CAT DISSECTION GUIDE

Goals: To demonstrate proper technique in dissecting procedures To correctly identify major anatomic structures To understand the intricacy and interconnectedness of the body

RULES:1. No food or drink in the classroom2. Follow all directions and guidelines3. No unauthorized dissections4. No unauthorized photos5. Wash and DRY dissecting equipment and try at the end of each class period6. Properly return all supplies

DIRECTIONS FOR CAT STORAGE

REVIEW OF ANATOMICAL TERMINOLOGY

Cranial:

Dorsal:

Proximal:

Medial:

Anterior:

Caudal:

Ventral:

Lateral:

Posterior:

Superficial:

Deep:

You will be responsible for and graded on the following:

I. Muscle identificationII. Thoracic Cavity StructuresIII. Abdominal Cavity StucturesIV. HeartV. Major Arteries and VeinsVI. Excretory StructuresVII. Reproductive Structures

I. Muscle Identification

A. Directions:

Muscles to Identify – Major Muscles Grouped into Four Main Regions

Group 1 – Ventral View Anterior RegionSuperficial Ventral Muscles of thorax, neck, arms and abdomen

Pin Number Pectoantebrachialis….………………………….......1 Pectoralis major..…………………………………..2 Pectoralis minor……………………………………3 Latissimus dorsi………………………………..…..4 Sternomastoid………………………………………5 Clavobrachialis……..………………………………6 External obliques………………………………...…7 Xiphihumeralis …..………………………….…….8

Deep Muscles of chest and forearm Triceps……………………………………………..9 Epitroclearis………………………………………..10 Biceps………………………………………………11

Group 2 – Ventral View Posterior RegionSuperficial and Deep Ventral Muscles of Hind Limb

Sartorius……………………………………….….1 Gracilis……………………………………………2 Flexor digitarum longus…………………………..3 Tibialis anterior……………………………………4 Gastrocnemius ………………………………….5

Deep Muscles – cut the Sartorius and gracilis muscles and peel these muscles back to expose the following

Vastus lateralis…………………………………..6 Caudofemoralis…………………………….……7 Adductor femoris………………………………..8. Semimembranosus………………………………9. Semitendinosus…………………………………10

Group 3 – Dorsal View Anterior RegionSuperficial and Deep Muscles of the back

Superficial Clavotrapezius………………………………………1 Acromiodeltoid……………………………………...2 Spinodeltoid…………………………………………3 Acromiotrapezius……………………………………4 Spinotrapezius…………………………………........5 Latissimus dorsi……………………………………..6 Extrenal oblique…………………………………….7

Deep – Cut the superficial muscles (spinotrapezius and latissimus dorsi) at right angles to the muscle fiber, then peel back to reveal deep muscles. Do this on one half of the body only in order to compare superficial and deep muscles.

Ventral serratus…………………………………….8 Spinalis dorsi………………………………………9 Longissimus……………………………………….10 Intercostal………………………………………….11

Group 4 – Dorsal View Posterior Region

Superficial and Deep Muscles of Hind Leg – Dorsal view

Sartorius…………………………………………..1 Gluteus maximus………………………………….2 Gluteus medius……………………………………3 Tensor fasciae latae……………………………….4 Biceps femoris……………………………………5 Gastrocnemius……………………………………6

Deep muscles – Cut away the biceps femoris to reveal the following Vastus lateralis……………………………………7 Adductor femoris…………………………………8 Semimembranosus…………………………….….9 Semitendinosus…………………………………..10 Internal obturator………………………………….11 Soleus……………………………………………..12

II. Thoracic Cavity Structures

III. Abdominal Cavity Structures

IV. Heart

V. Arteries and Veins

VI. Excretory System

VII. Reproductive System