Chapter 11 Flashcards
Parallel
-to long axis
Example of parallel
-Biceps brachii
Convergent
-a broad area converging on an attachment site such as a tendon, aponeurosis, or a raphe
Example of convergent
Pectoralis
Pennate
Fibers come into tendon at an angle
Bipennate
Rectus femoris
Unipennate
Extensor digitorum
Multipennate
Deltoid
Circular muscles - sphincters
Orbicularis oris, ocularis, ani
Bones act as levers, a rigid moving structure
Classes of levers
The joints act as the fulcrum
Classes of levers
The muscle provides applied force to overcome resistance
Classes of levers
Most muscle in the body act as a third degree lever
Classes of lever
Origins
Fixed point of attachment; usually proximal to insertion
Insertions
Moving point of attachment
Muscle attachments
proximal and distal point
Biceps brachii
Prime mover
Brachioradialis
Syngerist
When the muscles work against each other?
antagonistic to the prime mover
Synergists
Helping the muscle
Genio-
Chin
Glossus
Tongue
Rectus
Means straight
Intrinisc
Inside the eyeball
Extrinsic
Attached to the outside of the eyeball
Magnus
Very large muscle
Major
Larger muscle
Brevis
Short muscle
Ab-
Away from
-duct
To move
Abductor
A muscle that moves away
Digitus
Digit
Digiti
Refers to a finger or toe
Facial expression muscles:
Buccinator mm, obicularis oris, frontalis, zygomaticus
Mastication
Move the mandible-masseter, temporalis
Hamstrings
muscles that flex the leg and extend the thigh
4 muscles of the quads
Quadriceps femoris group, rectus femoris, vastus lateralis, vactus intermedius
