Notes On Muscular System Test 7

Question 1

What are the four traits of muscles

Answer 1

• Excitability/ Irritability
• Contractability
• Extensibility
• Elasticity

Question 2

What does excitability/ Irritability mean

Answer 2

Ability to respond to stimulus (Electricity)

Question 3

What does contractability mean

Answer 3

Ability to shorten (weight lifting)

Question 4

What does extensibility mean

Answer 4

Ability to lengthen (flexibility)

Question 5

What does elasticity mean

Answer 5

The Ability of a muscle to return to its original shape

Question 6

What are the three types of muscles

Answer 6

• Skeletal
• Smooth/ Visceral
• Cardiac

Question 7

Where does the skeletal muscles attach, is it striated, and is it voluntary or in-voluntary

Answer 7

• All over the body
• It is striated
• It is voluntary

Question 8

Where are the smooth/ visceral located, is it striated, and is it voluntary or in-voluntary

Answer 8

• Intestines, Stomach, Blood cells
• Non-Striated
• In-voluntary

Question 9

Where is the cardiac muscle, is it striated, and is it voluntary or in-voluntary

Answer 9

• In the heart
• Striated
• in-voluntary

Question 10

What are the three points of attachment

Answer 10

• Origin
• Insertion
• Fascia

Question 11

Describe Origin

Answer 11

Part of muscle that doesn’t move and is USUALLY proximal

Question 12

Describe insertion

Answer 12

Part of the muscle that moves USUALLY distal

Question 13

Describe Fascia

Answer 13

White sheet that covers muscle

Question 14

Muscle Belly

Answer 14

fleshy body of muscle between slender points of attachment (Middle of muscle)

Question 15

Muscle fascicle

Answer 15

layers of tough connective tissue surrounding large skeletal muscles
(CUT THE MUSCLE BELLY IN HALF)

Question 16

What’s a fiber

Answer 16

A muscle cell

Question 17

Muscle Myofibrils

Answer 17

Long cylindrical structures in each muscle fiber

Question 18

What are the circular grippies called in the sliding filament theory

Answer 18

Myosin

Question 19

What are the square grippies called in the sliding filament theory

Answer 19

Actin

Question 20

What is the element that floods the motor units in the sliding filament theory

Answer 20

Calcium

Question 21

What is a muscle twitch

Answer 21

ONE muscular contraction and ONE relaxation

Question 22

What is muscle tetanus

Answer 22

A continuous contraction

Question 23

What is tonus

Answer 23

normal, continuous state of partial muscle contraction

Question 24

What’s a prime mover

Answer 24

muscles responsible for movement

Question 25

What is a synergist

Answer 25

Muscle that assists the prime mover to make a full movement

Question 26

What’s the agonist

Answer 26

The muscle that contracts

Question 27

What’s the antagonist

Answer 27

The muscle that relaxes

Question 28

What’s and example of the agonist and antagonist pairs

Answer 28

Hamstrings and quads

Question 29

Describe a grade 1 muscle strain

Answer 29

When a muscle is stretched too far (feels sore)

Question 30

Describe a grade 2 muscle strain

Answer 30

When a muscle is partially torn ( has a bit of hurt)

Question 31

Describe a grade 3 muscle strain

Answer 31

When a muscle is fully torn ( has a lot of pain and bruises really bad)

Question 32

How do you fix a grade 1 and USUALLY a grade 2 strain

Answer 32

RICE

Question 33

How do you fix a grade 3 and OCASSIONALLY a grade 2 strain

Answer 33

Surgery