Transcript FHC Cat Dissection

FHC Cat Dissection
Superficial Muscles
Of
The Neck
Sternohyoid (#4 Below)
#5 is the
Sternomastoid!
The
sternothyroid is
beneath the
sternohyoid.
Sternohyoid
Sternomastoid
It’s a deep
muscle visible
only if the
sternohyoid (#5)
is cut and
reflected!
Sternothyroid
Note that it lies directly atop the
trachea!
Sternomastoid (#5 Below)
Do
NOT
sever
this
vessel
Sternomastoid
Muscles of the Neck
A Second View
6. Sternomastoid
4. Sternohyoid
5. Sternothyroid
FHC Cat Dissection
Superficial Muscles
Of
The Back and
Shoulder
Latissimus Dorsi (7)
Another View of the
Latissimus Dorsi
Spinotrapezius
Note that the spinotrapezius is shaped like a triangle!
Acromiotrapezius
A very thin muscle that overlies the supraspinatus.
Clavotrapezius
Levator Scapulae Ventralis
Another
View of
the
Levator
Scapulae
Ventralis
The Deltoid Group
In man, the deltoid is one muscle. In
a cat, the deltoid is subdivided
into three muscles:
1. Spinodeltoid
2. Acromiodeltoid
3. Clavobrachialis (Clavodeltoid)
Spinodeltoid
Another
View of the
Spinodelto
id
Acromiodeltoid
Again, the
Acromiodeltoid
Clavobrachialis
Again, the
Clavobrachialis
Triceps - Lateral Head
Triceps
- Lateral
Head
Triceps - Long Head
Triceps Long Head
FHC Cat Dissection
Superficial Muscles
of the Hips,
Small of the Back, and
Buttocks
Semitendinosus (#5 Below)
Biceps Femoris
Caudofemoralis (#6 Below)
Gluteus Maximus (#7 Below)
Gluteus Medius
Tensor Fascia Latae (#2 Below)
The Iliotibial Tract (lower #2) has been pulled
back to reveal the Vastus Lateralis (#3)
Tensor Fascia Latae - a 2nd View
The Iliotibial Tract has been (accidentally) removed!
Sartorius (#1 Below)
Sartorius - A Second View
I’m Right Here!
FHC Cat Dissection
We’ll Be
Looking Right
Here!
Superficial Muscles of the Anterior
Thoracic Region
Pectoantebrachialis (#1)
Pectoantebrachialis
A Second View
Pectoralis Major (#2)
Pectoralis Minor (#3)
Pectoralis Minor
A Second View
Xiphihumeralis (#4)
Linea Alba
It’s The “White Line” That Runs The Length Of the
Thorax and Abdomen - The Linea Alba Serves As a
Site of Separation of Bilaterally Symmetric Muscles!
Epitrochlearis
Using your mall probe, tease it away from surrounding
muscle.
Triceps - Long Head
Note: The Epitrochlearis is cut and reflected to
reveal the long head of the triceps brachii.
In Order To View The Next 3 Muscles, You
Must Reflect The Latissimus Dorsi
Latissimus Dorsi - Reflected
Note: The
scapula has
been pulled
away from the
body, and you
are viewing its
undersurface.
The muscle
bordering the
lateral edge (#8)
is the teres
major and the
muscle next to it
(#9) is the
subscapularis
Teres Major (Deep Muscle)
In order to view the Teres Major, you
must reflect the Latissimus Dorsi.
Teres Major - a 2nd View
Subscapularis - A Deep Muscle
2
It is Muscle #2 Above!
Subscapularis - a 2nd View
5
Serratus Ventralis
#1(Shaped Like a Fan!) In The Illustration
Above!
Serratus Ventralis - a 2nd View
4
FHC Cat Dissection
Superficial Muscles of
the Abdominal
Region
Aponeurosa
A thick membrane covering the rectus abdominis
muscles.
Rectus Abdominis
Rectus
Abdominis
The aponeurosa has been pulled away to reveal the
rectus abdominis
Muscles of the Abdominal
Flank
1.External Abdominal Oblique
2.Internal Abdominal Oblique
3.Transversus Abdominis
Where To Make Your
Abdominal Muscle Cuts
External Abdominal Oblique
Postage Stamp Sized!
Internal Abdominal Oblique
Transversus Abdominis
If you can only find 2 muscle layers, you must cut more dorsally!
FHC
Cat Dissection
Muscles of the Lower Forelimb
Ventral View
Brachioradialis
NOTE:
The cat is
lying on
its back!
#5 Is The Brachioradialis!
Extensor Carpi Radialis
The Extensor
Carpi Radialis is
actually 2 muscles!
6. Extensor Carpi
Radialis (Longus)
7. Extensor Carpi
Radialis (Brevis)
We’ll separate them when we
do the extensors.
Flexor
Carpi
Radialis
#9 is the
Flexor Carpi
Radialis!
Flexor
Digitorum
Profundis
You must transect
the plamaris longus
at its distal end.
It is the two-headed
muscle that lies
beneath!
Palmaris
Longus
It’s #10 to the right
- the broadest,
easiest to locate of
the flexors!
Flexor
Carpi
Ulnaris
#11 to the right, it is
the flexor that
overlies the ulna.
Run a pin into it and
leave it as a point of
reference - we’ll use
it in identifying the
extensors.
Biceps Brachii
The
Epitrochlearis
is cut and
reflected!
Triceps - Medial Head
Median Nerve
Triceps - M.H.
Triceps - L.H.
Ulnar Nerve
Epitrochlearis - Cut and Reflected
The truth is…we’ve already done this. Free Points For
All!
Pronator Teres
FHC Cat Dissection
Superficial Muscles of the
Upper Forelimb
First, you must cut and reflect
the Triceps - Lateral Head
Triceps - Long Head
Triceps - Long Head
Yes…this is the Third Time we’ve seen it!
Brachialis
Brachialis
Triceps - Medial Head
Triceps - Medial Head
Clavobrachialis
Clavobrachialis
Anconeus
Anconeus
FHC Cat Dissection
Superficial Muscles of the
Lower Forelimb - Lateral
View
Brachioradialis (Again)
#1 - A Lateral View of the Brachioradialis!
Brachioradialis - a 2nd View!
Extensor Carpi Radialis
Longus (#2 Below)
Extensor Carpi Radialis Longus
A Second View (#5 Below)
Yes, this is our 2nd View of the Extensor Carpi Radialis!
THIS TIME we’re separating it into the longus and brevis.
Extensor Carpi Radialis
Brevis (#3 Below)
Extensor Carpi Radialis Brevis
A 2nd View (#6 Below)
Extensor Digitorum
Communis (#4)
This is
often the
extensor
with the
longest
tendon.
Tendon!
Extensor Digitorum Communis
A Second View (#7)
Extensor Digitorum Lateralis
(#5)
Extensor Digitorum Lateralis
A Second View (#8)
Extensor Carpi Ulnaris (#6)
Extensor Carpi Ulnaris
A Second View (#9)
Flexor Carpi Ulnaris
This muscle
should have a
pin still
inserted into it
from the
inspection of
the medial
foreleg
(Muscles Page
#6)
Flexor Carpi Ulnaris - a 2nd
View (#10)
Lateral Forelimb Review
A - Brachioradialis
B - Extensor Carpi Radialis Longus
C - Extensor Carpi Radialis Brevis
D - Extensor Digitorum Communis
E - Extensor Digitorum Lateralis
F - Extensor Carpi Ulnaris
FHC Cat Dissection
Superficial and Deep
Muscles of the Hindlimb
Tibialis Anterior (#12)
Extensor Digitorum Longus
(#11)
Peroneus Longus (#10)
Soleus (#9)
Gastrocnemius
Biceps Femoris (Cut and Reflected)
Semitendinosus (#7)
The large
nerve visible
as #6 is the
Ulnar
Nerve…you’ll
have to
identify it at
the end of the
dissection!
2-Gluteus Maximus
3-Gluteus Medius
4 - Tensor Fascia
Latae
Semimembranosus
Vastus Lateralis (#5)
Adductor Femoris
FHC Cat Dissection
Superficial Muscles of
the Upper Hindlimb Medial View
Sartorius
and
Gracilis
Sartorius
Gracilis