Cat Dissection: Day 3:
Jan. 31
Lab Agenda:
I.
II.
III.
IV.
Prepare lab station for dissection: pan, tools, paper towels, lab manual. Remember to wear
your gloves, goggles, and face mask (if desired).
Bring cat specimen to your lab station, untie bag, and place on dissection pan. Save the
body bag, rubber band, and toe tag to be reused at the end of class.
Open the skin of the cat. Finish any remaining dissections from the previous lab day.
a. Jaw/mandible/throat muscles
b. Abdominal muscles - superficial
c. Shoulder/Upper arm muscles
Turn to page 709-710 of your dissection manual and identify and describe the anatomy
listed below. Follow your lab manual to identify the direction of muscle fibers and cleavage
lines. You will need to cut through layers of muscle to visualize the deeper muscles. You
should be able to visualize 3 different muscle layers in the thoracic cavity. If you cut
carefully, on one side of the cat, you should be able to expose each of these layers and fold
them back (reflect them) as you go. The muscles listed here are in addition to the muscles
identified in Lab 2. Review the superficial muscles from Lab 2 before dissecting deeper to
reveal the deep muscle layers.
a. Serratus ventralis
b. Scalenes
c. Subscapularis
d. Rectus abdominis
e. Rhomboid group:
Major
Minor
Capitis
Rhomboideus
f. Layer 1:
External oblique
g. Layer 2:
Internal oblique
h. Layer 3:
Rectus abdominis
i. Splenius
V.
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Sketch and label these muscles from IV.
Cat Dissection: Day 3:
Jan. 31
VI.
Turn to page 711-712 of your dissection manual and identify and describe the anatomy
listed below for the forearm musculature of the cat.
a. Triceps brachii
Long head
Lateral head
b. Brachialis
c. Brachiradialis
d. Extensor carpi
radialis longus
e. Extensor carpi
ulnaris
f. Biceps brachii
g. Epitrochlearis
h. Flexor carpi radialis
i.
Pronator teres
j.
Palmaris longus
k. Flexor carpi ulnaris
VII.
VIII.
Sketch and label these muscles from VI.
Turn to page 713-718 of your dissection manual and identify and describe the anatomy
listed below.
a. Satorius
b. Gluteus medius
c. Gluteus maximus
d. Caudofemoralis
e. Biceps femoris (hamstring)
f.
Semitendinosus (hamstring)
g. Semimembranosus
(hamstring)
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Cat Dissection: Day 3:
Jan. 31
h. Gastrocnemius
i.
Adductor femoris
j.
Extensor digitorum longus
k. Sciatic nerve
l.
Quadriceps
m. Gracilis
n. Soleus
o. Fibularis muscles
p. Tibialis anterior
q. Adductor longus
r.
Calcaneal tendon
s. Flexor digitorum longus
t.
Iliopsoas
u. Plantaris
IX.
X.
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Sketch and label these muscles from part VIII.
CLEAN UP! Re-bag cat, dispose of used materials, wash and dry lab tools, wash down lab
table, wash your hands!
Cat Dissection: Day 3:
Jan. 31
V.
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Cat Dissection: Day 3:
Jan. 31
VII.
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Cat Dissection: Day 3:
Jan. 31
IX.
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