which of the following curves develops as a child begins to stand and walk?

Lumbar

The bone that makes up the lower jaw is the

Mandible

G:

Marrow Cavity

Which joint type can perform rotation movements?

Ball-and-socket

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

Blood cell production

Red bone marrow functions in the formation of

Blood cells

The sole of the foot is supported by the

Calcaneus and talus

The process of depositing calcium salts into a tissue other than bone is called

Calcification

Which of the following accounts for almost two-thirds of the mass of bone tissue?

Calcium phosphate

The atlas is classified as a ___________ vertebra.

Cervical

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

Circumduction

The bony compartment that supports the brain is called the

Cranium

Which of the following is a function of synovial fluid?

Decrease friction within joint

B:

Diaphysis

The shaft of a long bone is called the ________.

Diaphysis

J:

Spongy Bone

Which tarsal bone articulates with the tibia and fibula, transmitting the body's weight from the tibia toward the toes?

Talus

Which of the following is part of the appendicular skeleton?

The scapula

Jason fractured this pisiform bone in an accident. What part of his body is injured?

Wrist

Which of the following is the most likely to be damaged during CPR?

Xiphoid process

A movement away from the longitudinal axis of the body in the frontal plane is

abduction

A movement toward the longitudinal axis of the body in the frontal plane is termed

adduction

The organic component of the matrix, which makes up around one-third of the mass of bone, is dominated by

collagen fibers

The areas of fibrous connective tissue that exist between cranial bones at birth are called

fontanels

The smooth, rounded, or oval articular process of a bone is termed a

head

Regulatory functions of the skeletal system inclue

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

The most inferior portion of the sternum is called the

xiphoid process

The coronal suture is the boundary between which bones?

Frontal and parietal

Bones encased within the temporal bones that are involved in sound detection are called

auditory ossicles

The bones that form the palms of the hands are the

metacarpals

The primary function of _______ is exemplified when bones function as levers.

movement

When one closes the mouth, the movement is called______.

protraction