6. Masseter
Other Notes:
• Sometimes
considered the
strongest
muscle
• Much larger on
animals (dogs
and cats) since
they use their
mouths more.
• If your dog or
cat has
something in its
mouth push on
the masseter on
both sides and
they usually will
release it.
--Closes jaw
21. (Not Pictured but required for you to know)
• External Intercostals
– Located in between each
of the ribs
– Action: Breathing
• Internal Intercostals
– Located in between each
of the ribs underneath the
external intercostals
– Action: Breathing
• Internal Oblique
– Located under the external
oblique
– Fibers go the opposite
direction
– Action: forms the
abdominal girdle
• Transverse abdominis
– Located under the internal
oblique
– Fiber direction is
transverse
– Action: Forms the
abdominal wall
I will show you pictures
of these Monday!
31. Biceps brachii
--Elbow flexion
--Forearm supination
Other Notes:
• It is the biceps brachii
• Not the biceps
• You also have a biceps femoris
• Where do you think it is
located?
• Biceps brachii is located on the
anterior of the humerus
32. Triceps brachii
--Elbow extension
Other Notes:
• Triceps brachii is
located on the posterior
humerus
43. Quadriceps
--Hip flexion
--Knee extension
Other Notes:
• 4 muscles
• One muscle (vastus
intermedius) is hidden in the
diagram under the other 3
muscles
44. Sartorius
-- Hip and knee Flexion
-- Hip Abduction
-- Hip External Rotation
Other Notes:
• F.AB.ER. (crosses your
legs)
• Longest muscle in the
body
