Lesson 1

Question 1

Consist of all the muscles of the body

Answer 1

Muscular system

Question 2

Make up proximately 42% of total weight and are composed of long-slender cells(fibers)

Answer 2

Muscular system

Question 3

3 types of muscle

Answer 3

Cardia muscle
Skeletal muscle
Smooth muscle

Question 4

4 major functional characteristics of muscle tissue

Answer 4

Contractility
Excitability
Extensibility
Elasticity

Question 5

The ability of muscle to shorten forcefully or contract

Answer 5

Contractility

Question 6

Is the capacity of muscle to respond to stimulus

Answer 6

Excitability

Question 7

Stretched beyond its normal resting

Answer 7

Extensibility

Question 8

Recoil to its original resting length after it has been stretched

Answer 8

Elasticity

Question 9

Parts of the muscle

Answer 9

Body
Origin
Insertion

Question 10

The main portion

Answer 10

Body

Question 11

The fixed attachment

Answer 11

Origin

Question 12

The point of attachment to the part of the body moved by this muscle

Answer 12

Insertion

Question 13

Attachments, connecting the muscle to bone

Answer 13

Tendon

Question 14

A wide sheet like tendon

Answer 14

Aponeurosis

Question 15

Muscle group and function:

Answer 15

Head and neck muscles
Trunk muscle
Shoulder and upper limb muscle
Lower limb muscle

Question 16

Control facial expressions, mastication and head movement

Answer 16

Head and neck muscles

Question 17

Support the spine, maintain posture and assist breathing

Answer 17

Trunk muscle

Question 18

Move the shoulder, arm, forearm and hand

Answer 18

Shoulder and upper limb muscle

Question 19

Move the hip, leg, foot and toes

Answer 19

Lower limb muscle

Question 20

Is an involuntary, sudden contraction or movement of a muscle group of muscle

Answer 20

Muscle twitch

Question 21

Factors that can cause muscle twitching:

Answer 21

Stress
Fatigue
Caffeine intake
Dehydration
Electrolyte imbalances

Question 22

The process by which fibers generate tension and shorten, lengthen or remain the same length to produce movement or maintain posture

Answer 22

Contraction

Question 23

Brian sends signal to the muscle

Answer 23

Contraction

Question 24

2 types of contraction

Answer 24

Isometric contraction
Isotonic contraction

Question 25

Muscle generates force without changing its length, meaning there is no visible movement to the joint or limb

Answer 25

Isometric contraction

Question 26

Muscle generates force without changing its length, meaning there is no visible movement to the joint or limb

Answer 26

Isometric contraction

Question 27

The muscle changes length while producing force,leading to movement of a joint

Answer 27

Isotonic contraction

Question 28

2 types of isotonic contraction

Answer 28

Concentric
Eccentric

Question 29

The muscle shortens as it contracts

Answer 29

Concentric

Question 30

The muscle lengthens while maintaining tension, usually to control or resist a force

Answer 30

Eccentric

Question 31

Disorders of muscular system:

Answer 31

Muscle strain
Myositis
Muscle dystrophy
Fibromyalgia

Question 32

A tear in a muscle or tendon, usually caused by overuse or sudden injury

Answer 32

Muscle strain

Question 33

Inflammation of muscle tissue

Answer 33

Myositis

Question 34

A group of inherited disorders that cause progressive muscle weakness and degeneration

Answer 34

Muscle dystrophy

Question 35

A disorder characterized by widespread musculoskeletal pain, fatigue and sleep disturbances

Answer 35

Fibromyalgia

Question 36

Muscle are continually working to maintain posture

Answer 36

Tonicity

Question 37

____ the muscle can help prevent a loss of strength

Answer 37

Exercising