chapter 6 muscular system Flashcards
What is the name of the proximal attachment? Distal attachment?
the proximal is the origin and the distal is the insertion
Typically which attachment is more movable?
the insertion
What is it called when the origin moves toward the insertion?
reverse muscles action such as pulls ups
usually longer and can move the joint and distal segment further
parallel fibers
usually shorter, but more of then in an area which increases strength
oblique fibers
long thin > Range
which fibers is this
strap
shaped like a spindle; wider in the middle
which fiber is this
shaped like a spindle; wider in the middle
4 sided, flat broad attachments
which fiber is this
rhomboid
flat, fan shaped, broad attachment at one end, narrow attachment at the other end
which fiber is this
triangular
Anterior tibialis
Sartorius
what king of fibers are they
strap
Biceps what kind of fibers are they
fusiform
closed kinetic chain
Distal segment fixed & proximal segment moves
.Standing to sitting, push ups, squats
open kinetic chain
Distal segment free to move and proximal segment remains stationary
Sitting –
.move knee from flexion to extension, free weights
When a muscle cannot be elongated any farther without damage to the fibers
such as stretching
passive insufficieny
The diminished ability of a muscle to produce or maintain active tension
Active tension is tension / force that is generated by a muscle contraction
active insufficieny