AnswersGA-Essentials of HealthcareUnit Test

Unit Test — Unit test Answers

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1
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Joints can be classified by their structures. Which is an example of a cartilaginous joint?

A
The joints that articulate the bones of the skull.
B
The joints that articulate the bones of the spine.
C
The joints that articulate the bones of the pelvis.
D
The joints that articulate the bones of the legs.
2
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Which type of articulation is used primarily for stabilization?

A
synovial
B
cartilaginous
C
fibrous
D
ligament
3

Which correctly describes the joint that is pointed out in the diagram?

Question illustration
A
It is a synarthrosis joint because it can move slightly.
B
It is a synarthrosis joint because it can move freely.
C
It is a diarthrosis joint because it can move slightly.
D
It is a diarthrosis joint because it can move freely.
4

Which characteristic distinguishes muscle cells from most other human body cells?

A
Muscle cells are circular in shape.
B
Muscle cells are all the same size.
C
Muscle cells work only when needed.
D
Muscle cells have multiple nuclei.
5

The extraocular muscles and the muscles of mastication are part of the

A
back muscles.
B
abdominal region muscles.
C
face muscles.
D
legs and hips muscles.
6

Most skeletal muscles are in pairs so that

A
one muscle alternates with the other muscle to equalize the work load.
B
one muscle flexes (bends) and the other muscle extends.
C
one muscle does more work and the other muscle does less work.
D
one muscle uses more energy and the other muscle uses less energy.
7

Nancy and Esteban are working on a model of an ellipsoidal joint. Which two pieces should they select for their model?

Question illustration
A
i and ii
B
iii and iv
C
i and iii
D
ii and iv
8

Which best describes a tendon?

A
a flexible tissue that acts as a shock absorber between bones
B
a somewhat elastic tissue that connects bone to either bone or cartilage
C
a flexible and compressible tissue that provides joint stability
D
a tough and elastic tissue that connects muscle to bone to move joints
9

Muscles are often arranged in opposing pairs. Which pair of muscles are the arrows pointing to?

Question illustration
A
deltoid and pectoralis
B
hamstrings and quadriceps
C
flexor and extensor
D
biceps and triceps
10

What is one difference between the sternum and the femur?

A
The femur contains yellow marrow, but the sternum does not.
B
The femur is involved in protection, and the sternum is involved in movement.
C
The femur makes red blood cells, and the sternum makes white blood cells.
D
The femur contains compact bone, but the sternum does not.
11

Which articulations allow for greatest range of motion?

A
synovial joints because they allow for the greatest flexion, extension, and rotation
B
cartilaginous joints because they cushion and protect the joints from injury
C
muscular joints because they have the muscles to provide the motion
D
fibrous joints because they contain tendons and ligaments for flexibility
12

Which correctly matches connective tissue type with its function?

A
endomysium a layer of collagen that forms a layer around the whole muscle
Option A
B
epimysium a layer or connective tissue that surrounds each bundle of muscle fibers
Option B
C
perimysium a layer of connective tissue that adds support and protection to each muscle fiber
Option C
D
deep fascia helps organize masses of tissue into compact bundles to keep them in a specific location
Option D
13

The heart muscle is an example of

A
skeletal muscle.
B
smooth muscle.
C
involuntary muscle.
D
voluntary muscle.
14

Janis tore a ligament in her ankle. Until the injury heals, she is at most risk for which of the following?

A
dislocating bones
B
losing cartilage
C
producing abnormal blood cells
D
sustaining nerve damage
15

What are articulations?

A
junctions in the body that connect organ to bone
B
junctions in the body that connect muscle to nervous tissue
C
junctions in the body that connect bone to bone
D
junctions in the body that connect muscle to organ
16

Albert recently had knee surgery. Now Albert must make physical therapy a part of his routine so that

A
he does not gain weight.
B
his muscles grow faster.
C
his leg bones grow faster.
D
his muscles do not atrophy.
17

Which is a large, fan-shaped muscle that forms the chest and enables several arm movements?

A
sternocleidomastoid
B
pectoralis
C
biceps
D
transverse abdominis
18

The elbow is an example of a

A
synarthrosis joint.
B
hinge joint.
C
cartilaginous joint.
D
ball and socket joint.
19

Diarthrosis joints are subclassified according to the kind of movement that they permit. Which types of diarthrosis joints allow rotational movement?

A
ball and socket, saddle, and pivot joints
B
ball and socket, ellipsoidal, and gliding joints
C
ellipsoidal, hinge, and pivot joints
D
ellipsoidal, saddle, and gliding joints
20

Which is a part of the axial skeleton?

A
the arms
B
the skull
C
the legs
D
the hips

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