Chapter 6 - Muscles Flashcards
Describe in detail voluntary muscle?
Voluntary muscle is attached to bones, works when you want it to, works with its own will, it is also called: skeletal muscle because it is attached to bones, striped muscle because when you look at it under a microscope its striped. Over 40% of our weight is voluntary
What is involuntary muscle?
Some internal examples are: stomach, gut, bladder and blood vessels, its called involuntary because it works on its own
Explain what cardiac muscle is
It is special involuntary muscle that forms the walls of your heart, it works non-stop without tiring, like voluntary its striped
What is muscle fibre?
Muscles are made up of muscle fibres which, there is a mix of slow twitch and fast twitch
What are slow twitch fibres?
Slow twitch fibres contract slowly, and without much force, but they do not tire easily, this is moslty endurance exercise such as long distance running
What are fast twitch fibres?
They contract much faster than slow twitch fibres and with much more force, they do tire quickly. These are suited for activities which need bursts of strength and power, example sprinting.
What do we inherit and how does it work?
Its different in all muscles and different for all people, we inherit this from our parents
What are the main 11 muscles: 1 deltoid 2 3 abdominals 4 5 6 7 8 triceps 9 10 11 gastrocnemius
1 deltoid 2 biceps 3 abdominals 4 quadriceps 5 pectorals 6 latissiums dorsi 7 trapezius 8 triceps 9 gluteals 10 hamstrings 11 gastrocnemius
Are the main 11, prime movers or antagonists?
They are prime movers
What are the functions of these:? 1 deltoid 2 biceps 3 abdominals 4 quadriceps 5 pectorals 6 latissiums dorsi 7 trapezius 8 triceps 9 gluteals 10 hamstrings 11 gastrocnemius
Insert pic from pg 88
Muscles are usually connected to bones by strong cords called?
Tendons
When a muscle contracts usually 1 bone moves what is the other one doing?
The other one is stationery
When a muscle contracts its the ___________ whilst when the muscle relaxes its the _____________
Antagonist —> relaxes
Agonist —> contracts
What does the synergist do?
It helps the prime mover
The state of partial contraction is called?
Muscle tone
