Cat Dissection: Day 4:
Lab Agenda:
- Prepare lab station for dissection: pan, tools, paper towels, lab manual. Remember to wear your gloves, goggles, and facemask (if desired).
- Bring your cat specimen to you 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 previous lab days:
- Jaw/mandible/throat muscles
- Abdominal muscles – superficial AND deep
- Shoulder/upper arm muscles
- Forearm muscles
- Leg muscles – all
- Locate the muscles listed below on your cat specimen. Attempt to locate the origin and insertion of each muscle by teasing the muscle. Do not cut through the muscles. Then, determine the action that each of these muscles performs and fill in the last box of this table. You may find this web link helpful:
1. / spinotrapezius, acromiotrapezius, and clavotrapezius (trapezius) / Occipital bone, spines of C7 and all T vertebrae / spine and acromion of scapula
2. / latissimus dorsi / lower vertebrae, iliac crest / intertubercular groove of humerus
3. / serratus anterior / upper 8 ribs / anterior aspect of medial border of scapula
4. / rhomboideus / spinous process of C1-T5 / medial border of scapula
5. / pectoralis major / clavicle, sternum, costal cartilages / greater tubercle of humerus
6. / pectoralis minor / ribs 3,4,5 / coracoid process of scapula
7. / acromiodeltoideus, spinodeltoideus and clavodeltoideus (deltoids) / clavicle, acromion and scapular spine / deltoid tuberosity of humerus
8. / supraspinatus / supraspinous fossa of scapula / greater tubercle of the humerus
9. / infraspinatus / infraspinous fossa / greater tubercle of the humerus
10. / triceps brachii / axillary border of scapula, posterior humerus / olecranon process of the ulna
11. / biceps brachii / coracoid process, intertubercular groove of the humerus / radial tuberosity
12. / brachialis / distal anterior humerus / coronoid process of ulna
13. / flexor carpi ulnaris / medial epicondyle of humerus, olecranon process / base of 5th metacarpal, pisiform and hamate
14. / palmaris longus / medial epicondyle of humerus / palmar aponeurosis
15. / flexor carpi radialis / medial epicondyle of humerus / base of 2nd and 3d metacarpals
16. / pronator teres / medial epicondyle of humerus / lateral radius
17. / brachioradialis / distal humerus / styloid process of radius
18. / extensor carpi radialis / lateral epicondyle of humerus / metacarpals II and III
19. / extensor digitorum communis / lateral epicondyle of the humerus / posterior surfaces of distal phalanges of digits 2-5
20. / extensor digitorum minimi / -- / --
21. / extensor carpi ulnaris / lateral epicondyle of humerus / metacarpal V
22. / masseter / zygomatic arch / angle and ramus of mandible
23. / mylohyoideus / mandible / Hyoid
24. / digastricus / mandible and mastoid process / hyoid bone
25. / sternohyoideus / manubrium and clavicle / hyoid bone
26. / sternomastoideus / manubrium, clavicle / mastoid process
27. / external oblique / lower 8 ribs / iliac crest and linea alba
28. / internal oblique / lumbodorsal fascia / lower 4 ribs
29. / transverse abdominis / iliac crest, cartilages of lowest ribs / linea alba and pubic crest
30. / rectus abdominis / pubic crest and pubic symphysis / ribs 5-7 and xiphoid process
31. / tensor fascia latae / iliac crest and anterior superior iliac spine / iliotibial tract
32. / gluteus medius / ilium / greater trochanter of the femur
33. / gluteus maximus / ilium, sacrum, coccyx / iliotibial tract, gluteal tuberosity of femur
34. / sartorius / anterior superior iliac spine / tibia
35. / gracilis / pubis / medial tibia
37. / biceps femoris / ischial tuberosity and femur / tibia and fibula
38. / semitendinosus / ischial tuberosity / medial aspect of proximal tibia
39. / semimembranosus / ischial tuberosity / medial condyle of tibia
40. / vastus lateralis / linea aspera / patella and tibial tuberosity
41. / vastus medialis / linea aspera / patella and tibial tuberosity
43. / rectus femoris / anterior inferior iliac spine / patella and tibial tuberosity
44. / gastrocnemius / medial and lateral condyles of femur / via achilles tendon onto calcaneal tendon
45. / tibialis anterior / lateral condyle and tibial shaft / first cuneiform and first metatarsals
46. / soleus / head of fibula and tibia / calcaneal tendon onto calcaneus
47. / fibularis longus / head of fibula / first metatarsal
48. / extensor digitorum longus / posterior tibia / distal phalanges of toes 2-5
- Cat Dissection/Muscular System target:
- I can locate and name the superficial muscles of the abdomen and thoracic cavity:
- Clavodeltoid
- Pectoantebrachialis
- Pectoralis major
- Pectoralis minor
- Xiphimumeralis
- Latissimus dorsi
- External oblique
- Linea alba
- I can locate and name the deep muscles of the abdomen and thoracic cavity:
- Internal oblique
- Transverse abdominis
- Rectus abdominus
- Scalenes
- Serratus ventralis
- Subscapularis*
- I can locate and name the muscles of the jaw and neck:
- Mandible
- Digastric muscles
- Masseter
- Sternohyoid
- Sternomastoid
- Clavotrapezius
- I can locate and name the muscles of the shoulder and deep neck:
- Clavotrapezius
- Clavodeltoid
- Acromiotrapezius
- Spinodeltoid
- Spinotrapezius
- Rhomboids
- Supraspinatus
- I can locate and name the muscles of the arm:
- Triceps brachii
- Brachioradialis
- Extensor/Flexor carpi radialis
- Extensor/Flexor carpi ulnaris
- Biceps brachii
- Palmaris longus
- I can locate and name the muscles of the hind limb/leg:
- Sartorius
- Gluteus medius
- Tensor fasciae latae
- Gluteus maximus
- Biceps femoris
- Semitendinosus
- Gastrocnemius
- Soleus
- Extensor digitorum longus
- Fibularis longus
- Calcaneal tendon
- Practice learning the musculature of the cat by visiting these web links:
- Upcoming cat muscle test: ______
- Practice, practice, practice! Come in to chat with your cat, i.e. locate the muscles on your willing specimen, often! Study Hall, Advisory, and before or after school are ready openings for you to study the cat muscles.
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