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Cat skeletal muscle
General hint: muscles can be tough to ID. If you are having trouble, look through the
pictures for that section of the animal and find the easiest one to identify. Then look for
the relationship of your difficult muscle to the easy one. Works for me anyway.
1. Phylum Chordata
Subphylum Vertebrata
Superclass Gnathostomata
Class Mammalia
Be able to identify the following:
Superficial musculature
Platysma/cutaneous maximus
Head and Neck
Masseter
Mylohyoid
Digastric
Geniohyoid
Hyoglossus
Sternohyoid
Thyrohyoid
Temporalis
Neck and Pectoral region
Sternomastoid
Clavobrachialis
Pectoralis minor
Spinodeltoid
Latissimus dorsi
Triceps (long/lateral)
Cleidomastoid
Levator scapulae
Splenius
Infraspinatus
Brachialis
Scalenes (ant., med.,post.)
Rhomboideus
Coracobrachialis
Clavotrapezius
Pectoralis major
Acromiotrapezius
Spinotrapezius
Epitrochlearis
Clavobrachialis
Rhomboideus capitis
Acromiodeltoid
Supraspinatus
Teres major
Subscapularis
Pectoantebrachialis
Teres minor
Notice that the cat pectoralis major and minor are homologous with portions of
the necturus pectoralis. This occurs in many limb and girdle muscles, one muscle
evolving into two. How does this relate to locomotion in this case?
Forelimb
Brachioradialis
E. digitorum communis
E. carpi ulnaris
F. Carpi ulnaris
Pronator teres
E. Carpi radialis longus
E d. lateralis
Abductor pollicis longus
Biceps brachii
F. digitorum profundus
F. carpi radialis
F. digitorum superficialis
Serratus ventralis
External abdominal oblique
Back
Abdomen
External abdominal oblique Internal abdominal oblique
Transversus abdominis
Rectus abdominis
Ext./int. intercostal
Pelvic region and proximal hindlimb
Sartorius
Gluteus maximus
Biceps femoris
Caudofemoralis
Semitendinosus
Gluteus medius
Vastus lateralis
Semimembranosus
Rectus femoris
Vastus intermedius
Gracilis
Adductor longus
Adductor femoris
Vastus medialis
Iliopsoas
Pectineus
Tensor fascia latae
Distal hindlimb
Tibialis anterior
Extensor digitorum longus
Peroneus group
Peroneus tertius
Gastrocnemius
Tibialis posterior
Flexor digitorum longus
Check out p. 114-115 of Kardong: Homologies are drawn for several muscles. Be very
familiar with these.