Muscular System

Question 1

Ability to be stretched

Answer 1

Extensibility

Question 2

Ability to become short and thick

Answer 2

Contractibility

Question 3

Ability to return to its original shape

Answer 3

Elasticity

Question 4

3 main kinds of muscles and its functions

Answer 4

Cardiac- forms the walls of the heart & contracts to circulate blood.
Visceral- contracts to cause movement in organs
Skeletal- body movement

Question 5

Difference between voluntary and involuntary

Answer 5

Voluntary- when a person has control over their actions

Involuntary- they function w/o conscious thought or control

Question 6

4 functions of skeletal muscles

Answer 6

• attach to bones to provide voluntary movement
• produce heat & energy
• help maintain posture by holding the body erect
• protect internal organs

Question 7

2 ways skeletal muscles attach to bones

Answer 7

Tendons or fascia

Question 8

Decreasing the angle between two bones

Answer 8

Flexion

Question 9

Swinging the arm around in a circle

Answer 9

Circumduction

Question 10

Moving a body part toward the midline

Answer 10

Adduction

Question 11

Turning the head from side to side

Answer 11

Rotation

Question 12

Moving the arm out to the side

Answer 12

Abduction

Question 13

Strong, tough, connective tissue cord that attaches muscles to bones

Answer 13

Tendon

Question 14

State of partial contraction

Answer 14

Muscle tone

Question 15

Severe tightening of a flexor muscle

Answer 15

Contracture

Question 16

The end of a muscle that moves when the muscle contracts

Answer 16

Insertion

Question 17

What occurs when muscles atrophy? What causes it ?

Answer 17

Shrink in size or loose strength , not used for a long period .

Question 18

Joints affected most frequently by contractures

Answer 18

Foot, fingers, wrists, knees, & other joints.

Question 19

Muscles between ribs used for breathing

Answer 19

Intercostals

Question 20

Three muscle injection sites

Answer 20

Deltoid, Gluteus Maximus, Quadriceps femoris

Question 21

Muscle that compresses the abdomen

Answer 21

Rectus abdominus

Question 22

Myasthenia Gravis

Answer 22

Nerve impulses aren’t properly transmitted & it leads to progressive muscular weakness and paralysis.

Question 23

Strain

Answer 23

Overstretching or injury to a muscle or tendon.

Question 24

Is foot drop a common contracture ?

Answer 24

Yes

Question 25

Myalgia

Answer 25

Pain in a muscle or a group of muscles

Question 26

Ability to respond to a stimulus

Answer 26

Excitability