Download Major Skeletal Muscles

Major Skeletal
Muscles
Do You Even Lift, Bro?
Vocab
 Flexation
= Bending of joint
 Extension = Straightening of a joint
 Flexor = bending
 Extensor = straightening
Abdominal
 Stomach
 Sitting
up, postural alignment
 The rectus abdominus is the visible muscle.
 The transversus abdominus stabilizes your
back, and is underneath
Obliques
 Side
of body
 Rotation and side flexion of body
 External and Internal Obliques are along
the sides
 Having strong obliques can help ward off
back pain
Pectoralis
 Front
of upper chest
 Push up from lying position, push open a
door
 The pecs pull the shoulder and arm
forward
Biceps
 Front
of upper arm
 Lifting, pulling
 Any time you move your hand towards
your shoulder you are using your biceps
Triceps
 Back
of upper arm
 Extension of the elbow joint (straightening
the arm)
Inside of Forearm
 Brachioradialis
 Flexor
Carpi Radialis
 Inside of lower arm
 Many other smaller muscles
Back of forearm
 Flexor
carpi ulnaris
 Extensor carpi ulnaris
 Extensor digitorum
Deltoids
 Top
of shoulder
 Overhead lifting
 Any time you flap your arms
 Three parts:



Anterior
Posterior
Medial
Trapezius
 Upper
and mid-back
 Moves head sideways
 Upper trapezius connects your head to
your shoulders
 When you feel knots in your neck, it’s your
trapezius
Erector Spinae
 Low
back
 Postural alignment
 Often called the “low back” muscle, but it
does run up your entire back
Latissimus Dorsi & Rhomboids
 The
lats are the large triangular muscles in
the midback
 Rhomboids are between the shoulder
blades
 Postural alignment, pulling open a door
Gluteus
 Buttocks
 Climbing
stairs, walking, standing up
 Made of several muscles



Maximus
Minimus
Medius
 The
largest muscle in the body is the
gluteus maximus
Hamstrings
 Thigh-back
 Walking
 Made



up of three muscles
Biceps Femoris (outer most)
Semimembranosus (mid)
Semitendinosus (inner most)
 Don’t
squat below 90 degrees b/c you
could damage your knees
Quadriceps
 Thigh-front
 Climbing
stairs, walking, standing up
 Made up of four muscles




Sartorius- wraps around
Vastus intermedius- middle thigh
Vastus lateralis- outside
Vastus medialis- inside
Gastrocnemius & Soleus
 Back
of lower leg
 When you push off for walking, standing
on tiptoes
 Gives your lower legs their rounded shape
 The soleus is underneath the
gastrocnemius
 Tibialis anterior- rounds towards the front
Stand Up
 Point








to your…
Gluteus
Quads
Biceps
Deltiods
Abdominals
Obliques
Soleus
Latissimus dorsi
Muscle Contraction Challenge
 Put
the contraction cycle in order…
Muscle Project…