Muscular System

Question 1

Label the main features of the muscular system from an anterior view?

Answer 1

Do in book

Question 2

Label the main features of the muscular system from a posterior view?

Answer 2

Do in book

Question 3

What are the agonist and antagonist muscles during a leg extension?

Answer 3

Agonist = Quadriceps 
Antagonist = Hamstrings

Question 4

What are the agonist and antagonist muscles during a chest press?

Answer 4

Agonist = Latissimus Dorsi
Antagonist = Pectoralis Major

Question 5

What is the muscular system?

Answer 5

Specialised tissue that enables the body and its parts to move

Question 6

How many muscles are in the body and how much total body mass do they make up?

Answer 6

640 muscles, 40% total body mass

Question 7

What are the 3 types of muscle?

Answer 7

Smooth, skeletal and cardiac muscle

Question 8

Describe smooth muscle?

Answer 8

The fibres are thin and spindle shaped, movement is involuntary, muscle contracts slowly, found in circulatory, digestive, respiratory and urinary systems

Question 9

Describe cardiac muscle?

Answer 9

Found only in the heart, movement is involuntary, healthy cardiac muscle never fatigues, and cardiac muscles pump blood throughout the body and account for the heartbeat

Question 10

Describe skeletal muscle?

Answer 10

Fibres are long and cylindrical, movement is voluntary, contains fast and slow twitch fibres

Question 11

What are the major functions of muscles?

Answer 11

Movement, maintenance of posture, muscle tone and heat production

Question 12

What are the minor functions of muscles?

Answer 12

Protecting the bones and internal organs

Question 13

What are tendons made up of and what is their role?

Answer 13

Tendons are made up of dense, fibrous connective tissues and anchor muscles firmly to bones

Question 14

How is any muscle movement generally accomplished?

Answer 14

By muscles working in pairs

Question 15

What is the agonist?

Answer 15

The prime mover, most responsible for movement and the muscle contracting

Question 16

What is the antagonist

Answer 16

The muscle working in opposite to the agonist, relaxing, slowing down or stopping the movement

Question 17

What occurs when one muscle contracts?

Answer 17

The other muscle in the pair relaxes

Question 18

Give an example of muscles in a pair contracting and relaxing?

Answer 18

When the bicep is contracting and your arm is flexing, its partner, the triceps are relaxing and extending your arm

Question 19

What is the origin?

Answer 19

The attachment of the muscle to the bone that remains stationary

Question 20

What is the insertion?

Answer 20

The attachment of the muscle to the bone that moves

Question 21

What is the belly?

Answer 21

The fleshy part of the muscle between the tendons of origin/insertion

Question 22

Describe skeletal muscle?

Answer 22

Muscles that always work in pairs and move when the brain sends messages to the muscle

Question 23

What are the 2 movements of skeletal muscle?

Answer 23

Contraction (shortening of the muscle)

Extension (lengthening of the muscle)

Question 24

What do contractions in our skeletal muscles help maintain and produce?

Answer 24

Maintain our body position and produce most of the heat required to maintain body temperature