The Muscular System

Question 1

Classification of muscles by location

Answer 1

Skeletal muscles
Visceral muscles
Cardiac muscles

Question 2

Classification of muscles by location

usually attached to the bones

Answer 2

Skeletal muscles

Question 3

Classification of muscles by location

in the walls of some organs

Answer 3

Visceral muscles

Question 4

Classification of muscles by location

in the heart, myocardium

Answer 4

Cardiac muscles

Question 5

Characteristics of Muscles

striated, voluntary

Answer 5

Skeletal

Question 6

Characteristics

nonstriated, involuntary

Answer 6

Visceral

Question 7

Characteristics

striated, involuntary

Answer 7

Cardiac

Question 8

the red lean meat of the body, make up almost half of the body weight.

Answer 8

Skeletal muscles

Question 9

Skeletal muscle usually controlled by the

Answer 9

cerebrum

Question 10

also called as muscle cells

Answer 10

Muscle fibers

Question 11

many fine threadlike structures

Answer 11

Fibrils or myofibrils

Question 12

a layer of connective tissue

Answer 12

Fascia

Question 13

are usually attached at each to a bone, but some are attached to a cartilage, a
ligament, another muscle or to the skin.

Answer 13

Skeletal muscles

Question 14

The attachment to bone is by connective tissue

Answer 14

a tendon or aponeurosis

Question 15

of a muscle is its more fixed, less movable attachment, usually its proximal end.

Answer 15

Origin

Question 16

of a muscle is its more movable end, usually its distal end.

Answer 16

Insertion

Question 17

sometimes called a sinew cord, or leader is a cordlike fibrous connective structure that extends from the end of a muscle to a bony attachment.

Answer 17

Tendon

Question 18

is a sheet of fibrous connective tissue that is often attached at one end to a muscle, often flat muscle and by the other end to a bone, cartilage, ligament or other muscle.

Answer 18

Aponeurosis

Question 19

is a tunnel-like channel that surrounds a tendon.

Answer 19

A tendon sheath

Question 20

is an inflammation of a tendon sheath

Answer 20

Tenosynovistis

Question 21

a saclike structure lying between a muscle or tendon and an adjacent bony prominence over which the muscle tendon moves.

Answer 21

Bursa

Question 22

is an inflammation of a bursa and it is frequently very painful.

Answer 22

Bursitis

Question 23

the deposition of calcium, may occur in a bursa or tendon sheath.

Answer 23

Calcification

Question 23

muscles do not completely relax when at rest, but remain partly contracted.

Answer 23

Muscle Tone

Question 24

the main function of all muscles is to contract and cause movement of the body or a part of it.

Answer 24

Contraction

Question 25

are muscles that initiate and carry out some movement.

Answer 25

Prime Movers

Question 26

are muscles that perform some movement opposite to that caused by the prime movers.

Answer 26

Antagonists

Question 27

are muscles that act with the prime movers to accomplish some movement but prevent unwanted movement.

Answer 27

Synergists

Question 28

are those that hold the adjacent bones in a fixed position so that the prime : movers may accomplish some certain movement.

Answer 28

Fixation muscles

Question 29

the maintenance of the upright position of the body consists of a balanced contraction of some muscle groups and the partial relaxation of opposing groups.

Answer 29

Posture

Question 30

is a contraction of muscles that may persist for a long period of time, without relaxation.

Answer 30

Muscle spasm

Question 31

follows injury to, or destruction of, the nerves supplying that muscle.

Answer 31

Paralysis of muscles

Question 32

may attack cells in the spinal cord that supply motor nerves to skeletal muscles.

Answer 32

Poliomyelitis (infantile paralysis)

Question 33

Some Characteristics of Skeletal Muscle

Answer 33

* Irritability * Conductivity * Extensibility * Elasticity * Contractility

Question 34

# Some Characteristics of Skeletal Muscle is the property of being able to respond to stimuli.

Answer 34

Irritability

Question 35

# Some Characteristics of Skeletal Muscle is the ability to conduct impulses from nerves, from electrical stimuli

Answer 35

Conductivity

Question 36

# Some Characteristics of Skeletal Muscle is the facility or stretching. This occurs by a lengthening of the fibrils of each muscle fibers

Answer 36

Extensibility

Question 37

# Some Characteristics of Skeletal Muscle the ability to return to the original length following stretching.

Answer 37

Elasticity

Question 38

# Some Characteristics of Skeletal Muscle is the ability to become shorter, and is due to a shortening with thickening of each fibril of each muscle fiber.

Answer 38

Contractility

Question 39

# Functions of Muscles * ------- contract and cause movement. * They maintain -------- in the upright and other positions of the body. * They give --------- by maintaining a partial state contraction.

Answer 39

* Skeletal muscles * position (posture) * support to joints

Question 40

How Muscles Are Named?

Answer 40

* By location * By shape * By Direction of Fibers * By action * Number of Parts

Question 41

# How Muscles are Named examples of By location

Answer 41

Pectoralis major

Question 42

# How Muscles Are Named examples of By shape

Answer 42

Quadratus, deltoid

Question 43

# How Muscles Are Named examples of By Direction of Fibers

Answer 43

Trasversus, obliqe

Question 44

# How Muscles Are Named examples of By Action

Answer 44

Flexor digitorum

Question 45

# How Muscles Are Named Number of Parts

Answer 45

Biceps, triceps, quadriceps

Question 45

# How Muscles Are Named Number of Parts

Answer 45

Biceps, triceps, quadriceps

Question 46

Some Muscles Important in Radiography

Answer 46

* Diaphragm * Pectoralis Major Muscle * Psoas Major Muscle * Intercostal muscles

Question 47

# Some Muscles Important in Radiography Dome-shaped muscular partition that separates the thorax and abdomen.

Answer 47

Diaphragm

Question 48

# Some Muscles Important in Radiography 3 large openings of the Diaphragm

Answer 48

* Aortic hiatus * Esophageal hiatus * Opening of the inferior vena cave

Question 49

Thick fan-shaped muscle that covers the upper anterior chest wall.

Answer 49

Pectoralis Major Muscle

Question 50

Muscle lies lateral to the lumbar vertebrae in the posterior wall of the abdomen.

Answer 50

Psoas Major Muscle

Question 51

Fillin the spaces between adjacent ribs, and their costal cartilages.

Answer 51

Intercostal muscles

Question 52

# The Diaphragm and Radiography * The ---------- lie well above the costal margins and may reach the 4" ribs.

Answer 52

tops of the dome

Question 53

# The Diaphragm and Radiography Following inspiration, they lie at a -------- than the following expiration

Answer 53

lower level

Question 54

# The Diaphragm and Radiography With the subject lying down the diaphragm lies at ------- than when upright.

Answer 54

a higher level

Question 55

# The Diaphragm and Radiography Air escaping from a hole in the wall of the stomach or intestine will rise to the ------------ in the abdomen.

Answer 55

highest possible level

Question 56

# The Diaphragm and Radiography The diaphragm must be included in both ----------- radiography.

Answer 56

chest and abdomen

Question 57

Examples of Ligaments and Tendons

Answer 57

* Inguinal ligment * Patellar ligament * ligamentum teres * Calcaneal tendon

Question 58

Weak Abdominal Areas

Answer 58

* Umbilical Area * Inguinal Area * Femoral Area