1.2.2 Quiz Flashcards
1: muscles must have at least _____ attachments and cross _____________
2, cross at least one joint
Ex: brachialis
- Muscles always _______ and get ____________
Pull, shorter
Ex: brachialis
- The attachment that moves is _______________ and the attachment that is stationary is the _____________
Insertion, origin
Ex: the insertion of the brachial is is at the most distal part of the muscle (ulnar attachment) and the proximal part is stationary (humeral attachment)
- Muscles that decrease the angle between __________ surfaces of the body known as ______________. Muscles that increase the angle between ______________ surfaces of the body are __________________.
Ventral, flexors, ventral, extensors
Ex: brachialis—flexors(decrease the angle), triceps medial head- extensors (increase the angle)-action is called an extension
- Muscles work in ___________________ ___________.
Opposing pairs
Ex: brachialis and triceps medial head
- Muscle ____________________ point to the __________________ and show the _________________ of pull
Striations, attachment, direction
Ex: orbiculaire oculi, brachialis and triceps medial head
How does the structural makeup contribute to the muscles ability to do its job??
Striations, points of attachment and the joint it’s crosses determines how it moves and in what direction which helps it do it’s job
What is origin and insertion
The origin is the muscle attachment that stays stationary and the insertion is the muscle attachment that moves with the muscles motion
What does it mean when an athlete or musician says they need to “warm up”
It means they are moving the muscles they are going to use in the job and in a similar movement to get their muscles used to doing those movements to prevent injury and strain
What is the function of the temporal is? Origin and insertion?
The temporalis function is to move the mandible so the origin would be proximal to the insertion which would be more distal
3 ways muscles are named
Shape, function, region
