MUSCLE
LAB
PURPOSE: The
purpose of this lab exercise is to identify major skeletal muscle groups
of the human body.The lab also enables
recognition of lever systems, and antagonistic muscle groups.
OBJECTIVES:By
completing this exercise, students will learn to:
1.
Identify major muscle groups on themselves and their lab partner(s)
2.
Identify agonist / antagonistic muscle groups
3.
Demonstrate specific muscle action
4.
Identify lever system used for each muscle action
PROCEDURE:Using
the appropriate equipment and a reasonable amount of weight - demonstrate
muscle action(s) of indicated muscle groups.Do
8 - 12 repetitions of each exercise.Experience
the muscle fibers as they fire, recruit and fatigue from the repeated workload.As
you exercise each muscle group – identify:
1)lever
system - include bones involved, indicating which bone is the insertion,
and which is the origin.
2)antagonistic
muscle group - group that must relaxso
working muscle
can
contract.
RECORD
-FOR EACH MUSCLE GROUP:
-
muscle action - equipment used / exercise performed.
-bones
involved - indicating insertion and origin
-when
possible - identify specific joint and classify as 1st, 2nd or 3rd
class
lever system
THIS
INFORMATION WILL BE WRITTEN UP AND HANDED IN AS YOUR LAB REPORT
MUSCLE
GROUPS FOR LAB=
GLUTEAL MUSCLES
=
ABDOMINAL MUSCLES
=
QUADRICEPS MUSCLES
=
HAMSTRING MUSCLES
=
GASTROCNEMIUS / SOLEUS MUSCLES
=
ANTERIOR TIBIALIS / PERONEAL MUSCLES
=
BACK MUSCLES
=
SHOULDER MUSCLES
=
CHEST MUSCLES
=
ARM MUSCLES
Each
muscle has 3 main parts: origin, insertion& belly(body).The
origin is the end attached to the part of the skeleton that does not move
when the muscle contracts.The insertion
is the end attached to the part of the skeleton that moves when the muscle
contracts.The belly is the center
of the muscle between the origin and the insertion.
MUSCLE
ACTIONDESCRIPTION
FLEXIONflexor
muscles bend a joint or reduces the angle between two bones
EXTENSIONextensor
muscles straightens a joint or increases the angle between two
bones
ABDUCTIONabductor
muscles carries an appendage or part away from the midline
ADDUCTIONadductor
muscles brings an appendage or part back to the midline
ELEVATIONlevator
muscles raise a part
DEPRESSIONdepressor
muscles lowers a part
ROTATIONrotator
muscles turn one part on another