Print Form
D I S S E C T I O N
EXERCISE
Dissection and Identification of Fetal Pig Muscles
Time Allotment: Muscle dissection; 4 hours.
Multimedia Resources: See Appendix D for a list of multimedia offerings.
The Anatomy of the Fetal Pig (CBS, 62 minutes, VHS, DVD)
Fetal Pig (DryLab Plus) (ED, CD-ROM)
The Fetal Pig: A Technological Dissection (ED, CD-ROM)
Solution:
Carboglycerine solution
30 grams fungicide (Benomyl, Sigma)
250 milliliters glycerine
1 liter water
Mix together and store in a closed container.
Advance Preparation
335
Comments and Pitfalls
Answers to Questions
Activity 3: Dissecting Trunk and Neck Muscles
Superficial Muscles of the Posterior Trunk and Neck (pp. 711–712)
Activity 4: Dissecting Forelimb Muscles
Upper Forelimb Muscles (p. 713)
Activity 5: Dissecting Hindlimb Muscles
Muscles of the Posterolateral Hindlimb (pp. 713–716)
Muscles of the Anteromedial Hindlimb (pp. 716–717)
Dissection Review
Many human muscles are modified from those of the pig (or any quadruped) as a result of the requirements of an upright posture. The following questions refer to these differences.
1. How does the human trapezius muscle differ from the pig’s? humans have one large single trapezius muscle, but the pig has three separate muscles the
______________________________________________________________________________________
clavotrapezius, the acromiotrzpezius, and the spinotrapezius
______________________________________________________________________________________
2. How does the deltoid differ? the deltoid muscle of a pig is a thin band in humans it is thick and fleshy.
______________________________________________________________________________________
______________________________________________________________________________________
3. How does the extent and orientation of the human sartorious muscle differ from its relative position in the pig? the human satorius is a thin straplike muscle running obliquely across the anterior thigh. the pigs
______________________________________________________________________________________
is flat and covers most of the anterolateral thigh.
______________________________________________________________________________________
4. Explain the differences in terms of differences in function. the human sartorius acts to adduct the thigh and flex the hip. upon contrsction, the human
______________________________________________________________________________________
sartorius produces flexion at the knee and lateral rotation of the hip
______________________________________________________________________________________
5. The human rectus abdominis is definitely divided by four transverse tendons (tendinous intersections). These tendons are absent or difficult to identify in the pig. How do these tendons affect the human upright posture? these tendons support the abdominal muscular wall so that the viscera are not allowed to
______________________________________________________________________________________
become pendulous in the upright posture of humans
______________________________________________________________________________________
336
Dissection Exercise 1
You May Also Find These Documents Helpful
-
H2: Other muscles in the same group would include: Plantaris muscle, the Tibalis Posterier Muscle and the Flexor Hallucis Muscle.…
- 399 Words
- 2 Pages
Satisfactory Essays -
THIS WORKSHEET MUST BE SUBMITTED VIA THE COURSE WEBSITE BY THE DUE DATE AND TIME!! Be sure to use a different COLOR or BOLD when answering these questions. Complete this worksheet while following the APR CD-ROM and Workbook on “The Muscular System”. Keep in mind that there may be parts that this lab assignment intentionally skips, so pay close attention. This laboratory takes time to complete and study, so do not procrastinate. I encourage you to spend time daily on completing this lab assignment. Make sure you are studying all components…
- 2932 Words
- 12 Pages
Good Essays -
17. (a) Describe the structure of a sarcomere and indicate the relationship of the sarcomere to myofilaments. (b) Explain the sliding filament model of contraction using appropriately labeled diagrams of a relaxed and contracted sarcomere.…
- 947 Words
- 4 Pages
Better Essays -
Through the dissection of the fetal pig, we were able to compare and contrast the structure and functions of the organs to those of a human. We dissected the pig and observed all the exterior and interior structures. We found that because both are mammals, the fetal pig’s structure was almost identical to the human body.…
- 687 Words
- 3 Pages
Good Essays -
Muscle tissue is composed of as many as 19 different proteins; the largest components are myosin and actin. All muscle tissue contains actin and myosin; these form the fibers that slide past each other as muscles contract and relax. There are also a number of other proteins found in muscle tissue; these other proteins regulate movement, bundle and anchor actin and myosin along with others functions. As species have evolved, they have diverged in the quantities and types of these other proteins (Bio-Rad, 2006). The muscle proteins examined in this experiment were beef (Bos taurus), bear (Ursus americanus), chicken (Gallus gallus), turkey (Meleagris gallopavo), King Salmon (Oncorhynchus tshawytscha), Albacore Tuna (Scombridae unclassified) and shrimp (species unknown); included as an out-group.…
- 2179 Words
- 9 Pages
Powerful Essays -
Tortora G. J. and Derrickson B. (2007) Introduction to the Human Body, The essentials of anatomy and physiology, 7th Edition. New York, Wiley & Sons 504-506…
- 2814 Words
- 12 Pages
Powerful Essays -
This study seeks to understand the adaptations and components that cause “mini-muscle” mice to have altered muscle structures and characteristics by observing…
- 682 Words
- 3 Pages
Good Essays -
They range from extremely tiny strands such as stapedium muscle which is found in the middle ear to large masses such as muscles of the thigh. Some skeletal muscles are broad in shape and same can be narrow, depends where they are suited. Just about all body movement is caused by skeletal muscle contraction. Skeletal muscle generates heat as a by-product of muscle activity. This heat is vital for maintaining your normal body…
- 685 Words
- 3 Pages
Good Essays -
The gastrocnemius was exposed on the leg of the bullfrog that was removed at the hip joint through careful dissection of the muscle away from the tibo-fibula bone while leaving the it attached to the knee and heel. The muscle was consistently moistened by Ringer’s solution throughout the entire experiment. The Achilles tendon was removed at the heel of the frog. The tibiofibular bone was cut below the knee and the femur below the knee (Frog Skeletal Muscle Experiement).…
- 574 Words
- 3 Pages
Good Essays -
divides into five digital bands that insert to the bottom of which muscle append of…
- 640 Words
- 3 Pages
Good Essays -
The muscular system is what is responsible for the way that we move. Without the muscular system, we wouldn't be able to participate in the normal activities that we do today. There are 700 known/named muscles that are attached to the human skeleton. There are three different types of muscle that can be found in the human body. The Visceral muscle which can be found inside organs such as the stomach. This type of muscle is controlled by the unconcious part of the brain. This muscle is also known as the involuntary muscle. Cardiac Muscle is the second type of muscle found in the human body, and you guessed it, you can find cardiac muscle in the heart! Cardiac muscles are responsible for pumping blood throughought the human body. And these muscles…
- 644 Words
- 3 Pages
Good Essays -
5. Marieb, E.N. (2009). Essential of Human anatomy and physiology. (9th ed.) San Francisco: Pearson/Benjamin Cummings.…
- 1751 Words
- 8 Pages
Powerful Essays -
The epaxial muscle mass loses its segmental character to form the extensor muscles of the neck and trunk of mammals. In fishes, salamanders, caecilians, and reptiles, the body musculature remains segmented as in the embryo, though it often becomes folded and overlapping, with epaxial and hypaxial masses divided into several distinct muscle groups.…
- 1063 Words
- 5 Pages
Good Essays -
It is known that a human’s muscles grow from the very moment they are born, all the way up until about 30 years old. However, once this age has been reached, the muscles will not remain this way. Instead, they will begin degrading, and, within every decade succeeding this, the person may lose between 3-5% of their muscle mass. This is known as a disease called Sarcopenia, and, while mostly affecting those inactive, can also affect active people. It is a worldwide epidemic, which, in 2010, affected numbers greater than 40 million, and is expected to rise to 55 million by 2020.…
- 1104 Words
- 5 Pages
Good Essays -
These fetal pigs are removed from the uterus and are then transported to our laboratory for proper preservation and injections.…
- 668 Words
- 3 Pages
Satisfactory Essays