Mastering A&p Ch 6

Front 1

Which of the following functions of the skeletal system is most affected by gravity?

Back 1

body support

Front 2

Which of these is a primary role of the skeletal system?

Back 2

leverage
calcium homeostasis
muscle attachment site
All of these are primary roles of the skeletal system.

Front 3

Osteoblasts differentiate from __________.

Back 3

osteoprogenitor cells

Front 4

Osteoblasts are squamous cells that develop into ___________.

Back 4

osteocytes

Front 5

Which of the following characteristics applies to the cells known as osteoclasts?

Back 5

the cells dissolve matrix

Front 6

osteoclasts

Back 6

break down bone- for release of calcium

Front 7

Spongy bone comprises an open meshwork of osseous spicules called __________.

Back 7

trabeculae

Front 8

The type of bone that forms the diaphysis of a long bone is called __________ bone.

Back 8

compact

Front 9

spongy bone is filled with

Back 9

red marrow

Front 10

During endochondral bone formation, the primary ossification center is located in the __________.

Back 10

diaphysis

Front 11

What structure is necessary for a bone to grow in length?

Back 11

epiphyseal cartilage

Front 12

Which of these forms by intramembranous bone formation?

Back 12

mandible

Front 13

Endochondral bone development begins with the formation of a(n) __________.

Back 13

cartilage model

Front 14

If osteoblasts are more active than osteoclasts, bones may become __________.

Back 14

denser
stronger
thicker
Any of these changes may result if osteoblasts are more active than osteoclasts.
SubmitMy AnswersGive Up

Front 15

Which of these cell types plays a role in bone remodeling?

Back 15

osteoclast
osteoblast
osteocyte
All of these types of cells are involved in bone remodeling.

Front 16

Which of these factors does not contribute significantly to normal bone formation?

Back 16

potassium intake

Front 17

Which of these is not required for normal bone formation?

Back 17

vitamin e

Front 18

Calcitriol is required for __________.

Back 18

absorbing dietary calcium and phosphate

Front 19

A drop in blood calcium levels stimulates the secretion of __________.

Back 19

Parathyroid Hormone

Front 20

Roughly what portion of the body's total calcium content is deposited in the skeleton?

Back 20

99%

Front 21

What is normally found at a fracture hematoma?

Back 21

blood clot
dead bone
bone fragments
All of these are found at the site of a fracture hematoma.

Front 22

When a fractured bone heals it leaves a thickened region known as a ____________.

Back 22

callus

Front 23

In a __________ fracture, the broken bone penetrates through the skin.

Back 23

compound

Front 24

A bone scan of an older patient revealed the beginnings of osteoporosis. Which of these interventions is not recommended?

Back 24

bed rest

Front 25

The hip joint is a __________.

Back 25

diarthrosis

Front 26

Which of these is a type of joint?

Back 26

synovial
fibrous
cartilaginous
All of these are types of joints.

Front 27

The coxal bones join anteriorly at a __________.

Back 27

symphysis

Front 28

The synarthrosis that binds the two parietal bones together is a ___________.

Back 28

suture

Front 29

a synovial joint also called a

Back 29

diarthrosis

Front 30

bursae may be found

Back 30

in tendon sheaths
beneath the skin covering a bone
within connective tissue exposed to friction or pressure
Bursae may be found in all of these locations.

Front 31

articular cartilage is found within a

Back 31

synovial joint

Front 32

The fluid that accumulates within a swollen joint was produced by the __________,

Back 32

synovial joint

Front 33

the elbow joint is an example of the

Back 33

monaxial joint

Front 34

the joint with the greatest range of motion is the

Back 34

humerus scapula

Front 35

Excessive turning of the sole of the foot outward is called __________.

Back 35

eversion

Front 36

Which of the following movements best illustrates abduction?

Back 36

a. spreading the fingers
b. turning the palm upward
c. opening the mouth
d. bending of the head backwards

answer: spreading the fingers

Front 37

the opposite of dorsiflexion is

Back 37

plantar flexion

Front 38

movement of the vertebral column toward the side

Back 38

lateral flexion

Front 39

Protrusion of the nucleus pulposus is a sign of __________.

Back 39

a herniated intervertebral disc

Front 40

Which structure of the intervertebral articulation gives the disc its resiliency and ability to absorb shock?

Back 40

nucleus pulposus

Front 41

The knee is reinforced laterally by the ________ ligament.

Back 41

fibular collateral

Front 42

Which of these statements about the hip joint is false?

Back 42

It has a biaxial design.

Front 43

Which of these more commonly occurs with advancing age?

Back 43

osteoarthritis

Front 44

Receptors in the joint capsule provide information directly to the __________ system.

Back 44

nervous

Front 45

The __________ nervous system controls glandular secretion.

Back 45

sympathetic and parasympathetic

Front 46

The afferent division of the PNS _____________.

Back 46

carries sensory information

Front 47

functions to sheath certain axons of the central nervous system (CNS).

Back 47

The oligodendrocyte

Front 48

Astrocytes have many functions, including the maintenance of the

Back 48

blood - brain barrier (BBB).

Front 49

The axon hillock connects the axon with the __________.

Back 49

cell body

Front 50

Which is the largest and most abundant type of neuroglia?

Back 50

astrocytes