Chapter 10 Flashcards
Muscle Tissue (3 Forms)
Cardiac
Smooth
Skeletal
Actions of Muscles
Muscles can only pull, they cannot push
-what one group does, another group undoes
Functional Groups
Agonist
Antaonist
Agonist
Contracts
Antagonist
Relaxes
Synergist
Helps prime movers
Adds extra force to same movement
Reduces undesirable or unnecessary movement
Naming Skeletal Muscle
Location of Muscle Shape Size Direction of muscle fibers Number of Origins Location of Attachment Muscle Action
Arrangement of Fascicles
Circular- rings
Convergent- broad origin, single tendon insertion
Parallel- strap-like, parallel to long axis
Fusiform- spindle-shaped muscles with parallel fibers
Pennate- short fascicles attach to central tendon running length of muscle
Lever Systems
Lever- bone
Effort- force
Load- resistance
For Pictures
Look at App on Ipad
Pictures and Muscle Functions there
Muscles (Need to Know)
Name
Origin
Insertion
Action
Temporalis
Temporal Region
Mandible
Close Mouth
Masseter
Lateral Region
Mandible
Close Mouth
Buccinator
Mandible
Other Facial Muscles
Mastication, Whistling
Sternocleidomastoid
Sternum
Mastoid Process (Temporal Bone)
Rotate Head
Scalene:
Anterior
Middle
Posterior
Cervical Vertebrae (Transverse Process)
Ribs 1-2
Inspiration (Breathing In)