Muscles Flashcards
What is the main purpose of muscles?
To produce force and motion
What are the four main functions of muscles?
- Maintaining posture
- Physical movement (sitting, walking, eating etc.)
- Movement of internal organs
- Maintaining body temperature
Where is the word muscle derived from?
From the Latin term MUSCULUS
meaning “little mouse”
What connects muscles to bones?
Tendons
How many muscles are there in human body?
650 skeletal muscles
What are three different types of muscles?
- Skeletal Muscle
- Cardiac Muscle
- Smooth Muscle
___________ muscles are voluntary muscles that control nearly every action a person intentionally performs.
Skeletal muscles
___________ attach the muscle to two bones across a joint, as one muscle contracts the other relaxes which moves the bones
Tendons
What are the two types of Skeletal muscles?
- Slow Twitch (Type I)
- Fast Twitch (Type II)
_______________ muscle contain proteins that give it a rich red colour.
Slow twitch (Type I)
Type I muscle fibre works well for….
Aerobic sports such as long distance running and cycling
_______________ muscle is whiter in colour as it has less myoglobin (a oxygen carrying protein).
Fast twitch (Type II)
Fast twitch fibres contract _____________ and ____________ however they ___________ rapidly.
–contract quickly and powerfully
–fatigue rapidly
____________ muscle fibre is useful for anaerobic exercise such as sprinting or for strength sports like weightlifting.
Type II
Smooth Muscle is also called ______________.
Visceral
Is smooth muscle voluntary or involuntary?
Involuntary - it is not controlled by our conscious mind
Where is smooth muscle found in the body?
On walls of many organs and structures such as the oesophagus, stomach, intestines, bladder and blood vessels.
____________ muscles contract to move substances such as food through the organ.
Smooth muscles
____________ muscle is also an involuntary muscle.
Cardiac muscle
Which muscle is only found in the heart and is responsible for keeping he heart pumping?
Cardiac muscle
Muscle makes up around _________ of the total human body weight.
Half
Muscle tissue is around ____% denser than fat tissue.
15%
It takes _____ muscles in the face for us to smile and ____ muscles to frown,
17 muscles to smile 43 muscles to frown
Which is the strongest muscle in the body?
Jaw muscle (masseter)
