Soc-14 The Muscular System

Question 1

What are the 3 types of muscles?

Answer 1

Voluntary, involuntary, cardiac

Question 2

What is a voluntary muscle

Answer 2

Muscles that are under your control, you can choose to contract and relax them

Question 3

What is a involuntary muscle

Answer 3

Muscles that are not under your control, they relax and contract automatically by the nervous system. They are found in the circulatory system and carry red blood cells to muscles

Question 4

What is a cardiac muscle

Answer 4

A muscle only found in the wall of the heart, very specialised type of involuntary muscle. They spread electronical signals from the brain to the heart so all the cells can contract together. This regulates the heart rate

Question 5

What are the 3 structures of muscle

Answer 5

Skeletal muscle, smooth muscle and cardiac muscle

Question 6

For muscle functions see goodnotes

Answer 6

K

Question 7

What is a antagonistic pair

Answer 7

An antagonistic pair is muscles that work together to create movement

Question 8

What are three antagonistic pairs

Answer 8

Quads and hamstring
Tibalis anterior and gastronemius
Bicep and tricep

Question 9

What are the characteristics of a type 1 muscle fiber

Answer 9

A slow twitch muscle fibre that is suited to low intensity work, eg marathon running. These fibres can work for hours

Question 10

What are the characteristics of a type IIa muscle fibre

Answer 10

A fast twitch muscle fibre used in anaerobic work, tend to run out of energy quickly

Question 11

What are the characteristics of type IIx muscle fibres

Answer 11

A fast twitch fibre used in anaerobic work but can generate much greater force than other fibre types

Question 12

Slow twitch fibre (type 1) is what colour

Answer 12

Dark in colour because of hymoglobin and have a good O2 supply

Question 13

Fast twitch fibre (type 2a and 2x) is what colour

Answer 13

Lighter in colour because they don’t use O2 to make energy

Question 14

How does the skeletel and muscular system work together

Answer 14

The muscular system is composed of more than 600 muscles, including the involuntary muscles of the heart, the smooth muscles of the internal organs and the skeletal muscles. All of the muscles are connected to the nervous system which allows movement to start through signals from the brain

Question 15

What is the name of the bone that does not move

Answer 15

Point of origin

Question 16

What is the name of the bone that moves

Answer 16

Point of insertion

Question 17

What 2 muscle groups are muscle types divided into?

Answer 17

Voluntary

Involuntary

Question 18

What are the 3 names of the muscle fibres

Answer 18

Type 1
Type 2a
Type 2x