Procedure H Muscles Of The Forelimb

1. Place the fetal pig in the dissecting tray with its ventral side up.

2. Remove any remaining fat and connective tissue from a forelimb to expose the muscles.

3. Transect the pectoral muscles and lift aside their cut edges.

4. Study figure 24.8, and then locate and dissect the following muscles from the medial surface of the arm and forearm of the forelimb:

medial arm muscles biceps brachii triceps brachii long head medial head

Figure 24.8 Medial muscles of the right forelimb, ventral view.

Figure 24.8 Medial muscles of the right forelimb, ventral view.

Fetal Pig Triceps Brachii Muscle Ventral

medial forearm muscles extensor carpi radialis flexor carpi radialis flexor digitorum profundus flexor digitorum superficialis flexor carpi ulnaris

5. Place your pig onto its lateral surface. Study figure 24.6, which shows the lateral surface of the forelimb. Locate and dissect the following muscles on the lateral surface of the arm and forearm of the forelimb:

lateral arm muscles triceps brachii long head lateral head brachialis lateral forearm muscles extensor carpi radialis extensor digitorum communis extensor digitorum lateralis extensor carpi ulnaris

6. See table 24.5 for the origins, insertions, and actions of these muscles of the forelimb.

7. Complete Part D of the laboratory report.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

Get My Free Ebook


Post a comment